Reference values of lumbar spine range of motion by sex and age based on the assessment of supine trunk lateral bending-A preliminary study

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  • Nakanishi Shigetaka
    Department of Rehabilitation Medicine, Fukushima Medical University School of Medicine
  • Watanabe Kazuyuki
    Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine
  • Ouchi Kazuo
    Department of Rehabilitation Medicine, Fukushima Medical University School of Medicine
  • Hakozaki Michiyuki
    Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine
  • Oi Naoyuki
    Department of Rehabilitation Medicine, Fukushima Medical University School of Medicine
  • Konno Shinichi
    Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine

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<p>[Purpose] The purpose of this study was to clarify the preliminary reference values for the lumbar spine range of motion associated with lateral bending exercises by gender and age group. [Methods] Subjects were 82 volunteers without low back pain, including five males and five females in each age group from 16-19 to 80-89 years. All subjects underwent radiographs of the lumbar spine with lateral flexion; the range of lateral flexion of the vertebrae from T12 to the sacrum (ROLB) was measured twice by three observers. [Results] The ROLB of the entire T12-S1 of all subjects showed a significant negative correlation with age in both sexes (p < 0.01). The ROLB of the lumbar spine tended to be greater in females, with a statistically significant difference between those aged 16-19 and 70-79 (p < 0.05). Lateral flexion angles for each intervertebral segment were largest at L3-L4 and smallest at L5-S1 (0.7°). [Conclusion] Lumbar ROLB reference values were examined by gender and age group; ROLB was greatest in L3-L4, and ROLB tended to be lower in older age groups.</p>

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