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(04/09/2025) Eastern Colorado VA Geriatric Research Education and Clinical Center researchers found people with above-the-knee amputations using a bone-anchored prosthesis are at less risk of hip arthritis and walk more naturally than those using a traditional socket prosthesis. The researchers followed 19 individuals before and 12 months after implantation, generating three-dimensional models showing real-time hip muscle movement and adjustment. The models revealed increased hip abductor muscle and decreased hip flexor posterior muscle forces on the amputated side, indicating improved muscle function compared to socket prostheses. However, the researchers also found areas where targeted muscle rehabilitation could improve walking mechanics. Bone-anchored limbs are a promising alternative to socket prostheses because they provide improved range of motion and weight-bearing and can help avoid the soft tissue problems found at the interface of the socket and skin.  (Journal of Biomechanics, Mar. 8, 2025)