[Aneurysmal bone cyst of the second metacarpal: technique of conservation of the metacarpophalangeal joint and short-term result. A case report].

The authors report an aneurismal bone cyst in the second metacarpal of a 16-year-old patient. It was an aneurismal bone cyst of the agressive diffuse variety involving the proximal metaphyseal, diaphyseal and distal epiphyseal zones. Conservation of the MCP joint of the index was the priority. The authors report the technique used as well as the clinical and radiological results.