Fig. 4From: Bearing dislocation of mobile bearing unicompartmental knee arthroplasty in East Asian countries: a systematic review with meta-analysisForest plot of bearing dislocation onset time. (Above) The dislocation rate was not significantly different before and after the first 2 years postoperatively (P > 0.05). (Below) The difference in the dislocation rate between the first 5 years and the later phase was statistically significant (P < 0.01)Back to article page