In this case report, the surgical treatment of a calf with congenital, unilateral lateral patellar luxation clinical, radiography, and computed tomography findings is presented. A 5-day-old was referred due to an extremely flexed knee joint hindlimb weakness. Radiographic, tomographic, orthopedic examination demonstrated grade 3 normal stifle bone anatomy. Surgery includes release medial imbric...

Chondromalacia of the patella is frequently encountered in patients with anterior knee pain. Arthroscopic chondroplasty with perforation of subchondral bone remains a popular treatment alternative in spite of the inferior mechanical properties of the fibrocartilaginous tissue that this procedure is designed to promote. We report a case of cystic degeneration of the patella as a previously unrec...

Congenital patellar dislocation is a rare condition in which the patella is permanently dislocated and cannot be reduced manually. The patella develops normally as a sesamoid bone of the femur. This congenital dislocation results from failure of the internal rotation of the myotome that forms the femur, quadriceps muscle and extensor apparatus. It usually manifests immediately after birth, alth...

DISCUSSION In cases where the surgeon would prefer to resurface a defi cient patella because the option of retaining the host would lead to maltracking, we have found this technique to be reliable, versatile and cheap to overcome the otherwise complicated scenario of patella defi ciency. It avoids the risk of fracture by reducing the amount of bone that would otherwise be resected for a traditi...

BACKGROUND Medial opening wedge high tibial osteotomy (HTO) is a well-described treatment in early medial compartmental osteoarthritis of the knee. However, two undesirable sequelae may follow -patella baja and changes in the posterior tibial slope (TS). MATERIALS AND METHODS We conducted a retrospective study in patients who underwent HTO in our center between September 2009 and February 201...

BACKGROUND Patellofemoral complications are one of the main problems after Total Knee Arthroplasty (TKA). Retropatellar pressure distribution after TKA can contribute to these symptoms. Therefore we evaluated retropatellar pressure distribution subdivided on the ridge, medial and lateral surface on non-resurfaced patella before and after TKA. Additionally, we analyzed axial femorotibial rotatio...

Patella fractures account for 1% of all fractures but there is little in the contemporary literature regarding either an optimal standardized post-operative rehabilitation regimen or the long-term outcomes following these fractures. Tension band wire fixation for displaced patella fractures is a well-recognised and accepted method of operative treatment for these fractures. In this case the aut...

Patellar tendon ruptures can lead to significant functional deficiency of the extensor mechanism of the knee. These injuries, because of their inherent nature and associated complications, may require a complex treatment and remains a challenge for orthopaedic surgeons. Current surgical techniques present significant complications, including patellar fracture, damage to patellar articular carti...

OBJECTIVES Our study aimed to examine if a mobile-bearing total knee replacement (TKR) offered an advantage over fixed-bearing designs with respect to rates of secondary resurfacing of the patella in knees in which it was initially left unresurfaced. METHODS We examined the 11-year report of the New Zealand Joint Registry and identified all primary TKR designs that had been implanted in > 500...