Fractures of the<unk><unk>  are caused by a varus (inwardly angulating) or valgus (outwardly angulating) force combined with axial loading or weight bearing on knee. The classically described situation in which this occurs is from a car striking a pedestrian's fixed knee ("bumper fracture"). However, most of these fractures occur from motor vehicle accidents or falls. Injury can be due to a fall from height in which knee forced into valgus or varus. The<unk>  condyle is crushed or split by the opposing femoral condyle, which remains intact. The knee anatomy provides insight into predicting why certain fracture patterns occur more often than others. The medial<unk>  is larger and significantly stronger than the lateral<unk> . Also, there is a natural valgus or outward angulation alignment to the limb which coupled with the often valgus or outwardly angulating force on impact will injure the lateral side. This explains how 60% of<unk>  fractures involve the lateral<unk> , 15% medial<unk> , 25% bicondylar lesions. Partial or complete ligamentous ruptures occur in 15-45%, meniscal lesions in about 5-37% of all<unk> s.
Tibial plateau fracture
Patella fracture
Humerus fracture
Anterior cruciate ligament injury
Trimalleolar fracture
Crus fracture
Jefferson fracture
Elbow fracture