Q. Does the tradition or prohibition not to wear the shoes of the deceased apply also to tennis shoes, rubbers or overshoes? (See question above). Does it also apply to prosthetic legs or feet?

A. Nitei Gavriel (Avelus 1: 132: 8) quotes Kores Habbris and Mishmeres Sholom that maintain one should avoid any kind of footwear from the departed including overshoes, since there is an issue of sakana or personal danger involved in wearing them. In case of need one can donate them to the needy.
Horav Shlomo Miller’s Shlit’a opinion is that one may wear the galoshes and overshoes of the deceased.
The Rov is also lenient on prosthetic legs or feet. (See similar ruling by Chashukei Chemed, Yebamos 104a).

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a