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Journal of the Korean Academy of Rehabilitation Medicine 1995;19(4):2.
The Effect of Functional Electrical Stimulation on the Bones of Paralyzed Limbs
Young Hee Lee, M.D., Nam Hee Won, M.D., Jun Sung Park, M.D. , Roh Wook Park, M.D.
Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine
기능적 전기자극이 마비된 하지의 골 조직에 미치는 영향
이영희, 원남희, 박준성, 박노욱
연세대학교 원주의과대학 재활의학교실
Abstract

The effect of muscular contraction on the changes of bone mineralization after paralysis was studied in seven spinal cord injury paraplegic rabbits using functional electrical stimulation. The paralyzed quadriceps femoris muscle of one side was contracted by electrical stimulation for 30 minute daily and the other side was not stimulated for comparison. The bone mineral density(BMD) was measured by Dual Photon Absorptiometry(Lunar DPA) in each lower limb before and after the spinal cord injury about one or two weeks intervals for the survival periods.

In the 7 rabbits included in this study, the bone mineral density of both sides was decreased in all the rabbits 4 weeks after spinal cord injury. The decrements of BMD for stimulated and nonstimulated limb were 8.07±7.01 % and 10.66±8.13%, respectively during first 4 weeks after spinal cord injury. The BMD of stimulated side limb was decreased significantly less than that of the other side (p<0.001).

These findings suggest that the early muscular contraction by functional electrical stimulation is beneficial to lessen the osteoporotic changes in paralyzed limbs of spinal cord injury.

Key Words: Functional electrical stimulation, Osteoporosis, Bone mineral density


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