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KMID : 0388720210280040108
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Journal of Korean Society of Spine Surgery
2021 Volume.28 No. 4 p.108 ~ p.115
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Feasibility of Dynamic Ultrasound Imaging of the Lumbar Multifidus to Assess Spinal Exercise
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Park Ji-Hun
Lee Sang-Min
Park Tae-Gyu
Choi Yong-Soo
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Abstract
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Study Design: Feasibility study.
Objectives: This study was conducted to investigate the morphological changes in post-exercise ultrasound imaging of the lumbar multifidus muscle to evaluate the effects of spinal exercise.
Summary of Literature Review: There is a paucity of reports assessing appropriate spinal exercise programs in elderly patients with sarcopenia.
Materials and Methods: This study was conducted on 23 volunteers with no history of spinal disease. The volume and thickness of the lumbar multifidus muscle as a trunk stabilizer were measured by dynamic ultrasound imaging, at rest and after exercise of the muscle to evaluate the strength of the extensor muscle. The criteria for diagnosing sarcopenia were analyzed, including gait speed, hand grip strength, muscle mass, and thickness change between at-rest and post-exercise states.
Results: At rest, the mean volume and thickness of the lumbar multifidus muscle were 357.17±59.25 mm² and 2.54±0.32 cm, respectively. After exercise, the mean volume and thickness of the lumbar multifidus muscle changed to 407.35±70.10 mm² and 2.78±0.36 cm, respectively. There was a significant increase in lumbar multifidus volume (14.00%, p=0.01) and thickness (9.42%, p=0.01) after exercise. The mean gait speed was 10.2±0.15 m/s and the mean hand grip strength was 19.30±2.08 kg. There was a positive correlation between changes in lumbar multifidus volume and hand grip strength (r=0.56, p=0.01).
Conclusions: These results suggest that dynamic ultrasound imaging of the lumbar multifidus could be helpful in evaluating the effect of spinal exercise.
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KEYWORD
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Lumbar, Multifidus muscle, Diagnosis, Ultrasound
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