Combined Lateral Patellofemoral Ligament and Lateral Patellotibial Ligament Reconstruction for Medial Patellar Instability

Abstract Medial patellar instability is an uncommon but debilitating condition that may arise following excessive lateral retinacular release. The lateral patellofemoral ligament and lateral patellotibial ligament function as key static stabilizers that resist medial patellar translation throughout knee flexion. This technical note describes a reproducible open technique for combined lateral patellofemoral ligament and lateral patellotibial ligament reconstruction using a single semitendinosus allograft to restore both proximal and distal lateral restraints. This technique provides anatomic reconstruction while minimizing the risk of residual instability.