Assessing Outcomes With Microprocessor Knee Utilization in a K2 Population

Inclusion Criteria: * Unilateral transfemoral or knee disarticulation amputation * Received prosthesis between 4 - 24 months prior * Currently uses prosthesis * K2 ambulator status * Able to speak English or Spanish language * Age ≥ 65 years at Baseline Assessment (one month after enrollment) * Minimum Socket Comfort Score (SCS) of 6/10 Exclusion Criteria: * Upper limb involvement * Individuals ≥ 275 lbs * Unable to provide informed consent * History of acute or chronic residual limb breakdown * History of 2 or more socket adjustments or replacements in the past 6 months * Amputation of the contralateral limb * Active malignancy * Rapidly declining health status resulting in reduced activity in the past 6 months, as determined by patient's clinician and confirmed by Clinical \& Scientific Affairs personnel * Patient unable or unwilling to follow study procedures * Pregnant women, institutionalized persons, and children