[Osteoid osteoma of the hand. Apropos of 46 cases].

On the basis of a multicentre study, 46 cases of osteoid osteoma of the hand were reviewed on behalf of the GETO. The phalangeal localization is unusual both clinically (segmental digital hypertrophy, pseudo-hippocratism), radiologically (cortical hypertrophy with poorly or non-visible nidus) and therapeutically. The preoperative diagnosis is difficult, but must be as precise as possible in order to select the site of incision and to accurately resect the nidus. Treatment must consist of block resection of the lesion followed, when necessary, by autologous bone graft with arthrodesis of an adjacent joint.