Non-specific knee pain, patella dislocation previously.
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NECT scans shows a double-layered patella with secondary degenerative changes.
Double-layered patella (DLP) is a rare form of bipartite patella, it is a congenital anomaly which presents as a multiple fragmented patella with smooth, well-corticated borders. Double-layered patella is pathognomonic for multiple epiphyseal dysplasia.