Table 1.

Preoperative and postoperative Pearson’s product moment correlation coefficients (r)

Dependent variable	Preoperative r	p Value	Postoperative r	p Value
Knee Society pain score	0.49	0.003	0.45	0.01
Involved lift-up index	−0.05	0.82	0.14	0.45
Uninvolved lift-up index	0.52	0.01	0.25	0.17
Range of motion	0.34	0.04	0.22	0.21