Knee Surg Relat Res.  2015 Dec;27(4):240-246. 10.5792/ksrr.2015.27.4.240.

Is Single-Radius Design Better for Quadriceps Recovery in Total Knee Arthroplasty?

Affiliations
  • 1Department of Orthopaedic Surgery, Center for Joint Diseases and Rheumatism, Kyung Hee University Hospital at Gangdong, Seoul, Korea. drkim@khu.ac.kr
  • 2Department of Orthopaedic Surgery, Kyung Hee University Hospital, Seoul, Korea.

Abstract

PURPOSE
Although single-radius (SR) designs have a theoretical advantage in quadriceps recovery following total knee arthroplasty (TKA), there has been a paucity of objective evaluation studies.
MATERIALS AND METHODS
One hundred and twenty minimally invasive TKAs were prospectively randomized by a single surgeon into 2 groups: SR design TKA group and multi-radius design TKA group. Quadriceps force and power were assessed using a dynamometer, and clinical data were investigated preoperatively and 6 weeks, 3 months, 6 months and 1 year postoperatively.
RESULTS
There were no differences between two groups in quadriceps recovery and clinical results throughout the follow-up period. Furthermore, the proportion of patients whose postoperative quadriceps force and power reached preoperative level was similar in both groups.
CONCLUSIONS
Femoral component design itself would not significantly influence quadriceps recovery after TKA.

Keyword

Knee; Arthroplasty; Prosthesis design; Quadriceps muscle; Muscle strength dynamometer

MeSH Terms

Arthroplasty*
Follow-Up Studies
Humans
Knee*
Muscle Strength Dynamometer
Prospective Studies
Prosthesis Design
Quadriceps Muscle
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