If it is sure that it was the facture of the patella, it is important to be able to differentiate radiographically between a fracture of the patella where the fracture lines tends to be more oblique then the bipartite patella and even stress fracture of the patella-most patellar stress fractures are of the transverse type, occasionally occur lateral longitudinal fractures;if it was undispaced fracture with normal continuity of the extensor mechanism it managed conservatively, initially with an extensor splint. Fracture units in period of 6-8 weeks. When the fragments are dislocated, and where the extensor mechanism is not intact, require sugical treatment. This involves reduction of the patella and fixaton, usually with a tension band wire technique. The vastus muscle also needs to be repaired. The rehabilitation following this procedure is as for undisplaced fracture.

Best regards Nale