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Study cites factors for postoperative shoulder imbalance in patients with AIS, double thoracic curve
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Investigators of this study found factors associated with postoperative shoulder imbalance after corrective surgery for a double thoracic curve in patients with adolescent idiopathic scoliosis included a higher Risser grade, larger postoperative proximal wedge angle and a higher postoperative proximal thoracic curve/middle thoracic curve ratio.
Researchers identified 80 patients with adolescent idiopathic scoliosis and a double thoracic curve who underwent corrective surgery. During the follow-up examination, investigators categorized patients as having either a postoperative shoulder imbalance or an absence of postoperative shoulder imbalance. Follow-up examinations were at 1 month, 6 months, 12 months postoperatively and then yearly.
Prior to surgery and postoperatively, the groups were compared for radiographic parameters including the Cobb angle of the proximal thoracic curve and middle thoracic curve, radiographic shoulder height, clavicle angle, T-1 tilt, trunk shift, proximal wedge angle and distal wedge angle.
Results showed that with time, the radiographic shoulder height decreased in the group without the presence of a postoperative shoulder imbalance compared with patients in the group with the presence of a postoperative shoulder imbalance. Investigators found postoperative shoulder imbalance was associated with preoperative Risser grade, postoperative proximal wedge angle and the postoperative proximal thoracic curve/middle thoracic curve ratio. An addition, investigators found postoperative shoulder imbalance trended with the presence of the adding-on phenomenon. ‒ by Monica Jaramillo
Disclosure: The researchers report no relevant financial disclosures.
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