Fig. 2From: Early patellofemoral articular cartilage degeneration in a rat model of patellar instability is associated with activation of the NF-κB signaling pathwayDetailed procedure of the operations: a, Cut off the medial soft tissue restraints (MPFL: medial patellofemoral ligament, MR: medial retinaculum); b, Postoperative PI (Patellar instability). Distal femoral groove can be noticed after the release of medial soft tissue restrainsBack to article page