This study tests whether a vibration-based feedback device (Suralis) can reduce phantom limb pain in people with lower-leg amputations over 3 weeks. Participants wear the device daily and report pain levels, walking ability, and quality of life - with no known risks, as it's a CE-certified medical device. If pain improves, the study team will help participants apply for insurance coverage to keep using the system long-term. The goal is to offer a simple, non-drug option that may help ease chronic pain and improve daily function for amputees. Participation is voluntary and can be stopped anytime without affecting medical care.
Unilateral major lower-limb amputation (transtibial or transfemoral)
Presence of persistent phantom limb pain, defined as daily pain intensity ≥ 3/10 on the Visual Analog Scale (VAS) during the baseline period
Regular daily use of a prosthetic limb (minimum 4 hours/day)
Adequate German language proficiency to understand and complete study questionnaires and follow study procedures
Unstable wound or skin condition at the residual limb
Inconsistent prosthetic use (less than daily or < 4 hours/day)
Poorly fitting or non-functional prosthesis (as determined by study team)
Incapacity to provide informed consent (e.g., due to cognitive impairment or severe psychiatric illness)