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Functional Outcomes and Complications Following Scapulothoracic Arthrodesis in Patients with Facioscapulohumeral
İlker Eren1, Ali Erşen2, Olgar Birsel1
1Departments of Orthopaedics and Traumatology (İ.E., O.B., and M.D.) and Neurology (P.O.), Koc University School of Medicine, Istanbul, Turkey.
Background:
Facioscapulohumeral dystrophy (FSHD) is an autosomal-dominant myopathy characterized by facial and shoulder girdle muscle weakness with scapular winging. Scapulothoracic arthrodesis is a successful treatment approach for patients with <90° of shoulder elevation. The purpose of the present study was to assess functional outcomes and complications following scapulothoracic arthrodesis in patients with FSHD.
Methods:
We retrospectively reviewed the records of 40 patients (64 shoulders) in whom scapulothoracic arthrodesis was performed. To achieve fusion, multiple multifilament cables were used together with autologous bone and allograft bone. Preoperative and postoperative shoulder elevation and abduction; Disabilities of the Arm, Shoulder and Hand (Quick version, qDASH) scores; and pulmonary function were compared. Recorded complications were classified as pulmonary or scapular.
Results:
The mean age of the patients at the time of the operation was 25.4 years (range, 15 to 60 years), and the mean duration of follow-up was 71.2 months (range, 12 to 185 months). When the preoperative values were compared with those at the latest follow-up, significant improvement was noted in terms of elevation (from a mean [and standard deviation] of 60.6° ± 17.2° to 123.7° ± 26.7°; p < 0.001), abduction (from 52.7° ± 15.8° to 98.8° ± 20.3°; p < 0.001), and qDASH scores (from 34.7 ± 11.4 to 13.3 ± 13.1; p < 0.001). The overall complication rate was 26.6%. There were 7 pulmonary complications (4 pneumothoraxes, 2 pleural effusions, and 1 major atelectasis), and 5 chest tube placements were required. Ten complications (including 3 rib fractures, 1 brachial plexus palsy, 2 cases of implant irritation, 2 nonunions, 1 delayed union, and 1 scapular fracture) were related to the scapular fixation, and 7 revision procedures were required. Scapulothoracic fusion was achieved in all patients but 1, who had a scapular fracture. Pulmonary function tests were performed for 19 patients, and no difference was observed between preoperative and postoperative results.
Conclusions:
Scapulothoracic arthrodesis with use of multifilament cables is a successful surgical technique with high fusion rates and low morbidity. Pulmonary complications are common but resolve with careful attention.
Level Of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
