My leg is cracked

Your prosthetic is made of fiberglass and is molded using plasture of paris. Grt a thin sheet of fiberglass and resin. Most likely the thinest sheet you can get. Use gloves and follow directions on fiberglass resin can ( most auto parts stores, or boat sales, repair stores have all that you need) put on a sheet at a time (one should do it unless crack goes all the way around).make sure to let it dry completely. It will be as good as new if not better. I have a below knee prosthetic for 36 years now. I have benn very rough on all the ones I had. I didn't have the luxury of getting it fixed by a prosthetic doctor so I did repairs myself. I built and balanced my last one with parts I found at a thrift store. Lol. No kidding??? Who would have thought someone would donate their leg? I thank them for it. Anyways I hope this helps. If you have any more questions about it I will be more than happy to help if I can. Troy T.