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Fig. 4 | BioMedical Engineering OnLine

Fig. 4

From: Effect of a rigid ankle foot orthosis and an ankle foot orthosis with an oil damper plantar flexion resistance on pelvic and thoracic movements of patients with stroke during gait

Fig. 4

A schematic design of the AFO with oil damper unit. The oil damper unit consists of a hydraulic cylinder(1), a ring portion metal plate (2), and a metal plate (3). An adjustment screw (4) controls the flow rate of the oil by varying the orifice diameter; the smaller the orifice diameter, the lower the flow rate, allowing for greater resistance to plantarflexion of the ankle joint at heel strike. A spring (5) assists with dorsiflexion. The rod cap (6) is used to set the initial angle of the ankle joint

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BioMedical Engineering OnLine

ISSN: 1475-925X

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