THE HYBRID SUBISCHIAL SOCKET FOR PERSONS WITH TRANSFEMORAL AMPUTATION: GAIT PARAMETERS AND CLINICAL ASSESSMENT OF A CASE SERIES
Open Access
- 4 January 2021
- journal article
- Published by University of Toronto Libraries - UOTL in CANADIAN PROSTHETICS & ORTHOTICS JOURNAL
- Vol. 4 (1)
- https://doi.org/10.33137/cpoj.v4i1.36252
Abstract
BACKGROUND: 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. OBJECTIVE: To assess the effects of HySS in terms of comfort, hip range-of-motion and gait parameters. METHODOLOGY: Three persons with transfemoral amputation were tested first using their usual ICS and then after one month of continuous use of HySS. FINDINGS: 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. CONCLUSION: These findings suggest that the use of HySS could allow improvements for prosthetic use. Layman’s Abstract This case series describes the effects of a subischial socket combined with a hypobaric suction suspension system for persons with transfemoral amputation. This socket has the proximal trim line located distally to the ischial tuberosity and it does not interact with the pelvis. The results have shown that this socket may improve the overall prosthetic comfort, hip range of motion and some gait parameters compared to the conventional ischial containment socket. Article PDF Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/36252/28095 How To Cite: Pellegrini R, Denza G, Brunelli S, Zenardi D, Imperio M, Vannozzi G, Traballesi M. The hybrid subischial socket for persons with transfemoral amputation: gait parameters and clinical assessment of a case series. Canadian Prosthetics & Orthotics Journal. 2021;Volume 4, Issue 1, No.9. https://doi.org/10.33137/cpoj.v4i1.36252 Corresponding Author: Stefano Brunelli, MD Fondazione Santa Lucia, Scientific Institute for Research, Hospitalization and Health Care, Rome, Italy. E-Mail: s.brunelli@hsantalucia.it ORCID ID: https://orcid.org/0000-0002-5986-1564Keywords
This publication has 24 references indexed in Scilit:
- Effect of walking speed on gait sub phase durationsHuman Movement Science, 2015
- Transfemoral interfaces with vacuum assisted suspension comparison of gait, balance, and subjective analysis: Ischial containment versus brimlessGait & Posture, 2014
- Transfemoral sockets with vacuum-assisted suspension comparison of hip kinematics, socket position, contact pressure, and preference: Ischial containment versus brimlessJournal of Rehabilitation Research and Development, 2013
- Use of gait summary measures with lower limb amputeesGait & Posture, 2012
- An instrumented timed up and go: the added value of an accelerometer for identifying fall risk in idiopathic fallersPhysiological Measurement, 2011
- Energy cost of walking in transfemoral amputees: Comparison between Marlo Anatomical Socket and Ischial Containment SocketGait & Posture, 2011
- Kinetic asymmetry in transfemoral amputees while performing sit to stand and stand to sit movementsGait & Posture, 2011
- Reliability of Outcome Measures for People With Lower-Limb Amputations: Distinguishing True Change From Statistical ErrorPTJ: Physical Therapy & Rehabilitation Journal, 2011
- Improvements in hip- and pelvic motion for patients with osseointegrated trans-femoral prosthesesGait & Posture, 2011
- Slowness in elderly gaitExperimental Aging Research, 1990