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Journal articles on the topic 'Infraspinatus Tear'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Mihata, Teruhisa, Rei Morikura, Akihiko Hasegawa, et al. "Partial-Thickness Rotator Cuff Tear by Itself Does Not Cause Shoulder Pain or Muscle Weakness in Baseball Players." American Journal of Sports Medicine 47, no. 14 (2019): 3476–82. http://dx.doi.org/10.1177/0363546519878141.

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Background: Partial-thickness rotator cuff tears are common shoulder injuries in baseball players. For some tears, the symptoms can be relieved through physical therapy or debridement without rotator cuff repair. Purpose: To assess whether partial-thickness rotator cuff tear by itself causes shoulder pain and muscle weakness in baseball players. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We studied 87 university baseball players (age, 19.5 ± 0.8 years; baseball career, 11.5 ± 1.6 years). All data were obtained during a full-participation annual medical check in 1 team.

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Andarawis-Puri, Nelly, Eric T. Ricchetti, and Louis J. Soslowsky. "Interaction between the Supraspinatus and Infraspinatus Tendons: Effect of Anterior Supraspinatus Tendon Full-Thickness Tears on Infraspinatus Tendon Strain." American Journal of Sports Medicine 37, no. 9 (2009): 1831–39. http://dx.doi.org/10.1177/0363546509334222.

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Background Rotator cuff tears are common and not well-understood shoulder problems. Structural and mechanical inhomogeneity of the supraspinatus tendon complicates accurate prediction of risk of tear propagation and may affect appropriate clinical treatment. Hypothesis We propose that interactions between the supraspinatus and infraspinatus tendons are critical to load bearing at the glenohumeral joint and warrant investigation. Study Design Controlled laboratory study. Methods Principal strains in the infraspinatus tendon of cadaveric human shoulders were evaluated with increasing anterior fu

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Mihata, Teruhisa, Rei Morikura, Kunimoto Fukunishi, et al. "Partial-thickness Rotator Cuff Tear Itself Did Not Cause Shoulder Pain Or Muscle Weakness In Baseball Players." Orthopaedic Journal of Sports Medicine 7, no. 7_suppl5 (2019): 2325967119S0043. http://dx.doi.org/10.1177/2325967119s00430.

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Objectives: Rotator cuff tears are common shoulder injuries in baseball players. In some severe tears (i.e. through more than 50% of the cuff’s thickness), conservative treatment does not work well, and surgical treatment is sometimes chosen in an effort to ensure return to play. In contrast, some partial thickness rotator cuff tears do not cause shoulder symptoms, even during throwing motion. The objective of this study was to assess whether partial thickness rotator cuff tears cause shoulder pain and muscle weakness in baseball players. Methods: We studied 87 university baseball players (age

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Davis, Derik L., Mohit N. Gilotra, James Paul Hovis, Ranyah Almardawi, and S. Ashfaq Hasan. "Association of Rotator Cuff Tear Patterns and Intramuscular Fatty Infiltration on Magnetic Resonance Imaging." Journal of Clinical Imaging Science 9 (August 2, 2019): 38. http://dx.doi.org/10.25259/jcis_36_2019.

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Objective: The impact of rotator cuff (RC) tear pattern on intramuscular fatty infiltration (FI) is not well understood. The purpose of our study is to determine if differing RC tear patterns are associated with discordant presentations of intramuscular FI. Methods: Fifty-one adults with full-thickness tear of the posterosuperior RC on shoulder magnetic resonance imaging (MRI) were identified retrospectively. The study subjects were stratified by RC tear pattern: (1) L-shaped tear cohort, (2) crescent-/U-shaped tear cohort, and (3) complete tear cohort. Clinical information pertaining to age,

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Van Kleunen, Jonathan P., Scott A. Tucker, Larry D. Field, and Felix H. Savoie. "Return to High-Level Throwing After Combination Infraspinatus Repair, SLAP Repair, and Release of Glenohumeral Internal Rotation Deficit." American Journal of Sports Medicine 40, no. 11 (2012): 2536–41. http://dx.doi.org/10.1177/0363546512459481.

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Background: The overhead-throwing athlete is a unique patient, requiring an elite, precise functional ability. Superior labral tears are quite common, and the percentage of athletes who return to play after superior labrum anterior-posterior (SLAP) repair has been variable. A tear of the infraspinatus caused by either internal impingement or tension overload may compromise this return. Hypothesis: The rate of return to a level of play similar to or greater than the preinjury level after repair of combined SLAP and infraspinatus injuries will be lower than in previous reports of SLAP repair alo

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Basha, Mulla Saddar, and N. V. Naga Dharani. "A full thickness and partial rotator cuff tear with retraction of fibers and reconstruction with palmaris longus graft." Indian Journal of Case Reports 10, no. 11 (2024): 336–38. http://dx.doi.org/10.32677/ijcr.v10i11.4748.

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The report mainly appraises full-thickness tears at myotendinous junctions which are rare and only described in the supraspinatus and infraspinatus muscles. There is very little literature describing both tears occurring concurrently. After suffering mechanical damage to her shoulder, a 64-year-old woman was examined for pain in the shoulder on movement; the patient underwent radiographic and clinical evaluation which revealed full-thickness rotator cuff tears with retraction of fibers. Hence, the plan of care is to offer the best surgical techniques to guarantee a good result and a quick reco

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Karki, Subindra, Ram Chandra Paudel, Arun Phuyal, and Mohit Raj Dahal. "MRI IN THE EVALUATION OF ROTATOR CUFF TENDONS IN CHRONIC SHOULDER PAIN." Journal of Chitwan Medical College 11, no. 4 (2022): 103–6. http://dx.doi.org/10.54530/jcmc.549.

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Background: Shoulder pain is the third most common cause of non- traumatic musculoskeletal pain with rotator cuff pathology being the most common cause. Magnetic Resonance Imaging (MRI) is the imaging modality of choice which helps in accurate diagnosis for making a treatment plan as wrong treatment strategy may lead to poor prognosis. Methods: A descriptive prospective study conducted in 100 individuals with non-traumatic chronic shoulder pain referred to referred to Department of Radiodiagnosis and Imaging, Dhulikhel Hospital, Kavre between 27th August 2020 to 29th August 2021. MRI images we

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Muto, Tomoyuki, Hiroaki Inui, Hiroki Ninomiya, Hiroshi Tanaka, and Katsuya Nobuhara. "Characteristics and Clinical Outcomes in Overhead Sports Athletes after Rotator Cuff Repair." Journal of Sports Medicine 2017 (2017): 1–5. http://dx.doi.org/10.1155/2017/5476293.

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Rotator cuff tears in young overhead sports athletes are rare. The pathomechanism causing rotator cuff tears in young overhead athletes is different from that in aged patients. The purpose of this study was to investigate rotator cuff tear characteristics in young overhead sports athletes to reveal the pathomechanism causing these injuries. This study included 25 overhead sports athletes less than 30 years old with atraumatic rotator cuff tears necessitating repair. Rotator cuff tear characteristics were evaluated intraoperatively, including rotator cuff tear shape and injured rotator cuff ten

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Kim, Eun Yeol, Byung Yoon Park, and In Bo Kim. "Preoperative Korean Shoulder Scoring System Correlates with Preoperative Factors of Rotator Cuff Tears." Clinics in Shoulder and Elbow 21, no. 1 (2018): 30–36. http://dx.doi.org/10.5397/cise.2018.21.1.30.

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BACKGROUND: The Korean Shoulder Scoring System (KSS) is a reliable and valid procedure for discriminative assessment of the clinical status of patients with rotator cuff tears. This study evaluates the correlation between the preoperative KSS and factors in patients with rotator cuff tears.METHODS: From November 2009 to June 2016, 970 patients who underwent arthroscopic rotator cuff repair were retrospectively evaluated. A total of 490 patients met the study criteria. Preoperative factors included age, sex, symptom duration, mediolateral (ML) and anteroposterior (AP) tear size, acromiohumeral

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Murphy, Myles, and Jonathon Charlesworth. "A Partial Tear of the Infraspinatus Muscle." Journal of Orthopaedic & Sports Physical Therapy 46, no. 12 (2016): 1087. http://dx.doi.org/10.2519/jospt.2016.0421.

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Barragan Echenique, Diego M., Martine T. Dolan, Jason L. Koh, Benjamin A. Goldberg, and Farid Amirouche. "Infraspinatus Muscle Fiber Moment Arms During Abduction: A Biomechanical Comparison of Values for Intact Rotator Cuff, Supraspinatus Tear, Superior Capsular Reconstruction, and Reverse Total Shoulder Arthroplasty." Orthopaedic Journal of Sports Medicine 10, no. 5 (2022): 232596712210983. http://dx.doi.org/10.1177/23259671221098378.

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Background: Lines of action of the superior, middle, and inferior infraspinatus muscle fibers work together to produce moment arms that change throughout abduction in an intact shoulder, after a supraspinatus tear, and after superior capsular reconstruction (SCR) and reverse total shoulder arthroplasty (rTSA). Purpose: To use moment arm values to indicate the efficacy of SCR and rTSA to restore infraspinatus function during shoulder abduction. Study Design: Descriptive laboratory study. Methods: A total of 5 human cadaveric shoulders placed in a testing apparatus were each actively abducted (0

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Zilber, Sébastien, Yannick Carillon, Peter C. Lapner, Gilles Walch, and Laurent Nové-Josserand. "Infraspinatus Delamination Does Not Affect Supraspinatus Tear Repair." Clinical Orthopaedics and Related Research 458 (May 2007): 63–69. http://dx.doi.org/10.1097/blo.0b013e31803b8da7.

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Page, Richard S., Gaurav Gupta, and Saseendar Shanmugasundaram. "The HALP – An unusual triad in shoulder instability." Journal of Arthroscopic Surgery and Sports Medicine 1 (October 14, 2020): 226–29. http://dx.doi.org/10.25259/jassm_2_2020.

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Humeral avulsion of the glenohumeral ligament (HAGL) and posterior labral tears are less common injuries in comparison to Bankart lesion in traumatic shoulder instability. The association of rotator cuff tears with posterior capsulolabral lesions is even rarer. We present an unreported combination of HAGL with posterior labral tear and partial articular infraspinatus tendon avulsion (PAITA). This combination of shoulder injuries (HALP triad – HAGL + posterior labral tear + PAITA) has not been reported so far in English literature. The mechanism of this rare combination of injuries is discussed

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Nair, Nandu M. S., Banarji B H, Kamal Jain, and Aditya Reddy. "Glenoid Paralabral Cysts Causing Shoulder Pain and Isolated Infraspinatus Weakness: Early Arthroscopic Decompression and Labral Repair Leads to Complete Recovery: A Case Series." Journal of Orthopaedic Case Reports 15, no. 3 (2025): 189–93. https://doi.org/10.13107/jocr.2025.v15.i03.5384.

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Introduction: Shoulder pain in young patients can be caused by various conditions such as tendinitis, bursitis, capsulitis, and labral tears. Superior labrum anterior to posterior (SLAP) tears can sometimes be associated with a paralabral cyst, which can compress the suprascapular nerve and cause isolated weakness of the infraspinatus muscle and present as shoulder pain. A detailed examination and proper investigation can help in early diagnosis of such cases. Arthroscopic decompression and SLAP repair lead to complete recovery and excellent outcomes in such patients. Cases Report: We had four

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Malavolta, Eduardo Angeli, Verônica Yulin Prieto Chang, Marcello TraballiBozzi Pinto de Castro, et al. "EFFECT OF SUBSCAPULARIS TEARS ON FUNCTIONAL SCORES OF PATIENTS UNDERGOING ROTATOR CUFF REPAIR." Acta Ortopédica Brasileira 27, no. 2 (2019): 116–19. http://dx.doi.org/10.1590/1413-785220192702214524.

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ABSTRACT Objective: To evaluate the influence of partial- and full-thickness upper third subscapularis tendon tears on the functional scores of patients undergoing arthroscopic rotator cuff repair. Methods: Patients who underwent arthroscopic rotator cuff repair were divided into three groups according to the subscapularis tendon condition: intact, partial-thickness tear, or full-thickness upper third tear. Functional scores were compared among groups. Second, the influence of biceps and infraspinatus tears on the scores was tested using multivariate regression analysis. Results: We evaluated

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Kolbe, Amy B., Mark S. Collins, and John W. Sperling. "Severe atrophy and fatty degeneration of the infraspinatus muscle due to isolated infraspinatus tendon tear." Skeletal Radiology 41, no. 1 (2011): 107–10. http://dx.doi.org/10.1007/s00256-011-1265-5.

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Jeong, Ho Yeon, Hwan Jin Kim, Yoon Sang Jeon, and Yong Girl Rhee. "Factors Predictive of Healing in Large Rotator Cuff Tears: Is It Possible to Predict Retear Preoperatively?" American Journal of Sports Medicine 46, no. 7 (2018): 1693–700. http://dx.doi.org/10.1177/0363546518762386.

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Background: Many studies have identified risk factors that cause retear after rotator cuff repair. However, it is still questionable whether retears can be predicted preoperatively. Purpose: To determine the risk factors related to retear after arthroscopic rotator cuff repair and to evaluate whether it is possible to predict the occurrence of retear preoperatively. Study Design: Case-control study; Level of evidence, 3. Methods: This study enrolled 112 patients who underwent arthroscopic rotator cuff repair with single-row technique for a large-sized tear, defined as a tear with a mediolatera

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Lim, W. S. R., D. T. T. Lie, S. M. Chou, H. M. E. Lie, and A. Yew. "THE USE OF AN INTERPOSITION POLYPROPYLENE MESH IN ROTATOR CUFF REPAIR: A BIOMECHANICAL STUDY." Orthopaedic Proceedings 105-B, SUPP_7 (2023): 39. http://dx.doi.org/10.1302/1358-992x.2023.7.039.

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This study aims to investigate the mechanical properties of a rotator cuff tear repaired with a polypropylene interposition graft in an ovine infraspinatus ex-vivo model.Twenty fresh shoulders from skeletally mature sheep were used in this study. A tear size of 20 mm from the tendon joint was created in the infraspinatus tendon to simulate a large tear in fifteen specimens. This was repaired with a polypropylene mesh used as an interposition graft between the ends of the tendon. Eight specimens were secured with mattress stitches while seven were secured to the remnant tendon on the greater tu

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Goutam, Satpathy, Kumar Panda Sambit, Patra Gopabandhu, Nayak Sidhartha, Dash Amlan, and Subramanian Aravind. "Role of Ultrasound in the Detection of Rotator-Cuff Syndrome: An Observational Study." International Journal of Pharmaceutical and Clinical Research 14, no. 6 (2022): 790–97. https://doi.org/10.5281/zenodo.13626654.

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The purpose of this study was to determine the accuracy of sonography in rotator cuff tears, clinical tests are used to determine rotator-cuff syndrome but are insufficient to predict the morphology and size of the rotator-cuff tear. A total of 50 patients with shoulder pain with rotator- cuff tear, as diagnosed by orthopods, were subjected to ultrasonography. Real-time ultrasonography was done for the acromioclavicular joint, biceps, infraspinatus, posterior labrum, subscapularis, supraspinatus, teres minor tendon, and the sub-acromial-subdeltoid bursa. The USG criteria indicative of rotator

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Nakagawa, Shigeto, Minoru Yoneda, Kenji Hayashida, Shigeyuki Wakitani, and Kenji Okamura. "Greater Tuberosity Notch: An Important Indicator of Articular-Side Partial Rotator Cuff Tears in the Shoulders of Throwing Athletes." American Journal of Sports Medicine 29, no. 6 (2001): 762–70. http://dx.doi.org/10.1177/03635465010290061501.

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We examined the location of rotator cuff tears, associated labral injuries, and notches on the greater tuberosity of the humeral head in shoulders of throwing athletes. Arthroscopic findings (rotator cuff tear, labral condition, and greater tuberosity notch) as well as other factors (duration of playing baseball, range of motion, and joint laxity) of 61 baseball players were retrospectively studied. The presence of a greater tuberosity notch was also evaluated for by plain radiographs. Forty patients had articular-side partial rotator cuff tears, most of which occurred in the interval between

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Lacheta, Lucca, Alex Brady, Samuel I. Rosenberg, et al. "Superior Capsule Reconstruction With a 3 mm–Thick Dermal Allograft Partially Restores Glenohumeral Stability in Massive Posterosuperior Rotator Cuff Deficiency: A Dynamic Robotic Shoulder Model." American Journal of Sports Medicine 49, no. 8 (2021): 2056–63. http://dx.doi.org/10.1177/03635465211013364.

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Background: Superior capsule reconstruction (SCR) has been shown to improve shoulder function and reduce pain in patients with isolated irreparable supraspinatus tendon tears. However, the effects of SCR on biomechanics in a shoulder with an extensive posterosuperior rotator cuff tear pattern remain unknown. Purpose/Hypothesis: The purpose was to (1) establish a dynamic robotic shoulder model, (2) assess the influence of rotator cuff tear patterns, and (3) assess the effects of SCR on superior humeral head translation after a posterosuperior rotator cuff tear. It was hypothesized that a poster

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Martin, Joshua, and Selorm Takyi. "MICRO-FRAGMENTED ADIPOSE TISSUE IN THE SUCCESSFUL TREATMENT OF RECURRENT ROTATOR CUFF TEARS IN AN INJURED WORKER." Biologic Orthopedics Journal 5, no. 1 (2023): e16-e19. http://dx.doi.org/10.22374/boj.v5i1.38.

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This is the case of a 42-year-old right-handed male truck cargo mechanic who suffered a rotator cuff (RTC) tear of his right shoulder after a slip and fall while at work. An MRI of the shoulder demonstrated supra-spinatus and infraspinatus tendon tears. After a trial of 4 months of nonoperative treatment, he underwent arthroscopic repair of his RTC. Postoperatively, he completed a course of physical therapy (PT) and a work conditioning program. Unfortunately, he had ongoing pain, limitations in range of motion (ROM), and functional limitations, which prevented him from returning to work. A rep

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Siow, Matthew Y., Brendon C. Mitchell, Michael Hachadorian, et al. "Association Between Rotator Cuff Tears and Superior Migration of the Humeral Head: An MRI-Based Anatomic Study." Orthopaedic Journal of Sports Medicine 9, no. 6 (2021): 232596712110098. http://dx.doi.org/10.1177/23259671211009846.

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Background: Superior humeral migration has been established as a component of rotator cuff disease, as it disrupts normal glenohumeral kinematics. Decreased acromiohumeral interval (AHI) as measured on radiographs has been used to indicate rotator cuff tendinopathy. Currently, the data are mixed regarding the specific rotator cuff pathology that contributes the most to humeral head migration. Purpose: To determine the relationship between severity of rotator cuff tears (RCTs) and AHI via a large sample of magnetic resonance imaging (MRI) shoulder examinations. Study Design: Cohort study; Level

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Frank, Rachel M., Eric J. Cotter, David Savin, Eamon Bernardoni, and Anthony A. Romeo. "Arthroscopic Intramuscular Side-to-Side Repair of an Isolated Infraspinatus Tear." Arthroscopy Techniques 6, no. 5 (2017): e1743-e1748. http://dx.doi.org/10.1016/j.eats.2017.06.052.

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Choi, Sungwook, Hyunchul Yang, Hyunseong Kang, and Gyeong Min Kim. "Treatment of Large and Massive Rotator Cuff Tears: Does Infraspinatus Muscle Tear Affect Repair Integrity?" Clinics in Shoulder and Elbow 22, no. 4 (2019): 203–9. http://dx.doi.org/10.5397/cise.2019.22.4.203.

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Background: Clinical outcomes and prognosis of large and massive rotator cuff tears are known to be unpredictable not only in degeneration of the rotator cuff, but also due to a high rate of retear.Methods: Totally, 81 patients who had undergone arthroscopic rotator cuff repair from May 2008 to February 2016 were evaluated in our study. Clinical and functional evaluations were performed with the Constant score and the University of California, Los Angeles (UCLA) score, as well as full physical examination of the shoulder. All patients were confirmed to have magnetic resonance imaging (MRI) of

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Alraddadi, Abdulrahman, Bader Aldebasi, Bander Alnufaie, et al. "The association between a rotator cuff tendon tear and a tear of the long head of the biceps tendon: Chart review study." PLOS ONE 19, no. 3 (2024): e0300265. http://dx.doi.org/10.1371/journal.pone.0300265.

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Rotator cuff (RC) and long head of the biceps tendon (LHBT) tears are common shoulder problems presented to the orthopedic clinic. The aim of this study was to assess the association between RC and LHBT tears among a Saudi population sample. A total of 243 patients who were diagnosed with shoulder pain due to RC or LHBT tear between 2016 and 2018 using a magnetic resonance imaging scan were included in this study. Females comprised 66% of the sample, and 59% (n = 143) of the shoulders were on the right side. The mean age of the patients was 58 ± 11 years, ranging from 23 to 88 years. A signifi

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Lansdown, Drew A., Cyrus Morrison, Musa Zaid, et al. "Pre-Operative Quantitative MRI-Based Rotator Cuff Muscle Fat Fractions Are Associated with Patient-Reported Outcomes Following Rotator Cuff Repair." Orthopaedic Journal of Sports Medicine 7, no. 7_suppl5 (2019): 2325967119S0027. http://dx.doi.org/10.1177/2325967119s00276.

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Objectives: Advanced fatty infiltration is correlated with poor outcomes after rotator cuff repair, and high-grade fatty infiltration is considered a contraindication for repair. The influence of lower levels of fatty infiltration on outcomes after rotator cuff repair remains unclear. Quantitative magnetic resonance (MR) imaging sequences, specifically IDEAL imaging (iterative decomposition of water and fat with echo asymmetry and least-squares estimation), has been recently applied to measuring fatty infiltration of the rotator cuff muscles. Our purpose was to evaluate the relationship betwee

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International, Journal of Medical Science and Innovative Research (IJMSIR). "Diagnostic Accuracy of Shoulder Ultrasound for Rotator Cuff Tear by Considering Shoulder Arthroscopy as Gold Standard." International Journal of Medical Science and Innovative Research (IJMSIR) 9, no. 5 (2024): 136–42. https://doi.org/10.5281/zenodo.15437168.

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<strong>Abstract</strong> Rotator cuff disease is the leading cause of shoulder pain, and ultrasonography is widely used due to its non-invasive, cost-effective nature, though arthroscopy is considered the gold standard for diagnosis. This study aimed to compare the diagnostic accuracy of high-resolution ultrasonography with arthroscopy for detecting rotator cuff tears. Fifty patients suspected of having rotator cuff tears underwent both ultrasonography and arthroscopy over a one-year period. The results showed that 57% of patients were female, 43% were male, and the most affected tendon was t

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Canders, Caleb P., Tyler C. Haertlein, and Chelsea E. Robinson. "Anterior shoulder dislocation and infraspinatus tear diagnosed on point-of-care ultrasound." Visual Journal of Emergency Medicine 21 (October 2020): 100835. http://dx.doi.org/10.1016/j.visj.2020.100835.

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Park, Jin Woo, Sung Hoon Moon, and Jun Hee Lee. "Comparison of Clinical and Anatomical Outcomes between Delaminated Rotator Cuff Tear and Single Layer Rotator Cuff Tear." Clinics in Shoulder and Elbow 21, no. 4 (2018): 207–12. http://dx.doi.org/10.5397/cise.2018.21.4.207.

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BACKGROUND: Delaminated rotator cuff tear is known to be a degenerative tear having a negative prognostic effect. This study undertook to compare the anatomical and clinical outcomes of delaminated tears and single layer tears.METHODS: Totally, 175 patients with medium to large rotator cuff tears enrolled for the study were divided into 2 groups, based on the tear pathology: single layer tear (group 1) and delaminated tear (group 2). Preoperatively, length of the remnant tendon, muscle atrophy of supraspinatus (SS), and fatty degeneration of SS and infraspinatus (IS) muscles were assessed on m

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Kim, Jung-Han, and Hyeong-Won Seo. "Relationship of Posterior Decentering of the Humeral Head with Tear Size and Fatty Degeneration in Rotator Cuff Tear." Clinics in Shoulder and Elbow 22, no. 3 (2019): 121–27. http://dx.doi.org/10.5397/cise.2019.22.3.121.

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Background: Posterior decentering is not an uncommon finding on rotator cuff tear patients’ shoulder magnetic resonance imaging. No previous study has reported on the relationship between posterior decentering and rotator cuff tear.Methods: We assessed patients’ rotator cuff tear humeral head positions based on humeral?scapular alignment (HSA). Subjects were classified into centering and decentering groups based on a <2 mm or >2 mm HSA value, respectively. Differences in rotator cuff tear size, degree of tear, and fatty degeneration between the two groups were evaluated.Results: One hund

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Seo, Su-Jung, Jae-Young Park, Hyoung-Jin Park, and Jung-Taek Hwang. "Protocatechuic acid impacts rotator cuff healing and reduces fatty degeneration in a chronic rotator cuff tear model in rats." Clinics in Shoulder and Elbow 25, no. 1 (2022): 5–14. http://dx.doi.org/10.5397/cise.2021.00395.

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Background: The purpose of this study was to verify the effect of protocatechuic acid (PCA) on tendon healing and fatty degeneration in a chronic rotator cuff model.Methods: Twenty-eight Sprague-Dawley male rats were randomly allocated into two groups: Saline+repair (SR) and PCA+repair (PR). The right shoulder was used for experimental interventions, and the left served as a control. PCA (30 mg/kg/day) was administered intraperitoneally at the site of infraspinatus tendon detachment in rats in the PR group, and the same volume of saline was administered to the same site in the SR group. The to

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Yoo, Jae Hyun, Sung Min Rhee, Ho Yong Shim, and Jae Sung Lee. "Acute Rotator Cuff Tears due to Low Voltage Electrical Injury: A Case Report." Clinics in Shoulder and Elbow 21, no. 2 (2018): 101–4. http://dx.doi.org/10.5397/cise.2018.21.2.101.

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Since shoulder have a higher proportion of muscle which would have low electrical resistance, there could be more electrical damage to the rotator cuff muscles. We present a patient with acute rotator cuff tear by sudden uncontrolled jerking contractions caused by an electrical shock. A case of 42-year-old man with acute rotator cuff tear due to electrical injury to the shoulder was presented. Magnetic resonance imaging showed a full thickness tear and an undulating appearance of the peripheral end of the torn supraspinatus and infraspinatus muscle, suggesting an acute complete rupture. By art

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Elgendy, M., D. Makki, C. White, and A. ElShafey. "ROTATOR CUFF TEAR IN FRACTURE SHOULDER DISLOCATION." Orthopaedic Proceedings 105-B, SUPP_18 (2023): 13. http://dx.doi.org/10.1302/1358-992x.2023.18.013.

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IntroductionWe aim to assess whether radiographic characteristics of the greater tuberosity fragment can predict rotator cuff tears inpatients with anterior shoulder dislocations combined with an isolated fracture of the greater tuberosity.MethodsA retrospective single-centre case series of 61 consecutive patients that presented with anterior shoulder dislocations combined with an isolated fracture of the greater tuberosity between January 2018 and July 2022. Inclusion criteria: patients with atraumatic anterior shoulder dislocation associated with an isolated fracture of the greater tuberosit

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Liu, Qian, Jun Qi, Weihong Zhu, et al. "The Effect of Pulling Angle on Rotator Cuff Mechanical Properties in a Canine In Vitro Model." Bioengineering 10, no. 5 (2023): 599. http://dx.doi.org/10.3390/bioengineering10050599.

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The objective of this study was to examine the effect of pulling angle on time-zero mechanical properties of intact infraspinatus tendon or infraspinatus tendon repaired with the modified Mason-Allen technique in a canine model in vitro. Thirty-six canine shoulder samples were used. Twenty intact samples were randomly allocated into functional pull (135°) and anatomic pull (70°) groups (n = 10 per group). The remaining sixteen infraspinatus tendons were transected from the insertion and repaired using the modified Mason-Allen technique before being randomly allocated into functional pull or an

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Song, Sinhye, Seul Ki Lee, and Jee-Young Kim. "Partial-Thickness Tear of Supraspinatus and Infraspinatus Tendon Revisited: Based on MR Findings." Journal of the Korean Society of Radiology 82, no. 6 (2021): 1366. http://dx.doi.org/10.3348/jksr.2021.0124.

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Higa, Takeya, Hideki Asato, Takanao Shimabukuro, and Fuminori Kanaya. "Infraspinatus Muscle Transfer for Massive Rotator Cuff Tear: A Report of Two Cases." Orthopedics & Traumatology 58, no. 2 (2009): 276–82. http://dx.doi.org/10.5035/nishiseisai.58.276.

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Ichinose, Tsuyoshi, Atsushi Yamamoto, Tsutomu Kobayashi, et al. "The compensatory hypertrophy of the infraspinatus muscle in rotator cuff tear model rats." Journal of Shoulder and Elbow Surgery 23, no. 5 (2014): 602. http://dx.doi.org/10.1016/j.jse.2014.01.028.

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Shetty, Siddharth M., Rajsankar N. R., and B. Jayaprakash Shetty. "GLENOID LABRAL CYST PRESENTING WITH SUPRASCAPULAR NERVE PALSY." Journal of Health and Allied Sciences NU 04, no. 03 (2014): 105–8. http://dx.doi.org/10.1055/s-0040-1703813.

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Abstract Introduction: Glenoid labral cyst in shoulder is an entity akin to meniscal cysts in knee. It usually manifests with features similar to impingement syndrome or rotator cuff weakness. Clinical Picture: A 42yr old male patient with complaints of left shoulder pain and restriction of movement for 2 months with muscle wasting in left supraspinatus and infraspinatus region. MRI left shoulder showed partial tear of supraspinatus tendon, glenoid labral cyst in closed proximity and causing compression to suprascapular nerve with atrophy of infraspinatus muscle. Treatment: Left shoulder diagn

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Jodoin, Zachary, Spencer Sims, Timothy Petsche, and Alex Lucas. "Paralabral Cysts with Associated Infraspinatus and Teres Minor Denervation: A Case Report." Journal of Orthopaedic Case Reports 14, no. 11 (2024): 40–44. http://dx.doi.org/10.13107/jocr.2024.v14.i11.4908.

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Introduction: The shoulder is one of the most intricate articulation complexes in the human body. Any insult to its equilibrium can cause joint instability, pain, and dysfunction. The complex bony projections of the scapula, lengthy nature of the nerves, and extensive mobility of the joint places nerves at risk for impingement; this can, especially, be seen when examining the axillary and suprascapular nerves. Another rare cause of nerve impingement is a paralabral cyst secondary to labral tearing. If a paralabral cyst expands into the limited space occupied by the nerves, this can result in n

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Saurabh, Patel1, Mehta Dishant, Rathi3 Nirav, and Patel Mitul. "Clinical Correlation between Rotator Cuff Tear with Acromion Angulation on MRI." International Journal of Current Pharmaceutical Review and Research 16, no. 01 (2024): 102–5. https://doi.org/10.5281/zenodo.10990838.

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AbstractBackground and Aim: Many individuals experiencing on-going shoulder discomfort due to impingement oftenundergo magnetic resonance imaging (MRI) to further assess their condition. No previous studies have provideddata on the downward angulation of the acromion in relation to CAL thickness, SAS narrowing and eventualRTC deterioration. In this study, we aimed to analyse the acromion angle in relation to RTC tears and establish arange of measurements for CAL thickness and SAS distance using MRI, providing valuable insights into theseparameters.Material and Methods: The study included patie

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Engelke, J., M. Loew, S. Sulzer, S. Lichtenberg, and M. Schnetzke. "Supraspinatus tear—a mechanical outlet impingement lesion?" Obere Extremität 16, no. 2 (2021): 108–13. http://dx.doi.org/10.1007/s11678-021-00628-x.

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Abstract Background The etiology of degenerative supraspinatus tendon (SSP) tear is still subject to discussion. Objectives Our objective was to correlate clinical, radiological, and intraoperative signs of mechanical outlet impingement in patients with degenerative SSP tears. Materials and methods This prospective study included 100 patients with degenerative SSP tears that required surgery. Preoperatively, clinical impingement signs and radiological parameters (critical shoulder angle [CSA], acromion type according to Bigliani, acromion index [AI]) were recorded. Intraoperatively, the extent

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Wieser, Karl, Florian Grubhofer, Anita Hasler, et al. "Muscle Degeneration Induced by Sequential Release and Denervation of the Rotator Cuff Tendon in Sheep." Orthopaedic Journal of Sports Medicine 9, no. 8 (2021): 232596712110253. http://dx.doi.org/10.1177/23259671211025302.

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Background: In a sheep rotator cuff model, tenotomy predominantly induces fatty infiltration, and denervation induces mostly muscle atrophy. In clinical practice, myotendinous retraction after tendon tear or lateralization after tendon repair tear may lead to traction injury of the nerve. Purpose/Hypothesis: To analyze whether an additional nerve lesion during rotator cuff repair leads to further degeneration of the rotator cuff muscle in the clinical setting. We hypothesized that neurectomy after tendon tear would increase atrophy as well as fatty infiltration and that muscle paralysis after

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Ok, Hyun Soo, Byung Guk Kim, Won Chul Choi, Chul Gie Hong, Jee Woong Kim, and Jae Hwa Kim. "Clinical Relevance of Classifying Massive Rotator Cuff Tears: Results Based on Functional and Radiological Findings After Arthroscopic Repair." American Journal of Sports Medicine 45, no. 1 (2016): 157–66. http://dx.doi.org/10.1177/0363546516667498.

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Background: Studies on the results of arthroscopic repair of massive rotator cuff tears have reported widely varied prognoses. Among other factors, the sizable discrepancy can be attributable to the fact that the current definition of massive rotator cuff tears covers an extensive area of tendons. Hypothesis: Functional and radiological results according to subgroups would show significant inter-subgroup differences preoperatively and postoperatively. Study Design: Cohort study; Level of evidence, 2. Methods: A total of 104 patients who required arthroscopic repair for massive rotator cuff tea

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Yamaguchi, Hiroshi, Naoki Suenaga, Naomi Oizumi, Yoshihiro Hosokawa, and Fuminori Kanaya. "Will Preoperative Atrophy and Fatty Degeneration of the Shoulder Muscles Improve after Rotator Cuff Repair in Patients with Massive Rotator Cuff Tears?" Advances in Orthopedics 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/195876.

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Recently, retear rate after repair for massive cuff tear have been improved through devised suture techniques. However, reported retear rate is relevant to preoperative atrophy and fatty degeneration. The purpose of this study was to investigate whether preoperative atrophy and fatty degeneration of rotator cuff muscles improve by successful repair. Twenty-four patients with massive rotator cuff tear were evaluated on the recovery of atrophy and fatty degeneration of supraspinatus and infraspinatus muscle after surgery. Atrophy was classified by the occupation ratio and fatty degeneration by m

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Song, Sinhye, Seul Ki Lee, and Jee-Young Kim. "Erratum: Partial-Thickness Tear of Supraspinatus and Infraspinatus Tendon Revisited: Based on MR Findings." Journal of the Korean Society of Radiology 83, no. 1 (2022): 252. http://dx.doi.org/10.3348/jksr.2022.0012.

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Sano, Hirotaka, Nobuyuki Yamamoto, Eiji Itoi, Shin Hitachi, and Akira Oizumi. "Cystic lesion within the infraspinatus muscle caused by a partial-thickness rotator cuff tear." Journal of Orthopaedic Science 18, no. 6 (2013): 1050–54. http://dx.doi.org/10.1007/s00776-012-0259-z.

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Matsuki, Keisuke, Hiroyuki Sugaya, Atsuya Watanabe, et al. "Infraspinatus Muscle Atrophy in Relation to Sagittal Extent of Rotator Cuff Tear (SS-38)." Arthroscopy: The Journal of Arthroscopic & Related Surgery 24, no. 6 (2008): e21. http://dx.doi.org/10.1016/j.arthro.2008.04.038.

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Brooks, Charles N., James R. Funk, J. Mark Melhorn, James B. Talmage, and Christopher R. Brigham. "Do Rear-End Motor Vehicle Collisions Cause Rotator Cuff Tears?" Guides Newsletter 19, no. 1 (2014): 3–7. http://dx.doi.org/10.1001/amaguidesnewsletters.2014.janfeb01.

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Abstract The rotator cuff comprises four muscles and their tendons, the supraspinatus, infraspinatus, teres minor, and subscapularis. Rotator cuff tears (RCTs) are common and most frequently involve the supraspinatus, and usually occur through tendon rather than muscle. Clinical manifestations vary depending on the size and age of the tear, the individual's physical demands, psychosocial factors, and other variables; tears may range from the asymptomatic to large, full-thickness, and retracted tears that cause pain, weakness, and at least partial disability. Individuals involved in rear-end mo

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Park, Maxwell C., Charles Lin, Adam Kantor, Yasuo Itami, Michelle H. McGarry, and Thay Q. Lee. "Anterior Cable Reconstruction Using the Proximal Biceps Tendon for Large Rotator Cuff Defects Limits Superior Migration and Subacromial Contact Without Restricting Range of Motion." Orthopaedic Journal of Sports Medicine 6, no. 7_suppl4 (2018): 2325967118S0016. http://dx.doi.org/10.1177/2325967118s00168.

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Objectives: Large rotator cuff defects involving the supraspinatus and infraspinatus tendons, either due to irreparability or after partial repair lack superior capsule support. Any remaining tendon is at risk for tear progression as the tendon must function as both a dynamic tendon and static ligamentous structure. Our purpose was to biomechanically assess an anterior cable reconstruction (ACR) using autologous biceps tendon. We hypothesized that ACR will normalize superior migration and subacromial contact, without limiting range of motion. Methods: Nine cadaveric shoulders were tested using

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