Rucksack type orthosis

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A special orthosis named 'rucksack type orthosis' has been devised and is used for patients who have back pain due to anterior bending posture of the trunk. So-called rucksack type orthosis (RO), has been used to relieve low back pain and fatigue during prolonged standing and walking for the elderly with spinal deformities. However, little is known about the RO's kinematical effects.
Studies have found that Lumbar curvature and the trunk angle of inclination during standing improved significantly when the RO was used. Back extensor muscle activities (T9, L3, and L5) during standing and walking decreased significantly when the RO was used. There were no significant differences in the activities of the upper trapezius and vastus lateralis during standing and walking. Elderly with lumbar deformities might be able to stand and walk more efficiently with the RO. The RO could prove to be valuable in preservation therapy for the elderly with decreased lumbar lordosis or lumbar kyphosis.
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