A vertical<unk>  with the fracture line marked by a black arrow Diagnosis is based on symptoms and confirmed with X-rays. In children an MRI may be required. Differential diagnosis Bipartite<unk>  Some people have a normal bipartite<unk>  or two-part<unk>  which can appear as a fracture. The fragment is usually seen in the top outer corner of the<unk>  and can be distinguished from a fracture by being present in both knees. Types The<unk>  can break in various ways depending on the way it is injured, and into two or more pieces. Types include transverse, with one fracture line and is the most common type, marginal, osteochondral and the rare vertical type, or stellate, where a direct compression force gives rise to a comminuted pattern.<unk> s can be further classified as displaced, where the broken ends of bone do not line up correctly and separate by more than 2mm, or undisplaced and stable where pieces of bone remain in contact with each other. If fragments of<unk>  bone stick out from the skin it is known as an open<unk> , and closed if the overlying skin is intact. File:Patellaquerfraktur seitlich.Transverse fracture of<unk>  File:ZP+B fraktura<unk>  (39).Comminuted fracture of<unk>  File:Patellafraktur laengs.Osteochondral fracture of<unk>  File:Patella fracture.Vertical<unk>
Patella fracture
Bipartite patella
Humerus fracture
Tibial plateau fracture
Elbow fracture
Patellar tendon rupture
Ankle fracture
Jefferson fracture