Most cases of obstetrical brachial plexus palsies are mild traction injuries which resolve under physical therapy within several weeks or months. Severe ruptures or avulsion injuries of the plexus can lead to lifelong impairment of the upper extremities. Hence, in severe brachial plexus injuries the indications for brachial plexus reconstruction should be evaluated, early. At the age of about 3 months, the infant should be presented in a centre specialised in obstetrical brachial plexus palsies. In almost all cases intensive physical therapy is performed. In addition, many patients require splinting in order to gain function as part of the conservative therapy or for postoperative fixation. Depending on the type of splint, different demands are made on design, material and strategy of adjustment. Many different natural and synthetic materials are available for orthopaedic constructions. Because of its good adjustment options, the use of low temperature thermoplastic is steadily increasing. This contribution presents an overview of our currently used splints, new technical developments in our experience with more than 200 patients with obstetrical brachial plexus palsy. We present our experience with the most common splints for the use in fixation after birth-related brachial plexus surgery, subscapularis release, trapezius muscle transfer and functional improvement of hands with a lack of wrist extension.
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