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Peak Knee Flexion Angles During Stair Descent in TKA Patients

Bjerke, Joakim; Öhberg, Fredrik; Nilsson, Kjell G.; Foss, Olav; Stensdotter, Ann-Katrin
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URI
http://hdl.handle.net/11250/148684
Date
2013-08
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  • Institutt for nevromedisin og bevegelsesvitenskap [2260]
Original version
Bjerke J, et al, Peak Knee Flexion Angles During Stair Descent in TKA Patients, J Arthroplasty (2013)   10.1016/j.arth.2013.07.010
Abstract
Reduced peak knee flexion during stair descent (PKSD) is demonstrated in subjects with total knee arthroplasty (TKA), but the underlying factors are not well studied. 3D gait patterns during stair descent, peak passive knee flexion (PPKF), quadriceps strength, pain, proprioception, demographics, and anthropometrics were assessed in 23 unilateral TKA-subjects ~19months post-operatively, and in 23 controls. PKSD, PPKF and quadriceps strength were reduced in the TKA-side, but also in the contralateral side. A multiple regression analysis identified PPKF as the only predictor (57%) to explain the relationship with PKSD. PPKF was, however sufficient for normal PKSD. Deficits in quadriceps strength in TKA-group suggest that strength is also contributing to smaller PKSD. Increased hip adduction at PKSD may indicate both compensatory strategy and reduced hip strength.
Journal
Journal of Arthroplasty

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