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  • Title: Surgical treatment of spinal deformities in spinal muscular atrophy: a single-center experience from China.
    Author: Wang Z, Feng E, Jiao Y, Lin J, Zhao J, Chen W, Shen J.
    Journal: Eur Spine J; 2022 Nov; 31(11):3089-3097. PubMed ID: 35972554.
    Abstract:
    PURPOSE: To report the clinical characteristics and surgical outcomes of scoliosis in patients with spinal muscular atrophy (SMA) from Mainland China. METHODS: Nineteen patients were retrospectively analyzed. Demographic, anthropometric and respiratory parameters were collected preoperatively. Surgical program was analyzed. Radiographic data were measured perioperatively. Motor status, ventilation support, sitting ability and respiratory symptoms were evaluated preoperatively and at final follow-up. RESULTS: Age at surgery was 17.08 (12.83, 20.08) years. More than 40% of patients were diagnosed with low weight. Pulmonary dysfunction was observed in all patients. All patients received posterior spinal fusion (PSF). Sacroiliac fixation with sacral-2 alar iliac technique was used in 16 patients. Major curve correction rate was 54.87 ± 16.14%. Pelvic obliquity correction rate was 63.84 ± 23.70%. T1-T12 height, space-available-for-lung ratio and thoracic transverse diameter were increased (p < 0.001). Percentage of patients capable of sitting independently increased from 26.32% preoperatively to 73.68% at final follow-up. Cumulative scores of sitting-related items in muscular dystrophy spine questionnaire improved from 19.11 ± 5.40 preoperatively to 26.21 ± 5.20 at final follow-up. Total scores of symptomatic domains in St. George's Respiratory Questionnaire decreased from 4 (2, 12) preoperatively to 1 (0, 3) at final follow-up. CONCLUSIONS: SMA patients in China always present severe scoliosis at late adolescence, accompanied with high proportion of low weight and pulmonary dysfunction. PSF is effective for the correction of scoliosis and pelvic obliquity and the improvement of thoracic morphology. Sitting ability and respiratory symptoms were improved postoperatively.
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