Real-World Testing of the Self Grasping Hand, a Novel Adjustable Passive Prosthesis

Real-World Testing of the Self Grasping Hand, a Novel Adjustable Passive Prosthesis: A Single Group Pilot Study

O’Brien, Lisa (Monash University; Swinburne University of Technology)
Montesano, Elena (Caulfield Hospital)
Chadwell, Alix (University of Salford)
Kenney, Laurence (University of Salford)
Smit, G. (TU Delft Medical Instruments & Bio-Inspired Technology)

2022

(1) Background: This study investigated the feasibility of conducting a two-week “real-world” trial of the Self Grasping Hand (SGH), a novel 3D printed passive adjustable prosthesis for hand absence; (2) Methods: Single-group pilot study of nine adults with trans-radial limb absence; five used body-powered split-hooks, and four had passive cosmetic hands as their usual prosthesis. Data from activity monitors were used to measure wear time and bilateral activity. At the end of the two-week trial, function and satisfaction were measured using the Orthotics and Prosthetics Users’ Survey Function Scale (OPUS) and the prosthesis satisfaction sub-scales of the Trinity Amputations and Prosthesis Experience Scale (TAPES). Semi-structured interviews captured consumer feedback and suggestions for improvement; (3) Results: Average SGH wear time over 2 weeks was 17.5 h (10% of total prosthesis wear time) for split-hook users and 83.5 h (63% of total prosthesis wear time) for cosmetic hand users. Mean satisfaction was 5.2/10, and mean function score was 47.9/100; (4) Two-week real-world consumer testing of the SGH is feasible using the methods described. Future SGH designs need to be more robust with easier grasp lock/unlock.

prosthetic
passive
adjustable
hand
3D printing
trans-radial

http://resolver.tudelft.nl/uuid:ed4b0862-87c0-4198-8638-6a3374f5bf09

https://doi.org/10.3390/prosthesis4010006

Prosthesis, 4 (1), 48-59

Institutional Repository

journal article

© 2022 Lisa O’Brien, Elena Montesano, Alix Chadwell, Laurence Kenney, G. Smit