Fig. 7
Pooled analysis of KSS between IPFP resection and IPFP preservation. Legend: Two studies reported KSS at 1 year; we found some statistical heterogeneity between the two groups (x2 = 4.49; df = 1, P = 0.04; I2 = 77%), and thus a random-effects model was used. The pooled results showed that patients in both groups experienced similar KSS (MD = − 0.48, 95% CI [− 3.76, 2.80], P = 0.77)