Chronic Patellar Instability

Published results showed medial patellofemoral ligament reconstruction combined with thin flap trochleoplasty may yield low rates of redislocation and reoperation for patients with high-grade trochlear dysplasia and recurrent instability.

According to published results, patients with dysplasia with a trochlear bump and patella alta may be at increased risk for recurrent instability after medial patellofemoral ligament reconstruction.

According to published results, thick-shell sulcus-deepening trochleoplasty may yield clinical improvements and high satisfaction for skeletally immature patients with patellar instability and open distal femoral physes.

A 21-year-old man presented with bilateral knee recurrent patellar instability.

Published results showed de-rotational osteotomy with medial patellofemoral ligament reconstruction was associated with better outcomes vs. tibial tubercle transfer with MPFL reconstruction for patellar instability and torsion deformity.

BOSTON — In this video from the Arthroscopy Association of North America Annual Meeting, Miho J. Tanaka, MD, PhD, discussed radiographic positioning of the femoral tunnel in surgical candidates with patellar instability and dysplasia.

SAN FRANCISCO — Results presented here showed varus or valgus alignment may be a nonmodifiable risk factor for patellofemoral instability in pediatric and adolescent patients.

At the American Academy of Orthopaedic Surgeons Annual Meeting, a capacity audience enjoyed “Showdowns: Patellar instability,” an hour of lively but congenial and insightful expert debates on patellofemoral instability controversies.

Planning patella instability correction has improved greatly thanks to the Lyon “menu á la carte” and the Dejour classification of trochlea dysplasia.

According to published results, limb symmetry index for baseline single-leg hop for distance and triple hop for distance was significantly associated with persistent patellar instability at 1-year follow-up.