The adjustable supination splint is used in select cases in which traditional mobilization therapy is not productive in supination gains. The success of the splint varies depending on many factors, including the type and severity of the injury; the timing of the intervention; the patient's age; and the patient's tolerance of and compliance with the treatment program. The therapist must consult with the physician and have his or her approval before initiating the treatment regimen. Splint use is contraindicated in patients with unstable fractures or with injuries that require surgical intervention before splinting. Therapists should watch for edema, pain, and neurological changes. Depending on the severity of these symptoms, the splint may need to be discontinued or the wearing time and tension adjusted. In our experience at Union Memorial Hospital and in our weighing of the above considerations, we have found favorable results in the use of the adjustable supination splint, with gains in range of motion and function in select patients.