Patellar instability is a common pathology of the knee in pediatric patients. The management this condition can be challenge for orthopedic surgeon, and comprehensive understanding anatomy biomechanics structures around utmost importance formulating treatment plan. Predisposing factors related to: trochlear patellar morphological abnormalities, ligamentous stabilizers, limb geometries axial pla...

Traumatic patellar dislocation is an injury that can predispose an individual to recurrent instability, chronic pain, and loss of function. These injuries are usually associated with disruption of the medial patellofemoral ligament and often have osteochondral lesions present. We feel that restoration of the normal anatomy will provide the best chance for return to full function. Therefore, in ...

PURPOSE Recurrent patellar dislocation is often associated with genu valgum. The purpose of this study was to analyze the short-term results of single-incision, closing-wedge distal femoral osteotomy (CWDFO) combined with medial reefing and lateral release for recurrent patellar instability with genu valgum. MATERIALS AND METHODS Combined CWDFO/medial reefing/lateral release was performed on ...

The patella is a motorical important part of the feline stifle joint. By gliding proximally and distally inside trochlear groove, its position continually changes during each step mobility. Stifle diseases like patellar luxation, cruciate ligament rupture, or tendon disease as well consecutive surgical interventions may cause dislocation.

OBJECTIVE The aim of this study was to compare the surgical results from reconstruction of the medial patellofemoral ligament (MPFL) with non-operative treatment of primary patellar dislocation. METHODS Thirty-nine patients (41 knees) with patellar dislocation were randomized into two groups. One group was treated conservatively (immobilization and physiotherapy) and other was treated surgica...

Between 1999 and 2001 thirty knees underwent a semitendinosus tendon plasty to recreate the medial patellofemoral ligament for recurrent patellar dislocation. The mean follow-up was 38 months. The mean improvement of the patellofemoral congruence angle after surgery was 14 +/- 7 degrees. All patients ended up with a full range of motion, except one patient, whose flexion was limited to 120 degr...

BACKGROUND The effectiveness of thermal shrinkage on the medial parapatellar capsule for treating recurrent patellar dislocation is controversial. One of reasons why it is still controversial is that the effectiveness is still qualitatively measured. The purpose of this study was to quantitatively determine the immediate effectiveness of the medial parapatellar capsule shrinkage as in clinical ...

Small patella syndrome (SPS) is characterized by aplasia or hypoplasia of the patella and pelvic girdle abnormalities, including bilateral absence or delayed ossification of the ischiopubic junction and infra-acetabular axe-cut notches. Here, we report a case of SPS in a 26-year-old female. Magnetic resonance image (MRI) showed a small patella with thick eccentric non-ossified patellar cartilag...

medialis obliquus, is the main passive stabilizer of the patellofemoral joint. Recently, it has been shown that the medial patellofemoral complex is the main pathoanatomy after patellar dislocation [1-3] . In addition, biomechanical studies have demonstrated that the MPFL is the main restraint against lateral patellar displacement and that repair or reconstruction of the MPFL restores normal pa...

INTRODUCTION Anterior cruciate ligament ruptures are frequent, especially in sports. Surgical reconstruction with autologous grafts is widely employed in the international literature. Controversies remain with respect to technique variations as continuous research for improvement takes place. One of these variations is the anatomical double bundle technique, which is performed instead of the co...