VA Office of Research and Development
Long-term above-knee prosthesis users are at an increased risk of developing secondary musculoskeletal conditions compared to the general able-bodied population. One secondary physical concern is low back pain (LBP), for which the development is not entirely understood, but in above-knee prosthesis users it is believed to relate to asymmetries and compensations that are typically demonstrated and required to stand and walk. Understanding spinal motion and compensations will enhance our knowledge of the factors contributing to LBP, and possibly lead to the development of new prosthetic and therapeutic interventions to prevent or alleviate LBP, thereby improving mobility and quality of life for prosthesis users.
The purpose of this study is to investigate and compare the effects of the standard ischial containment (IC) socket to a sub-ischial (SI) socket design on the spinal and pelvic motions and leg length (LLD) discrepancies of transfemoral prosthesis users. Data will be collected from 2 groups of transfemoral prosthesis users (15 SI socket wearers and 15 IC socket wearers) and a group of 15 able-bodied (AB) control participants. Gait and standing analyses will be conducted on each participant using a marker based motion capture system. Prosthesis users will wear their own conventional sockets for…
Inclusion Criteria: For all participants: * Ability to complete the experimental protocol without undue fatigue or health risks * Low Back Pain scale assessment (0-10) less than 4 (activities of daily living or quality of life not impacted) In addition for persons with lower limb amputation: * Prosthesis user for a minimum of 2 years with their current socket design * Good fit with either an ischial containment (IC) or sub-ischial (SI) socket * Good skin integrity on their residual limb upon visual inspection * Does not require the use of assistive devices to walk Exclusion Criteria: * P…
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