Li F, et al. - Via a case-control study of 43 consecutive patients with valgus deformity who underwent primary constrained condylar knee (CCK) TKA between July 2008 and October 2015, researchers contrasted the extent of intraoperative soft-tissue release between the patients with dislocation and those without. The hypothesis was that releasing both the lateral collateral ligament (LCL) and popliteus tendon (PT) together is correlated with the occurrence of dislocation following CCK TKA with valgus deformity. Postoperative dislocation of the knee was noted in 9.3% of the patients. While the dislocated patients did not significantly vary from the controls on most features, they were more prone to have both the LCL and PT released together during the surgery. Thus, in CCK TKA with valgus deformity, releasing both LCL and PT may raise the risk of dislocation, and require to be performed with some forewarning.