Most prosthetic legs cannot get wet, making showering a daily fall risk

The vast majority of everyday prosthetic legs are not waterproof. Electronic components (microprocessor knees, powered ankles), metal joints, and socket liners degrade when exposed to water, soap, and humidity. This means that showering -- a basic daily activity -- becomes a significant fall risk and logistical challenge for millions of amputees. Users must either remove their prosthesis and hop or use a shower chair (risking falls on wet surfaces), or purchase a separate dedicated 'shower leg' that costs thousands of dollars and is often not covered by insurance. Swimming, water sports, and even walking in rain require yet another specialized waterproof prosthesis. This matters because water exposure is unavoidable in daily life, and the inability to safely shower independently is a profound loss of dignity and autonomy. The problem persists because prosthetic component manufacturers prioritize walking performance and durability on dry land. Waterproofing adds cost, weight, and design complexity. Since insurance typically covers only one prosthesis at a time, the cost of a second water-safe device falls entirely on the patient.