Affiliations: [a] Department of Physical Therapy, Kawasaki Junior College of Rehabilitation, Okayama, Japan | [b] Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Hyogo, Japan | [c] Rehabilitation Center, Kawasaki Medical School Hospital, Okayama, Japan | [d] Instituto Nacional de Rehabilitación, Lima, Perú | [e] Department of Bone and Surgery, Kawasaki Medical School, Okayama, Japan | [f] Department of Rehabilitation Medicine, Kawasaki Medical School, Okayama, Japan
Correspondence:
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Corresponding author: Shigeharu Tanaka, Department of Physical Therapy, Kawasaki Junior College of Rehabilitation, 672, Matsushima, Kurashiki, Okayama, 701-0192, Japan. Tel.: +81 86 464 1179; Fax: +81 86 464 1108; E-mail: stanaka@med.kawasaki-m.ac.jp
Abstract: Background:The incidence of low back pain (LBP) is high in patients with hip osteoarthritis (OA). Evidence from previous studies suggests that lumbar alignments and hip range of motion (ROM) are important etiological factors for LBP. However, no studies have investigated which factors that have the greatest influence on LBP. Objective:This investigation aimed to collectively examine factors related to LBP in patients with hip OA, including lumbar lordosis angle (LLA), leg length discrepancy (LLD), and hip ROM. Methods:Thirty-five patients participated in this study. LBP was treated as a dependent variable, whereas hip ROMs were treated as independent variables. Patients’ age and body mass index (BMI) were recorded as confounding factors, as were LLA and LLD. A logistic regression model was performed to determine the most accurate set of variables to predict LBP. Results:BMI and ROM of hip flexion on the affected side were identified as significant variables. Conclusions:Our results suggest that BMI and ROM of hip flexion on the affected side are related to LBP in patients with hip OA and need to be assessed.
Keywords: Low back pain, osteoarthritis of the hip, prediction
