EFFECTS OF THE ANKLE ANGLES OF AN ANKLE FOOT ORTHOSIS ON FOOT PRESSURE DURING SLOPE WALKING IN HEALTHY ADULTS
Objectives: This study was to investigate the effects of the ankle angles of an ankle foot orthosis (AFO) on foot pressure during uphill and downhill slope walking in healthy young adults.
Methods: A total of 16 healthy adults without specific diseases in the musculoskeletal or neurological system participated in this study. Participants performed to walk on the uphill and downhill slope with four different ankle angles (-5°, 0°, 5°, and 10°) of an AFO. The recorded pathway length of the center of pressure (COP) and plantar foot pressures of each pressure sensor was measured using the F-scan system.
Results: The COP lengths of anterior-posterior and medio-lateral directions were significant differences between uphill walking and downhill walking, and the length was long in the ascent slope and less in the descending slope. Also, the medio-lateral trajectory length of the pressure center was longer in the downhill slope. In the foot pressure distribution of each angle when walking the uphill and downhill slope were significantly different in specific areas with different ankle angles of an AFO.
Conclusion: It was found that the ankle angles of an AFO affect the gait pattern and plantar foot pressure distribution when walking on the slope. Therefore, the walking of the slope is affected in the joint angle of AFO, so it is considered that proper angle adjustment is necessary.