• Kei Watanabe, Toru Hirano, Keiichi Katsumi, Masayuki Ohashi, Atsushi Ishikawa, Ryoko Koike, Naoto Endo, Masatoyo Nishizawa, and Takayoshi Shimohata.
• Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, Niigata, 951-8510, Japan. Keiwatanabe_39jp@live.jp.
• Int Orthop. 2015 Dec 1; 39 (12): 2433-8.

BackgroundThe aim of this study was to determine the exacerbating factors of chronic low back pain (LBP) and strategic points against LBP in patients with Parkinson's disease (PD).MethodsForty-four consecutive PD patients complaining of LBP were included. Clinical characteristics of PD and LBP, spinal musculoskeletal condition, and clinical health status were evaluated.ResultsPatient age at PD and LBP onset was contiguous, and LBP time period was mainly described as constant or upon waking up. Exacerbating factors of LBP included modified Hoehn and Yahr stage and motor complications of PD, such as the wearing-off phenomenon and dyskinesia. Bone quality demonstrated osteopenia due to elevated bone resorption, with vitamins K and D insufficiencies. Spinal alignment demonstrated an increased sagittal vertical axis (120.2 ± 65.4 mm) with decreased lumbar lordosis (-24.0 ± 20.6°) and lumbar range of motion (28.7 ± 10.2°), which were significantly related to severity of LBP and quality of life assessments.ConclusionsThis study demonstrated that exacerbating factors of LBP include stage of motor function, motor complications of PD and stooped posture with decreased lumbar lordosis and range of lumbar movement. Therefore, control of PD, including motor complications, active treatment for osteoporosis and therapeutic exercise, are important for treating chronic LBP in patients with PD.

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