PATELLA BIPARTITA

Bipartite Patella

Osteophytes removal in patella versus lateral facetectomy of the patella in patella-retaining total knee arthroplasty

BACKGROUND In this study, the results of the partial lateral facetectomy of the patella to better patellofemoral motion and congruence are compared with the results of the osteophyte removal of the patella and neurectomy only in total knee arthroplasty (TKA). METHODS Data from 55 patients undergoing TKA with osteophytes removal of the patella and neurectomy only, and those undergoing osteophy...

Patella Dislocation with Vertical Axis Rotation: The “Dorsal Fin” Patella

A 44-year-old woman presented following minor trauma to her right knee. While dancing she externally rotated around a planted foot and felt sudden pain in her right knee. She presented with her knee locked in extension with a "dorsal fin" appearance of the soft tissues tented over the patella. This was diagnosed as a rare case of an intraarticular patella dislocation, which was rotated 90 degre...

Patella morphological alteration after patella instability in growing rabbits

BACKGROUND The shape of the patella has been considered to be a predisposing factor resulting in patellar instability, but the effects of abnormal patella position during its development are unclear. The present study evaluated patellar morphological changes after patella instability and evaluated the influence of patellar instability on the patella shape. METHODS Twenty rabbits that were 2 m...

Nail-Patella Syndrome

Nail-patella syndrome is an autosomal dominant disorder characterized by dyplasia of finger nails, skeletal anomalies, and, frequently, renal disease. It has recently been shown that this disorder is caused by putative loss-of-function mutations in a transcription factor (LMX1B) belonging to the LIMhomeodomain family, members of which are known to be important for pattern formation during devel...