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Patellar resurfacing versus retention in total knee arthroplasty

Version 2 2024-06-13, 17:45
Version 1 2022-06-14, 08:52
journal contribution
posted on 2024-06-13, 17:45 authored by JA Feller, R John Bartlett, DM Lang
We studied 40 patients in whom the patella was not severely deformed and who were undergoing primary total knee arthroplasty (TKA) for osteoarthritis by one surgeon using one type of prosthesis. They were randomly allocated either to have the patella retained or resurfaced with a cemented, all-polyethylene component regardless of the state of the patellar articular cartilage. Apart from removal of osteophytes, no surgery was undertaken on the retained patellae. All 38 surviving patients were evaluated at three years using the HSS knee score and a new, specifically designed Patellar score (maximum score of 30). No TKA was revised, but two patients in the resurfacing group had a further unrelated procedure. The mean HSS and Patellar scores at follow-up were 89 and 28 in the patellar retention group and 83 and 26 in the patellar resurfacing group. Statistically significant lower scores for both were recorded in women and in heavier patients. Stair-climbing ability was significantly better in the retention group. Although there were no complications related to patellar resurfacing, in the medium term we did not find any significant benefit from resurfacing the patella during TKA for osteoarthritis if it was not severely deformed.

History

Journal

Journal of Bone and Joint Surgery - Series B

Volume

78

Pagination

226-228

Location

England

ISSN

0301-620X

eISSN

2044-5377

Language

en

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

2

Publisher

British Editorial Society of Bone & Joint Surgery