Introduction
postoperative pain, RPD, PD, Patellar dislocation, patellar prolapse, trauma
Patellar dislocation (PD) refers to inwards patellar prolapse or outwards femoral trochlea.However, surgical trauma is increased for the “3‐in‐1” procedure in RPD. Meanwhile, the postoperative pain of RPD is acute, with visual analog scale (VAS) scores reaching 60 to 90 points.