"type I: at the inferior pole (5% of all lesions)"
"type II: at the lateral patellar margin (20%)"
"type III: at the superolateral pole (75%)"
"Segmentation of the patella occurs when the ossification centres fail to fuse in early childhood. The most common type of segmentation results in the separation of the upper outer quadrant, which is called a bipartite patella. Less commonly, there may be a third segment, resulting in a tripartite patella. A double-layered patella is a rare form of bipartite multipartite patella that presents with multiple fragmented patellae with smooth, well-corticated borders 8."
"Segmentation of the patella occurs when the ossification centres fail to fuse in early childhood. The most common type of segmentation results in the separation of the upper outer quadrant, which is called a bipartite patella. Less commonly, there may be a third segment, resulting in a tripartite patella. A double-layered patella is a rare form of bipartite multipartite patella that presents with multiple fragmented patellae with smooth, well-corticated borders 8."
Expected headings
"Associations"
"Related pathology"