New Rhizotomy Procedure for Primary Spasmodic Torticollis

Objective: Spasmodic torticollis (ST) is an idiopathic neurologic disorder affecting the muscles of the neck. Surgery is a preferred treatment, when conservative treatments or Botulinum neurotoxin injections fail to relieve the symptoms. Our objective here is to report the outcome of a new surgical method for treating ST patients in our department. Methods: The new procedure consists of rhizotomy of the spinal accessory nerve (SAN) and C1–C2 nerve roots, coagulation of the distal end of SAN (Group A). The results of this procedure were compared with a group of patients who underwent only rhizotomy of the SAN and anterior C1–C2 nerve roots (Group B). Clinical data were retrospectively collected from 39 patients with laterocollis and rotatory torticollis subtypes of ST from Jun 1, 2014 to Jun 1, 2015. The effect of the surgery was evaluated by the reduction in the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) total scores preoperatively and postoperatively. The mean duration of the postoperative follow-up period was 2.57 years, ranging from 2 to 3 years. Results: The mean preoperative TWSTRS score was 65.89 ± 3.55 and 65.80 ± 3.45 in Groups A and B, respectively. Six months after the surgery, the TWSTRS scores decreased to 40.00 ± 12.14 and 26.04 ± 11.77, respectively. There was a statistically significant improvement preoperatively and postoperatively in both groups (P 

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