Abstract
A custom-made thermoplastic splint was developed for the protection of the upper extremity after experimental surgery. It was used in 39 cases for a duration of 12-79 days. Complications were minimal and transient. The cast was easy to make, in one piece and inexpensive. Frequent removal for wound inspection was simple. This splint provides a good immobilization and protection of the arm and hand in the nonhuman primate.