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Patellofemoral Function After Total Knee Arthroplasty

2011; Elsevier BV; Volume: 26; Issue: 8 Linguagem: Inglês

10.1016/j.arth.2011.01.016

1532-8406

Lorenzo Sensi, Roberto Buzzi, Francesco Giron, Lapo De Luca, Paolo Aglietti,

Orthopaedic implants and arthroplasty

Abstract The purpose of the study was to evaluate patellofemoral results in 2 comparable groups of 50 patients, men and women, undergoing total knee arthroplasty. The average follow-up was 6 years. The implant was posteriorly stabilized with a dome patellar arthroplasty. The patients were studied using Knee Society knee and functional scores and the Hospital for Special Surgery (HSS) patellar score. Radiologic study included standard and weight-bearing axial views and a computed tomographic scan to assess component rotation. The 2 groups achieved satisfactory and similar knee scores; women had a significantly lower functional and patellar scores. The incidence of lateral patellar tilt, subluxation, and lateral impingement was decreased in weight-bearing axial views compared with non–weight bearing. Medial bony impingement was evident only in weight-bearing views and correlated with pain ( P < .05).