Association between body mass index,body height,and the prevalence of spinal deformities |
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| Authors: | Oded Hershkovich Alon Friedlander Barak Gordon Harel Arzi Estela Derazne Dorit Tzur Ari Shamiss Arnon Afek |
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| Institution: | 1. Department of Orthopedic Surgery, Chaim Sheba Medical Center, Tel Hashomer, 52621 Israel;2. Medical Corps, Israeli Defense Forces, Israel;3. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801 Israel;4. Central Management, Chaim Sheba Medical Center, Tel Hashomer, 52621 Israel;1. Section of Neurosurgery, The University of Chicago, Chicago, Illinois, USA;2. Baylor College of Medicine, Texas Children''s Hospital, Houston, Texas, USA;1. Department of Neurosurgery, Faculty of Medicine, University Hospital Geneva, Geneva, Switzerland;2. Department of Neurosurgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland;3. School of Medicine and Public Health, University of Newcastle, Newcastle, Australia;1. Division of Pulmonary Medicine, University of Cincinnati, Cincinnati Children''s Hospital Medical Center, Cincinnati, OH;2. WordCraft, Medical Writing Consultants, Los Angeles, CA;3. Division of Pulmonary Medicine, Mayo Children''s Hospital, Mayo Medical School, Rochester, MN;4. Division of Orthopedic Surgery, University of Cincinnati, Cincinnati Children''s Hospital Medical Center, Cincinnati, OH;5. Division of Pulmonary Medicine, University of Washington, Seattle Children''s Hospital, Seattle, WA |
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| Abstract: | Background contextThe most common spinal deformities among adolescents are adolescent idiopathic scoliosis (AIS; 2%–3% prevalence) and Scheuermann kyphosis (SK; 1%–8% prevalence). Both are believed to have a genetic influence in their etiology. The association between body mass index (BMI) and body stature and their possible association to spinal deformities is uncertain.Study designA cross-sectional prevalence study.PurposeTo examine the prevalence of all adolescent spinal deformities according to the extent of their severity as well as their possible association to BMI and body height.Outcome measuresSubjects diagnosed as having spinal deformities were classified into one of three severity groups; “Mild,” “Intermediate,” or “Severe,” according to their curve scoliosis or kyphosis measurement with a standing X-ray.MethodsThe data for this study were derived from a medical database containing records of 17-year-old male and female patients before their recruitment into mandatory military service. Information on the disability codes associated with spinal deformities according to the Regulations of Medical Fitness Determination was retrieved. Logistic regression models were used to assess the association between the BMI and body height to various degrees of spinal deformities by severity.ResultsThe study cohort included 829,791 consecutive subjects, of whom 103,249 were diagnosed with spinal deformities (76% were mild in degree). The prevalence of spinal deformities was significantly greater among the underweight male and female patients (p<.001). Increased BMI had a protective effect for developing spinal deformities. The odds ratios for severe spinal deformities were greater compared with mild spinal deformities in the underweight groups. The risk for developing spinal deformities increased significantly with height for both genders (p<.001).ConclusionsAn association between height and the risk for spinal deformities by severity was found for all height groups. Below normal BMI is associated with severity of spinal deformities, whereas above-normal BMI apparently has a protective effect. Body height is also positively associated with the severity of spinal deformities. |
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| Keywords: | Spinal deformities Body mass index (BMI) Height Obesity Underweight Overweight Adolescents Scoliosis Scheuermann kyphosis |
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