Qualitative needs assessment for the development of a smart thumb prosthesis

To critically explore experiences following thumb amputation and delineate elements of an ideal thumb prosthesis from the end user perspective.

A qualitative study was undertaken with end user stakeholder groups, which included persons with a thumb amputation, rehabilitation professionals, and prosthetists. Analysis proceeded in line with conventional content analysis.

Six patients with traumatic thumb amputation and eight healthcare providers (HCPs) were interviewed. Six themes were identified. The first theme discussed the impact of losing a thumb upon function, occupational activities, and mental wellbeing. The second theme reflected the idiosyncratic nature of thumb amputees, including their goals and nature of injury. The third theme stressed the costs associated with obtaining a thumb prosthesis. The fourth theme explored patient frustration and causes of device abandonment. Theme five summarized opinions on currently available thumb prostheses, and theme seven was the ideal design for a thumb prosthetic, including sensory elements and materials.

Representative data from stakeholders mapped the current status of thumb prostheses. Preferences for an ideal thumb prosthesis included a simple, durable design with the ability to oppose, grasp, and sense pressure. Affordable cost and ease of fit emerged as systemic objectives.