A novel method for in vivo knee prosthesis wear measurement

A. Short, H. S. Gill, B. Marks, J. C. Waite, C. F. Kellett, A. J. Price, J. J. O'Connor, D. W. Murray

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Wear remains an important cause of failure in knee replacement. Of the current methods of early performance assessment or prediction, simulators have been un-physiological, single X-ray film analyses remain limited by accuracy and retrieval and survival methods have a prohibitive time scale. An accurate method is needed to allow a timely assessment of polyethylene component wear in vivo, when a new design is introduced, in order to predict likely outcome. We present a new method for measuring wear in vivo that we believe will allow this prediction of long-term wear. X-ray film pairs were taken of implanted prosthetic metal components. When the X-ray system was calibrated, projections of the appropriate Computer Aided Design (CAD) model could be matched to the shapes on the scanned X-ray films to find component positions. Interpenetration of the metal femoral component into the polyethylene component could then be established and represents our estimate of "wear". This method was used to measure in vivo prosthesis wear to an accuracy of 0.11 mm.
Original languageEnglish
Pages (from-to)315-322
Number of pages8
JournalJournal of Biomechanics
Volume38
Issue number2
DOIs
Publication statusPublished - 2005

Fingerprint

Knee prostheses
Knee Prosthesis
X-Ray Film
Wear of materials
X ray films
Polyethylene
Metals
Polyethylenes
Computer-Aided Design
Thigh
Prostheses and Implants
Prosthetics
Knee
X-Rays
Computer aided design
Simulators
X rays

Cite this

Short, A., Gill, H. S., Marks, B., Waite, J. C., Kellett, C. F., Price, A. J., ... Murray, D. W. (2005). A novel method for in vivo knee prosthesis wear measurement. Journal of Biomechanics, 38(2), 315-322. https://doi.org/10.1016/j.jbiomech.2004.02.023

A novel method for in vivo knee prosthesis wear measurement. / Short, A.; Gill, H. S.; Marks, B.; Waite, J. C.; Kellett, C. F.; Price, A. J.; O'Connor, J. J.; Murray, D. W.

In: Journal of Biomechanics, Vol. 38, No. 2, 2005, p. 315-322.

Research output: Contribution to journalArticle

Short, A, Gill, HS, Marks, B, Waite, JC, Kellett, CF, Price, AJ, O'Connor, JJ & Murray, DW 2005, 'A novel method for in vivo knee prosthesis wear measurement', Journal of Biomechanics, vol. 38, no. 2, pp. 315-322. https://doi.org/10.1016/j.jbiomech.2004.02.023
Short, A. ; Gill, H. S. ; Marks, B. ; Waite, J. C. ; Kellett, C. F. ; Price, A. J. ; O'Connor, J. J. ; Murray, D. W. / A novel method for in vivo knee prosthesis wear measurement. In: Journal of Biomechanics. 2005 ; Vol. 38, No. 2. pp. 315-322.
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