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Journal of Bone and Joint Surgery - British Volume, Vol 88-B, Issue 6, 734-739.
doi: 10.1302/0301-620X.88B6.16822  
Copyright © 2006 by British Editorial Society of Bone and Joint Surgery
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Patellar resurfacing in total knee replacement

A TEN-YEAR RANDOMISED PROSPECTIVE TRIAL

D. G. Campbell, BM, BS, PhD, FRACS, Orthopaedic Surgeon1; W. W. Duncan, MBBS, FRACS, Orthopaedic Surgeon1; M. Ashworth, FRCS, Orthopaedic Surgeon1; A. Mintz, MBBS, FRACS, Orthopaedic Surgeon1; J. Stirling, BASc, Physiotherapist1; L. Wakefield, BASc, MASs, Physiotherapist1; and T. M. Stevenson, FRCS, FRACS, Orthopaedic Surgeon1

1 The Queen Elizabeth Hospital, Woodville, Adelaide, South Australia.

Correspondence should be sent to Mr D. G. Campbell at Wakefield Orthopaedic Clinic, 270 Wakefield Street, Adelaide, SA 5000, Australia; e-mail: dcampbell{at}woc.com.au

A series of 100 consecutive osteoarthritic patients was randomised to undergo total knee replacement using a Miller-Galante II prosthesis, with or without a cemented polyethylene patellar component. Knee function was evaluated using the American Knee Society score, Western Ontario and McMaster University Osteoarthritis index, specific patellofemoral-related questions and radiographic evaluation until the fourth post-operative year, then via questionnaire until ten years post-operatively. A ten-point difference in the American Knee Society score between the two groups was considered a significant change in knee performance, with {alpha} and ß levels of 0.05.

The mean age of the patients in the resurfaced group was 71 years (53 to 88) and in the non-resurfaced group was 73 years (54 to 86).

After ten years 22 patients had died, seven were suffering from dementia, three declined further participation and ten were lost to follow-up. Two patients in the non-resurfaced group subsequently had their patellae resurfaced. In the resurfaced group one patient had an arthroscopic lateral release. There was no significant difference between the two treatment groups: both had a similar deterioration of scores with time, and no further patellofemoral complications were observed in either group.

We are unable to recommend routine patellar resurfacing in osteoarthritic patients undergoing total knee replacement on the basis of our findings.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General