Ossifying neuropathy of the median nerve at level of the distal forearm and carpal tunnel in a patient with familial history of heterotopic calcification.

We report an uncommon case of heterotopic ossification affecting the median nerve at the level of the distal forearm and carpal tunnel with some unusual features: its length, the concomitant involvement of the ulnar nerve at Guyon's canal and a positive family history of heterotopic ossification.