Bone bruise

Bone bruises are fractures of the micro-architecture of the bone without a fracture of the hard outer layer of bone (cortex). They can occur following an injury to the knee and cause continued pain in the absence of any other finding. They are diagnosed by MR scanning

Bone bruises are self-limiting and require no treatment except limitation of activity. The condition generally resolves within 6 months but can last up to 2 years.