Effects of lower-limb active resistance exercise on mobility, physical function, knee strength and pain intensity in patients with total knee arthroplasty: a systematic review and meta-analysis.

6 , the difference in extension range angle did not reach statistical significance ( P = 0.1, I 2 = 49%, MD -0.60, 95%CI -1.23–0.03, P = 0.06; Fig. 6 A), but the difference in flexion range angle did ( P = 0.22, I 2 = 26%, MD 2.74, 95%CI 1.82–3.67, P < 0.00001; Fig. 6 B).

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