We compared the early results of mobile-bearing knee prosthesis with fixed-bearing knee prosthesis in 16 patients who had one-stage, sequential, bilateral replacements. In each patient, a Low Contact Stress (LCS, Depuy) rotating-platform prosthesis was inserted in one side, and an Anatomic Modular Knee (AMK, Depuy) posterior-stabilised prosthesis was inserted in the other side. The same surgica...

The PFC Sigma total knee was introduced in 1997, incorporating a number of design changes. We report the mid-term results of a consecutive series of PFC Sigma knee arthroplasties performed between November 1997 and December 1998. Out of a total of 156 patients (166 knees), 5 patients (5 knees) were lost to follow-up and 6 patients (6 knees) died of unrelated causes. This left 145 patients (155 ...

Background: The Oxford Knee Score (OKS) is a short patient-reported outcome instrument that measures pain and physical activity related to knee osteoarthritis. The purpose of this study is to evaluate, construct validity and consistent reliability of the Persian version of the OKS.Methods: The case series consisted of 80 patients who were clinically diagnosed with having knee osteoarthritis. Al...

BACKGROUND The aim of the study was to evaluate the safety and efficacy of a novel metal-free ceramic total knee replacement system. METHODS Thirty-eight primary total knee arthroplasties (TKAs) were performed on 34 patients using the metal-free BPK-S ceramic total knee replacement system with both the femoral and tibial components of an alumina/zirconia ceramic composite. The clinical outcom...

AIMS Approved by the Food and Drug Administration in 2004, the Phase III Oxford Medial Partial Knee is used to treat anteromedial osteoarthritis (AMOA) in patients with an intact anterior cruciate ligament. This unicompartmental knee arthroplasty (UKA) is relatively new in the United States, and therefore long-term American results are lacking. PATIENTS AND METHODS This is a single surgeon, r...

We previously compared the component alignment in total knee replacement using a computer-navigated technique with a conventional jig-based method. We randomly allocated 71 patients to undergo either computer-navigated or conventional replacement. An improved alignment was seen in the computer-navigated group. The patients were then followed up post-operatively for two years, using the Knee Soc...

BACKGROUND Total knee arthroplasty (TKA) designs continue to be modified to optimize patient's outcome. This study was designed to compare clinical and radiological results of classic worldwide used TKA posterior-stabilized (PS) design to those of its recent evolution. METHODS A consecutive group of 100 patients undergoing TKA using a classic cemented fixed-bearing PS TKA system was matched b...

BACKGROUND AND PURPOSE There is disagreement in the literature about the importance of patellofemoral joint degeneration and knee pain for the outcome of unicompartmental knee arthroplasty (UKA). We therefore investigated the importance of selected predictors including patellofemoral joint degeneration and the location of preoperative knee pain for the early outcome of UKA. PATIENTS AND METHO...

This study investigates the difference between the ability to kneel in patients after unilateral and bilateral total knee replacement. We used the Oxford knee questionnaire to assess knee function, and an additional question was introduced to identify the reasons for any difficulty or inability to kneel. Responses were received from 424 patients representing an 88.9% response rate. There was a ...

background: the oxford knee score (oks) is a short patient-reported outcome instrument that measures pain and physical activity related to knee osteoarthritis. the purpose of this study is to evaluate, construct validity and consistent reliability of the persian version of the oks. methods: the case series consisted of 80 patients who were clinically diagnosed with having knee osteoarthritis. a...