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  • Title: [Ineffective treatment technique of convex epiphysiodesis for congenital scoliosis].
    Author: Li YT, Xu LL, Xia C, Pan W, Sheng F, Qiu Y, Zhu ZZ.
    Journal: Zhongguo Gu Shang; 2020 Feb 25; 33(2):116-20. PubMed ID: 32133808.
    Abstract:
    OBJECTIVE: To discuss the long-term outcome of convex epiphysiodesis in the treatment for congenital scoliosis (CS). METHODS: The clinical data of 22 patients with hemivertebral deformity undergoing convex epiphysiodesis from the October 1998 to Febuary 2008 were respectively analyzed. There were 12 males and 10 females. The whole spine anteroposterior radiographs were taken preoperatively, at 3-month postoperatively and at the final follow-up to measure the main curve and the compensatory curve. The progression rate was calculated for each patient. Observing the correlation between the progression rate and annual progression of the scoliosis and age, gender, hemivertebral number, hemivertebral position, preoperative main curve Cobb angle and compensatory curve Cobb angle, comparing different ages, genders, hemivertebral number and position, and preoperative main curve Cobb angle on the progression of postoperative curve. RESULTS: The mean Cobb angle of main curve changed from (40.5±9.8) ° before surgery to (39.5±11.1) ° at 3 months after surgery, which significantly increased to (46.8±13.9) ° in the final follow-up. Meanwhile the mean Cobb angle of compensatory curve was changed from (20.1±10.8) ° before surgery to (23.0±11.1) °, which significantly increased to (29.9±11.5) ° in the final follow-up. There were no significant differences in the Cobb angle of the main curve and the compensatory curve between postoperative 3 months and before operation (P>0.05). The difference between the final follow-up and the preoperative, postoperative 3 months was statistically significant (P<0.01). Twenty patients experienced progression of both main curve and compensatory curve, with a mean progression rate of (19.2±17.9)% for main curve and (39.6±37.0)% for compensatory curve. The annual progression volume was (1.5± 1.4) ° for main curve and (1.4±1.3) ° for compensatory curve. Three patients underwent lateral convex orthopedic internal fixation due to postoperative scoliosis progression. The curve progression was significantly correlated with age at the time of surgery and hemivertebral number. There was a significant correlation between the age of the operation, the main curve angle, the preoperative compensatory curve angle and the annual progression volume of the main curve (P<0.05). CONCLUSION: The convex epiphysiodesis technique cannot effectively prevent curve progression of CS patients in the long-term follow-up. It is not recommended to apply this technique to the treatment of patients with congenital hemivertebrae.
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