Impact of overweight and obesity on the musculoskeletal system using lumbosacral angles
Received 23 June 2015
Accepted for publication 10 November 2015
Published 10 March 2016 Volume 2016:10 Pages 291—296
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Qian Ding
Peer reviewer comments 2
Editor who approved publication: Dr Johnny Chen
Ndubuisi OC Onyemaechi,1,2 Godson E Anyanwu,3 Emmanuel N Obikili,3 Okechukwu Onwuasoigwe,1,2 Okechukwu E Nwankwo1,2
1Department of Surgery, College of Medicine, University of Nigeria Enugu Campus, Enugu, Nigeria; 2University of Nigeria Teaching Hospital, Enugu, Nigeria; 3Department of Anatomy, College of Medicine, University of Nigeria, Enugu, Nigeria
Background: Overweight and obesity have been identified as independent risk factors for musculoskeletal disorders. However, the association between obesity and low back pain remains controversial. Little is known about the effects of overweight and obesity on the angles of the lumbosacral spine. The objective of this study was to evaluate the effects of body mass index (BMI) and waist–hip ratio (WHR) on lumbosacral angles.
Methods: The effects of BMI and WHR on the lumbar lordosis angle (LLA), lumbosacral angle (LSA), sacral inclination angle (°°), and lumbosacral disc angle (LSDA) of 174 overweight and obese subjects (test group) and 126 underweight and normal-weight subjects (control group) were analyzed.
Results: The test group had a significantly higher mean LSA, LLA, sacral inclination angle (SIA), and LSDA (P=0.001). A significant correlation was noted between BMI and LSA (P=0.001), LLA (P=0.001), SIA (P=0.001), and LSDA (P=0.03). There was also a positive relationship between WHR and LSA (P=0.012), LLA (P=0.009), SIA (P=0.02), and LSDA (P=0.01).
Conclusion: There was an increase in lumbosacral angles in individuals with raised BMI and WHR. This may result in biomechanical changes in the lumbosacral spine, which increase the incidence of low back pain.
Keywords: body mass index, waist–hip ratio, lumbosacral angles
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