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  • Title: [Early outcome of vertical expandable prosthetic titanium rib technique in treating early-onset scoliosis].
    Author: Qiu Y, Sun X, Wang B, Ding Q, Zhu ZZ, Qian BP, Yu Y, Zhu F, Ma WW.
    Journal: Zhonghua Wai Ke Za Zhi; 2012 Oct; 50(10):883-8. PubMed ID: 23302456.
    Abstract:
    OBJECTIVE: To investigate the early outcome of vertical expandable prosthetic titanium rib (VEPTR) technique in treating early-onset scoliosis. METHODS: This study recruited 11 early-onset scoliosis patients (8 boys and 3 girls) who received VEPTR treatment from December 2006 to July 2011 with a minimum follow-up of 12 months. The average age at initial surgery was (7 ± 3) years (range, 3.1 to 9.8 years). VEPTR device, either rib to rib or rib to lumbar, was implanted at initial surgery. During the regular post-operative follow-ups, expansion surgeries were scheduled at an interval of 6 to 12 months. Measurements of primary curve magnitude, apical vertebral translation, thoracic height and T(1)-S(1) height were performed on radiographs, and were compared between those of preoperatively, postoperatively, and at latest follow-up through paired-t tests. RESULTS: All patients had a mean follow-up of (32 ± 11) months. Totally 41 surgeries were performed, averagely 3.7 surgeries per patient; and 30 expansion surgeries were carried out, averagely 2.7 surgeries per patient. The average interval for each expansion surgery was 8 months. From preoperatively to latest follow-up, the Cobb angle of primary curves was averagely corrected from 78° ± 18° to 55° ± 11° (t = 4.931, P < 0.05), and apical vertebral translation and thoracic kyphosis displayed slight improvement. Average thoracic height increased from (13.3 ± 2.0) cm to (17.2 ± 2.4) cm (t = 8.365, P < 0.001), and average T(1)-S(1) height from (24.4 ± 3.8) cm to (32.5 ± 5.3) cm (t = 9.080, P < 0.001). After initial surgery with VEPTR instrumented, gains in thoracic height and T(1)-S(1) height per expansion surgery averaged (0.8 ± 0.3) cm and (1.8 ± 0.4) cm, respectively. Eight complications occurred in 6 patients, including rib cradle dislodgements, displayed infection, intraoperative pleura rupture and loosening of lumbar pedicle screws. CONCLUSIONS: VEPTR technique proves to be an effective way of preventing curve progression in early-onset scoliosis patients while allowing growth of spine and chest. Yet, indications for such a technique need to be strictly selected because of the relatively high complication rate.
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