Using a device that helps a Muhrim walks and keeps his legs in place

Q: My left leg is paralyzed and therefore I use a device that helps me walk since I cannot walk without it. It consists of an orthopedic shoe supported by aluminum shanks which go all the way up to the upper hip. Allah (Exalted be He) has made it possible for me to perform the rites of Umrah (lesser pilgrimage) but I assumed Ihram (ritual state for Hajj and Umrah) while I was wearing socks for the shoes. In doing this, did I do anything wrong? Please take into account that I had previously performed Umrah more than once in this same manner. (Part No. 10; Page No. 154

A: It is permissible for you to wear the above-mentioned shoes, their necessary accessories and whatever you need to wear to keep them in place. However, you must make a Fidyah (ransom) by choosing from among slaughtering a sheep that fulfils the specifications of Ud-hiyah (sacrificial animal offered by non-pilgrims) and distribute its meat among the poor, feeding six Miskins (needy persons) with half a Sa` (1 Sa`=3 kg. Approx.) which is approximately the equivalent of 1.5 kg for each one or observing Sawm (Fast) for three days.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.