Background: Studies on the clinical outcomes of derotational femoral osteotomy to treat
recurrent patellar dislocation in the presence of increased femoral anteversion are limited …

Trochlear dysplasia consists in deficient trochlear concavity, giving rise to a flat or convex
trochlea, and is the main risk factor for patellar dislocation. Surgical indications depend on …

Background: It has been speculated that the patellar J sign may have a negative effect on
the clinical outcomes of patients with recurrent patellar dislocation (RPD). Purpose: To (1) …

Purpose Classification systems are most valuable when they are reproducible and helpful in
guiding clinical management. Each author certifies that neither he or she, nor any member of …

Background: Increased femoral torsion (FT) or tibial torsion (TT) has been suggested to be a
potential risk factor for recurrent patellofemoral instability. However, the influence of …

Purpose The purpose of this study was to identify the causes of failure of previous medial
patellofemoral ligament reconstruction (MPFL-R), and to furthermore report the surgical …

Background Trochleoplasty is an effective patellar stabilization procedure; however, it is
associated with a risk of complications that cannot be ignored. Prior systematic reviews on …

Purpose The purposes of this study were to investigate the anatomical risk factors of grade 3
J-sign and analyse the influence of J-sign grades on the short-term clinical outcomes of …

Background: Previous research supports that distal translation of the tibial tubercle
osteotomy (dTTO) for patients with recurrent lateral patellar dislocation (R-LPD) and patella …

Abstract Purpose of Review The most common and biomechanically influential
pathoanatomic risk factor for recurrent patellofemoral instability is trochlear dysplasia …