a slight trendP < 0.200
Factors including no previous surgery (OR: 0.659, 95% CI: 0.364 to 1.190, P = 0.169), longer lesion time (OR: 1.57, 95% CI: 0.810 to 3.050, P = 0.181), and Kellegren–Lawrence grade 2 or less (OR: 0.584, 95% CI: 0.328 to 1.040, P = 0.068) showed a slight trend towards statistical significance ( P < 0.200).