Pellegrini R, Denza G, Brunelli S, Zenardi D, Imperio M, Vannozzi G, Traballesi M
ITOP Spa, Officine Ortopediche, Palestrina, Rome, Italy.
Fondazione Santa Lucia, Scientific Institute for Research, Hospitalization and Health Care, Rome, Italy.
Can Prosthet Orthot J. 2021 Jul 14;4(1):36252. doi: 10.33137/cpoj.v4i1.36252. eCollection 2021.
The subischial socket interface design is a promising new shape of socket for persons with transfemoral amputation. Typically, the proximal trim line is located distal to the ischial tuberosity, improving comfort in prosthetic users without interfering with gait parameters compared to Ischial Containment Socket (ICS). No studies have investigated the performances of a subischial sockets with suction suspension system. A new subischial socket (Hybrid Subischial Socket - HySS) combined with a hypobaric passive suspension system has been recently developed.
To assess the effects of HySS in terms of comfort, hip range-of-motion and gait parameters.
Three persons with transfemoral amputation were tested first using their usual ICS and then after one month of continuous use of HySS.
The following parameters improved in all participants using HySS: 1) hip range-of-motion, 2) walking speed and distance, 3) Timed-Up-and-Go-Test time, 4) stride length, 5) double support duration, 6) peak value of hip extension during stance, 7) satisfaction with the prosthesis.
These findings suggest that the use of HySS could allow improvements for prosthetic use.
坐骨下接受腔接口设计是一种很有前景的新型经股骨截肢者接受腔形状。通常，近端修剪线位于坐骨结节远端，与坐骨包容接受腔（ICS）相比，在不干扰步态参数的情况下提高了假肢使用者的舒适度。尚无研究调查过带有负压悬吊系统的坐骨下接受腔的性能。最近开发了一种结合负压被动悬吊系统的新型坐骨下接受腔（混合坐骨下接受腔-HySS）。
评估HySS在舒适度、髋关节活动范围和步态参数方面的效果。
三名经股骨截肢者首先使用他们常用的ICS进行测试，然后在连续使用HySS一个月后再次测试。
所有使用HySS的参与者的以下参数均有所改善：1）髋关节活动范围，2）步行速度和距离，3）计时起立行走测试时间，4）步幅，5）双支撑持续时间，6）站立期髋关节伸展峰值，7）对假肢的满意度。
这些发现表明，使用HySS可以改善假肢的使用效果。
