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It seemed to be common sense that malnutrition was associated with osteoporosis, but there were few studies with detailed data proving that. Additionally, the association between BMI and osteoporosis was still under discussion. In our study of 138 patients, we first confirmed the association between nutrition and osteoporosis with propensity score matching method reducing the confounding bias, then discovered that body mass index (BMI) and 25OHD level acted as two crucial factors of nutrition risk-mediated osteoporosis. Moreover, a new BMI classification was proposed in our article to do more help for nutrition management and anti-osteoporosis treatment for the old in China. Consequently, nutrition is important to bone health, with BMI and 25OHD level playing key roles. [ABSTRACT FROM AUTHOR]

Background: The treatment of congenital scoliosis associated with split cord malformation (SCM) raises the issue of how to best manage such patients to avoid neurological deficit while achieving a satisfactory correction.Methods: This prospective clinical study was performed at our center from March 2000 through June 2013. We enrolled a total of 214 patients (61 male and 153 female) with congenital scoliosis associated with SCM who were undergoing spinal correction surgery. The mean age at surgery was 14.1 years. The inclusion criteria were congenital scoliosis with confirmed SCM; status as neurologically intact or stable over the preceding 2 years; and no neurological deterioration as evidenced on traction, side-bending, or fulcrum-bending radiographs. Patients with unstable neurological status or for whom vertebral column resection surgery was planned were excluded. All patients underwent scoliosis surgery without prophylactic detethering.Results: On the basis of the Pang classification, 73 patients were in the type-I SCM group, and 141 were in the type-II SCM group. The groups did not differ significantly with respect to preoperative characteristics, operative time, blood loss, or number of levels fused. The mean follow-up was 37 months (range, 24 to 108 months). The rate of scoliosis correction was lower in the type-I group than in the type-II group (p < 0.05). In the type-I group, the correction rate was 48.9% at 1 week postoperatively and 42.2% at the last follow-up. In the type-II group, the correction rate was 54.7% at 1 week postoperatively and 47.9% at the last follow-up. Eleven (5.1%) of the patients experienced transient neurological complications, with no significant difference between the groups (p = 0.415). No patient experienced permanent neurological deficit during surgery or follow-up.Conclusions: Patients with congenital scoliosis associated with SCM, regardless of type, can safely and effectively undergo spinal deformity correction and achieve spinal balance without neurological intervention. For such patients with intact or stable neurological status, prophylactic detethering prior to scoliosis surgery may not be necessary.Level Of Evidence: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence. [ABSTRACT FROM AUTHOR]