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Correlation Between Duration From Injury and Bone Mineral Density in Individuals With Spinal Cord Injury

Annals of Rehabilitation Medicine 2021년 45권 1호 p.1 ~ 6
최혜훈, 장소연, 유재완, 임성훈, 홍보영, 김준성,
소속 상세정보
최혜훈 ( Choi Hye-Hoon ) - Catholic University College of Medicine St. Vincent’s Hospital Department of Rehabilitation Medicine
장소연 ( Chang So-Youn ) - Catholic University College of Medicine Daejeon St. Mary’s Hospital Department of Rehabilitation Medicine
유재완 ( Yoo Jae-Wan ) - Catholic University College of Medicine St. Vincent’s Hospital Department of Rehabilitation Medicine
임성훈 ( Lim Seong-Hoon ) - Catholic University College of Medicine St. Vincent’s Hospital Department of Rehabilitation Medicine
홍보영 ( Hong Bo-Young ) - Catholic University College of Medicine St. Vincent’s Hospital Department of Rehabilitation Medicine
김준성 ( Kim Joon-Sung ) - Catholic University College of Medicine St. Vincent’s Hospital Department of Rehabilitation Medicine

Abstract


Objective: To investigate the correlation between bone mineral density (BMD) and duration of injury in individuals with spinal cord injury (SCI).

Methods: Patients with SCI who visited the outpatient department between January 2009 and January 2019 were enrolled. Patients’ most recent dual energy X-ray absorptiometry images were reviewed. According to the 2007 International Society for Clinical Densitometry guidelines, vertebrae with a local structural change were excluded when deriving spine BMD. If one or no vertebra is suitable for evaluation, spine BMD was judged as “improper for assessment”. Correlation analysis was performed between duration from injury and BMD Z-scores of the hip and spine.

Results: Among 83 individuals with SCI, the spines of 44 were judged as improper for assessment. The correlation analysis showed a significant negative relationship between the duration from injury and femur neck BMD (r=-0.40, p<0.01) and total proximal femur BMD (r=-0.39, p<0.01). However, no significant correlation was found between the duration from injury and spine BMD Z-score.

Conclusion: The duration of SCI correlated with hip BMD, but not with spine BMD. Further, more than half of the individuals with SCI could not undergo spinal assessment due to local structural changes. Therefore, spine BMD measurement is not an appropriate method for predicting future fracture risk in those with SCI.

키워드

Spinal cord injuries; Bone density; Osteoporosis

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