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. 2003 Aug;18(5):575-82.
doi: 10.1016/s0883-5403(03)00110-4.

Recovery of mobility after knee arthroplasty: expected rates and influencing factors

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Recovery of mobility after knee arthroplasty: expected rates and influencing factors

Sarah E Lamb et al. J Arthroplasty. 2003 Aug.

Abstract

Mobility was measured in 79 people 6 months after knee arthroplasty using timed tests of stair climbing and walking speed. Recovery rates were calculated in comparison with a preoperative assessment. Changes in leg extensor power, knee flexion range, and pain were tracked simultaneously. Stair climbing speed improved on average by 53% during the first 6 months, and walking speed by 45%. In multivariate models, 2 preoperative factors emerged as being influential on recovery of mobility: leg extensor power and body mass index. A marked loss of flexion in the postoperative period was not a significant determinant of mobility speed. At 6 months, body mass index was the most significant determinant of stair speed, and leg extensor power was the most significant determinant of walking speed.

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