Upper-limb prosthetic abandonment exceeds 44% despite decades of innovation

Despite billions invested in upper-limb prosthetic R&D -- from myoelectric hands to pattern-recognition control systems -- abandonment rates remain stubbornly above 44%, with some studies reporting 50%+. The most common reason (81% of cases) is limited functionality: the prosthesis cannot perform the everyday tasks the user needs. Myoelectric hands require intense concentration to control, overheat the residual limb, weigh significantly more than a natural hand, and break frequently. Users report that the cognitive burden of operating the device outweighs its utility -- it is faster and easier to do tasks one-handed. This matters because each abandoned device represents $40,000-$100,000 of wasted healthcare spending, months of rehabilitation time, and a patient who gave up on a tool that was supposed to restore independence. The problem persists because prosthetic hand design optimizes for engineering metrics (grip force, degrees of freedom) rather than user-centered metrics (cognitive load, thermal comfort, task completion speed). The feedback loop between user experience and product design is broken: prosthetists fit devices, but manufacturers rarely observe how patients actually use (or stop using) them in daily life.