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. 2013 Oct;28(9 Suppl):176-8.
doi: 10.1016/j.arth.2013.07.036.

Unicompartmental knee arthroplasty enables near normal gait at higher speeds, unlike total knee arthroplasty

Anatole V Wiik  1 , Victoria Manning, Robin K Strachan, Andrew A Amis, Justin Peter Cobb
Affiliations

Unicompartmental knee arthroplasty enables near normal gait at higher speeds, unlike total knee arthroplasty

Anatole V Wiik et al. J Arthroplasty. 2013 Oct.

Abstract

Top walking speed (TWS) was used to compare UKA with TKA. Two groups of 23 patients, well matched for age, gender, height and weight and radiological severity were recruited based on high functional scores, more than twelve months post UKA or TKA. These were compared with 14 preop patients and 14 normal controls. Their gait was measured at increasing speeds on a treadmill instrumented with force plates. Both arthroplasty groups were significantly faster than the preop OA group. TKA patients walked substantially faster than any previously reported series of knee arthroplasties. UKA patients walked 10% faster than TKA, although not as fast as the normal controls. Stride length was 5% greater and stance time 7% shorter following UKA - both much closer to normal than TKA. Unlike TKA, UKA enables a near normal gait one year after surgery.

Keywords: gait; stride length; total knee arthroplasty; unicompartmental knee arthroplasty; walking speed.

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Figures

Fig
Fig
A graph of the mean Normalised Body Weight at Top Walking Speed, against the mean Normalised Stance Time for TKA (N = 21), UKA (N = 22), and the healthy control group (N = 14).
See this image and copyright information in PMC

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