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Relevant bibliographies by topics / Radiographic wear

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Journal articles

Academic literature on the topic 'Radiographic wear'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Radiographic wear"

1

Derbyshire, Brian. "Correction of radiographic measurements of acetabular cup wear for variations in pelvis orientation." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 232, no. 3 (2018): 299–309. http://dx.doi.org/10.1177/0954411918754924.

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Radiographic measurement of two-dimensional acetabular cup wear is usually carried out on a series of follow-up radiographs of the patient’s pelvis. Since the orientation of the pelvis might not be consistent at every X-ray examination, the resulting change in view of the wear plane introduces error into the linear wear measurement. This effect is amplified on some designs of cup in which the centre of the socket is several millimetres below the centre of the cup or circular wire marker. This study describes the formulation of a mathematical method to correct radiographic wear measurements for changes in pelvis orientation. A mathematical simulation of changes in cup orientation and wear vectors caused by pelvic tilt was used to confirm that the formulae corrected the wear exactly if the radiographic plane of the reference radiograph was parallel to the true plane of wear. An error analysis showed that even when the true wear plane was not parallel to the reference radiographic plane, the formulae could still provide a useful correction. A published correction formula was found to be ineffective.

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2

Hall, R. M., P. Siney, P. S. Craig, A. Unsworth, and B. M. Wroblewski. "Discrepancy between penetration depths derived from radiographic and direct measurement of acetabular components." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 212, no. 1 (1998): 57–64. http://dx.doi.org/10.1243/0954411981533827.

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The most common technique for assessing penetration due to wear in acetabular components is with the aid of the most recent serial radiograph. This approach, which is often termed the uni-radiographic method, has been shown to underestimate the more reliable value of the penetration depth deduced from direct measurement of explanted sockets. In this article the causes of the discrepancies between the two data sets are explored. Ninety-six sockets were available from revision surgery for which both the penetration depth and angle could be measured using the shadowgraphic technique in both the coronal and wear planes. Further, the penetration depth for each of the sockets was also assessed from pre-revision X-rays. A significant discrepancy was observed between the penetration depths measured in the wear plane of the replica Δ P w and that measured from the radiograph, Δ Px-ray. The discrepancy was greatest for loose sockets as opposed to those that were still fixed at revision surgery. Using the corresponding data from the shadowgraph measurements, it was possible to deduce that the errors have arisen from the radiographic measurement of wear in the coronal plane and the formula used in calculating Δ Px-ray. If these errors (which cannot be calculated from the X-ray data alone) were taken into consideration, then the systematic bias between radiographic and shadowgraphic measurement was greatly reduced. The largest portion of the discrepancy was accounted for by wear occurring out of the plane of the radiograph, and this, in general, coincides with the coronal plane. Overall, these results indicate that the accurate measurement of wear from serial radiographs is not possible and that improved performance in terms of accuracy can only be achieved when a three-dimensional system is used. An alternative method for deducing the radio-graphic penetration depth is proposed which, theoretically, negates the error arising from the inaccuracy of the formula.

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3

Lavernia, Carlos J., Robert L. Barrack, Ruben A. Hernandez, and Rafael J. Sierra. "Poster #15 Radiographic wear in TKR." Journal of Arthroplasty 14, no. 2 (1999): 262. http://dx.doi.org/10.1016/s0883-5403(99)90189-4.

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4

Sanzén, Lennart, Arne Sahlström, Carl-Fredrik Gentz, and Inga Redlund Johnell. "Radiographic wear assessment in a total knee prosthesis." Journal of Arthroplasty 11, no. 6 (1996): 738–42. http://dx.doi.org/10.1016/s0883-5403(96)80014-3.

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5

Hall, Richard M. "Radiographic measurement of wear in total hip arthroplasty." Current Orthopaedics 12, no. 3 (1998): 202–8. http://dx.doi.org/10.1016/s0268-0890(98)90025-1.

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6

Ilchmann, T., U. Kesteris, and H. Wingstrand. "Effect of Pelvic Tilt on Radiographic Migration and Wear Measurements after Total Hip Arthroplasty." HIP International 8, no. 1 (1998): 16–23. http://dx.doi.org/10.1177/112070009800800102.

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Tilt effects on radiographic measurements after total hip arthroplasty should be studied. A new computerized method for measurement, called EBRA, making three-dimensional calculations and intended to identify tilted radiographs was evaluated for its clinical usefulness. In an experimental set-up repeated radiographs were taken with a human pelvis tilted gradually around its horizontal and vertical axes. Migration and wear were measured with the EBRA method and the results were compared with those made using standard methods. Tilted radiographs were identified and excluded from analysis by the EBRA method, significantly reducing the maximum error of measurement. A systematic error of measurement was found in the presence of consecutively changing tilt in a single direction. Wear measurements were only slightly affected by pelvic tilt. A pelvic tilt can cause considerable errors in the measurement of cup migration-i.e. up to 8.2 mm. The EBRA method improves the accuracy of measurements by taking the effects of tilt into account.

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7

Rahman, Luthfur, Justin Cobb, and Sarah Muirhead-Allwood. "Radiographic Methods of Wear Analysis in Total Hip Arthroplasty." Journal of the American Academy of Orthopaedic Surgeons 20, no. 12 (2012): 735–43. http://dx.doi.org/10.5435/00124635-201212000-00001.

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8

Rahman, Luthfur, Justin Cobb, and Sarah Muirhead-Allwood. "Radiographic Methods of Wear Analysis in Total Hip Arthroplasty." Journal of the American Academy of Orthopaedic Surgeons 20, no. 12 (2012): 735–43. http://dx.doi.org/10.5435/jaaos-20-12-735.

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9

Nagayoshi, Ikufumi, Hiroaki Tamura, and Mahiro Kawashima. "Radiographic Linear Wear Measurement of Inner Articulation in Bipolar Hemiarthroplasty." Orthopedics & Traumatology 49, no. 2 (2000): 368–72. http://dx.doi.org/10.5035/nishiseisai.49.368.

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10

Sychterz, Christi J., Anthony M. Yang, James P. McAuley, and Charles A. Engh. "Two-Dimensional Versus Three-Dimensional Radiographic Measurements of Polyethylene Wear." Clinical Orthopaedics and Related Research 365 (August 1999): 117–23. http://dx.doi.org/10.1097/00003086-199908000-00016.

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