Study Design. A retrospective case-control analysis of prospectively collected data.
Objective. First, to evaluate spinal intervertebral mobility in patients with joint hypermobility (JHM) and matched controls without JHM, and second, to investigate the influence of JHM on back pain, disability, and general health status in young males.
Summary of Background Data. Despite the significance of benign JHM in the musculoskeletal feature, there have been no studies regarding low back pain and segmental motion in subjects with JHM. Furthermore, the clinical significance of the excessive segmental motion in young males with JHM remains unknown.
Methods. The JHM group included 32 subjects who had Beighton scale score of 4 or more according to 9° Beighton scale. The age-matched 32 young males without JHM were selectively included in the control group. In both groups, Oswestry Disability Index (ODI), visual analogue pain scale (VAS) for back pain, and Short-Form 36 was assessed. Radiological sagittal plane motions for each segment and whole lumbar spine were calculated as the difference between the Cobb angle measurements in the flexion and extension plain radiographs. In the lateral radiograph with neutral standing position, the intervertebral disc heights were also measured at each segment.
Results. The JHM group showed significantly larger range of motion and higher intervertebral disc height at each matched segment than the control group. The JHM group had significant increased VAS for back pain and ODI score, compared with control group. The Short-Form 36 physical function, role physical, role emotional, and physical component summary in the JHM group were significantly lower than in the control group.
Conclusion. This study shows that young males with JHM were found to have excessive lumbar segmental motion that was associated with increased low back pain, disability, and limited physical activity.
Level of Evidence: 4
This study shows that young males with joint hypermobility were found to have excessive lumbar segmental motion that was associated with increased low back pain, disability, and limited physical activity.
*Spine Center and Department of Orthopaedic Surgery, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Bundang-gu, Sungnam, Republic of Korea
†Department of Mechanical Engineering, Yonsei University, Seodaemun-gu, Seoul, Republic of Korea; and
‡Department of Orthopaedic Surgery, Seoul National University College of Medicine and Seoul National University Hospital, Jongno-gu, Seoul, Republic of Korea.
Address correspondence and reprint requests to Jin S. Yeom, MD, Spine Center and Department of Orthopaedic Surgery, Seoul National University College of Medicine and Seoul National University Bundang Hospital, 166 Gumiro, Bundang-gu, Sungnam, 463-707, Republic of Korea; E-mail: email@example.com
Acknowledgment date: October 8, 2012. First revision date: November 22, 2012. Second revision date: January 9, 2013. Third revision date: February 16, 2013. Acceptance date: February 28, 2013.
The manuscript submitted does not contain information about medical device(s)/drug(s).
No funds were received in support of this work.
No relevant financial activities outside the submitted work.