Fibrous Dysplasia, Fibrosarcoma
Osteoblastoma/ Osteoid Osteoma / Osteosarcoma
Giant Cell Tumour
Malignancy / Mets / Myeloma
Primary
- Ewing's, Osteosarcoma, Chondrosarcoma
- Myeloma
Secondary
- Metastasis
- leukaemia, lymphoma
Terminal branch of the posterior cord
- lateral to radial nerve
- behind axillary artery
- runs over inferolateral border of SSC
- enters quadrangular space
Quadrangular space
- SSC superiorly anterior
- T major inferior
- T minor superiorly posterior
- long head triceps and humerus
Divides into anterior and posterior branches
Fracture talus through articular cartilage into subchondral bone
- 2° force transmitted from distal tibia
Osteochondritis dissecans v osteochondral fracture
6% ankle sprains
Average age = 25
M > F