[Chronic compartment syndrome of the first dorsal interosseous muscle: 2 case reports].

Chronic exercise-induced compartment syndrome of the first dorsal interosseous muscle of the hand is a rare condition. The presented complaint is a dull muscle pain which can be increased by hyperextension of the index metacarpo-phalangeal joint and by repetitive key grip. Two patients complaining of these symptoms could successfully be treated by simple fasciotomy of the first dorsal interosseous compartment.