Effect of Ottobock 7E9 Hip Joint on the prosthetic walking ability of hip disarticulation amputees

Abstract

In recent years, prosthetic hip joints and other computer controlled sophisticated parts have been developed. However, the prosthetic hip joints that supplement the hip function of hip disarticulation amputees had not achieved a satisfactory level of functionality for young to older adults with high level of physical function. In the present study, we had the opportunity to use the Ottobock 7E9 Hip Joint. We compared the 7E9 Hip Joint with the conventionally used Ottobock 7E7 Hip Joint with respect to the effect on energy consumption and gait pattern during walking. The results of energy consumption showed that use of the 7E9 achieved gait with good efficiency. Gait pattern was changed ; the step length on the prosthetic leg side was reduced and cadence was increased. The present results suggest that the Ottobock 7E9 Hip Joint is a useful prosthetic hip joint for hip disarticulation amputees.