Benign
Giant cell tumour
Osteochondroma
Osteoid osteoma
Enchondroma
ABC
UBC
Malignant
Osteosarcoma - young age, calcaneum
Chondrosarcoma - middle age, slow growing
Ewing's - metatarsal
Metastatic Tumours - <1% all bony metastases, often lung
Giant cell tumour
Painful swollen foot / ankle
Lytic area on X-ray
Calcaneus > talus
Curettage and bone grafting
www.boneschool.com/giant-cell-tumour
Osteochondromas
Can occur in foot and ankle
Solitary osteochondroma
Multiple hereditary exostosis
www.boneschool.com/solitary-osteochondroma
www.boneschool.com/multiple-hereditary-exostosis
Osteoid osteoma
Especially common in hindfoot
Difficult to diagnose on x-ray - CT / MRI / bone scan
CT guided RF ablation
www.boneschool.com/osteoid-osteoma
Enchondroma
Single or multiple
www.boneschool.com/enchondroma
Aneurysmal bone Cyst
Metatarsal metaphysis most common site, followed by calcaneum
Treat with curettage and BG
Can excise an expendable bone like the metatarsal
www.boneschool.com/aneurysmal-bone-cyst
Unicameral Bone Cyst
Infrequent in foot
Calcaneum
Treat with curettage and bone graft
www.boneschool.com/unicameral-bone-cyst