I can't say that the medications did it, those ruptures, but I think there is a connection. I had NO injury or fall. For about 6 years, my walking was terrible.
I limped and could not walk on sand at all. My former foot doc. didn't dx it right. He didn't do an MRI, which to this day really makes me angry

Two docs wanted to do tendon transfers, three incisions in the ankle. An ortho said No and so did my PCP, as I have PN.
Last year it started to get better. I have no explaination on why. Evidently I did heal without intervention. It just hurt for many years.
Somehow doctors fail us, in adequately informing us of possible dangers. B12 did more for me than all those doctors did. I got on the vitamin bandwagon. I read alot of posts here about that also. After about 1 year on these vitamines is when I started to get better.
I hope you are OK this day. The more information we get, the better we do as patients. Take care. ginnie