Authors: C Lüring M Kauper H Bäthis L Perlick J Beckmann J Grifka M Tingart B Rath
Publish Date: 2011/06/15
Volume: 36, Issue: 3, Pages: 553-558
Abstract
Computerassisted knee surgery has become established in routine clinical practice Still there is no study investigating midterm clinical outcome after five to seven years postoperatively We aimed to test the hypothesis that there is no difference either for subjective Western Ontario and McMaster Universities WOMAC scores or for objective Knee Society Score degree of flexion criteria between computerassisted total knee replacement TKR and freehand TKR after 56–73 yearsWe performed a matchedpair analysis 100 patients who received a primary TKR were investigated after a median followup of 625 years Group A was operated on with the support of a computer system while surgery on patients in group B was performed with the freehand technique We determined WOMAC Score Knee Society Score and degree of flexionOverall we found similar results for WOMAC Score group A 4298 SD 1380 group B 4154 SD 1501 p = 062 Knee Society Score group A 16820 SD 2194 group B 16660 SD 2144 p = 071 and range of motion group A 106° SD 919 group B 107° SD 744 p = 062
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