Editorial Commentary: What Is the Optimal Management of First and Recurrent Patellar Instability? Patellofemoral Instability Management Continues to Evolve.

Abstract

Patellar instability patients may present for evaluation after their first instability episode or after recurrent episodes. Current management differs for these 2 groups. The accepted "common denominator" of patellar instability is the medial patellofemoral ligament, or medial patellar restraints, to be more all-encompassing. These patients often have multiple contributing comorbidities (e.g., trochlear dysplasia, patellar alta, excessive lateral position of tibial tubercle). Historically, the recommended treatment for a first-time patellar dislocation was nonoperative because medial soft tissue repairs had not been proven more effective. Indications for primary repair of the medial patellar restraints are a single discrete tear identified on magnetic resonance imaging. In the case of recurrent patellar instability, medial patellofemoral ligament reconstruction, rather than repair/reef, has been the recommended approach. The keys to reconstruction remain: honor the anatomy and avoid overconstraint of the patella. For first time dislocation patients with trochlear dysplasia, patellar alta, and age <25 years, recurrent instability is common.