Transfer of the supinator nerve to the posterior interosseous nerve for hand opening in tetraplegia through an anterior approach.

Abstract

We report a retrospective series of 44 transfers in 26 patients in whom a functioning supinator nerve was transferred to a paralyzed posterior interosseous nerve through a single, anterior approach to re-animate hand opening in mid-cervical tetraplegia. Eighteen patients underwent concurrent nerve or tendon transfers to re-animate grasp and/or pinch through the same anterior incision. We evaluated the strength of the innervated muscle at mean follow-up of 24 months (range 12-27). The strength attained in our patients was equivalent to the strength after the transfer through a posterior approach reported in the literature. Nineteen of our patients were satisfied with the hand opening procedure. First webspace opening was the only variable to correlate with patient satisfaction. We conclude that the anterior approach yields similar results to the posterior approach and has the advantage of allowing easier access for simultaneously performing nerve or tendon transfers to reconstruct grasp and pinch.<b>Level of evidence:</b> IV.