Medical Journal of the Islamic Republic Of Iran

en Spinopelvic Parameters as Risk Factors of Nonspecific Low Back Pain: A Case-Control Study Orthopedic Surgery Orthopedic Surgery Original Research Original Research Background: The effect of spinopelvic alignment on low back pain (LBP) incidence has been studied in many investigations. However, the interrelation between spinopelvic parameters and LBP is poorly understood. In particular, it is unknown whether particular patterns of spinopelvic parameters render nonspecific LBP. In this study, we aimed to evaluate the role of spinopelvic parameters as risk factors of nonspecific LBP.    Methods: In this case-control study, spinopelvic parameters, including lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), and pelvic incidence (PI), were compared between 148 patients with nonspecific LBP and 148 healthy controls. Demographic characteristics of the patients, such as age, gender, occupation, smoking, diabetes mellitus, and body mass index (BMI), were recorded as confounders. Spinopelvic parameters were assessed using radiographic findings in 2 groups. The analysis was done once as univariate (Kolmogorov-Smirnov test) and once as multivariate (multivariate logistic regression) analysis.    Results: Univariate analysis showed that female gender, higher BMI, smoking, and blue-collar jobs were associated with a higher risk of nonspecific LBP. LL, SS, and PI, but not PT, were all greater in LPB patients in the univariate analysis regarding the spinopelvic parameters. Multivariate analysis showed female gender (odds ratio adjusted (ORAdj) = 4.26 [95% CI, 2.11-9.58]; P = 0.001) and LL (ORAdj = 1.58; [95% CI, 1.18-3.22]; P = 0.026) were predictable risk factors for Nonspecific LBP.    Conclusion: Spinopelvic parameters, particularly LL, could be considered as risk factors of nonspecific LBP so that a more significant LL might indicate a greater risk of LBP. However, the role of other parameters in this association could not be neglected. Low Back Pain, Spinopelvic Parameter, Lumbar Lordosis 510 515 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-7348-1&slc_lang=en&sid=1 Babak Mirzashahi babakmirzashahi@yahoo.com 200319475328460077706 200319475328460077706 No 1. Department of Orthopedic Surgery, Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran Mikaiel Hajializade michaelalizadeh@gmail.com 200319475328460077707 200319475328460077707 No Department of Orthopedics, Rasul-e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran Shadi Abdolahi Kordkandi Shadiabdollahi15@gmail.com 200319475328460077708 200319475328460077708 No Department of Orthopedics, Rasul-e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran Hossein Farahini hfarahini@yahoo.com 200319475328460077709 200319475328460077709 No Department of Orthopedics, Rasul-e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran Mehdi Moghtadaei mmoghtadaei@gmail.com 200319475328460077710 200319475328460077710 No Department of Orthopedics, Rasul-e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran Ali Yeganeh Yeganeh.a@iums.ac.ir 200319475328460077711 200319475328460077711 No Department of Orthopedic Surgery, Iran University of Medical Sciences, Tehran, Iran Shayan Amiri amiri.shayan23@gmail.com 200319475328460077712 200319475328460077712 No Shohadaye Haftom-e-tir Hospital, Department of Orthopedics, School of ‎Medicine, Iran University of Medical Sciences, Tehran, Iran Seyed Mani Mahdavi mahdavi.sm@iums.ac.ir 200319475328460077713 200319475328460077713 Yes Shohadaye Haftom-e-tir Hospital, Department of Orthopedics, School of ‎Medicine, Iran University of Medical Sciences, Tehran, Iran