Partial myotomy/myectomy of the trapezius muscle with an asleep-awake-asleep anesthetic technique for treatment of cervical dystonia - Technical note

The authors describe a technique for performing partial sectioning and myec tomy of the trapezius muscle in patients with severe cervical dystonia that is unresponsive to conservative treatment. Asleep-awake-asleep anesthesia allows intraoperative control of the sectioning procedure to avoid causing postoperative weakness of arm elevation above the horizontal plane. The pro cedure has been performed successfully in three patients. In all cases the dystonic posture of the shoulder and local pain were improved postoperative ly. There were no new deficits. This technique can be used as an adjunct to other peripheral surgical procedures in patients with marked laterocollis and dystonic elevation and anteversion of the shoulder.