Introduction: Benign bone tumour arising from chondroblasts; usually present in the small bones of hands and feet and asymptomatic for long time; patient presents usually with a pathological fracture or sometimes pain.

Incidence: not uncommon; 25 % of all benign tumours, most common primary tumour in the hand

Differential Diagnosis: Aneurysmal bone cyst, Tubercular dactylitis, Giant cell tumour, clear cell chondrosarcoma & acrometastases. The latter two are extremely rare.

Prevention: Nil

Treatment: Curettage and auto/allo cancellous bone grafting, if there is a pathological fracture - needs fixation with plate and screws. (small fragment set)