Hi, it sounds like u could peroneal nerve irritation which can happen w hip or knee replacements. It is a branch of sciatic nerve, located behind the fibular bone, on outside of knee. It can cause weakness of the peroneal tendons that go down the outside lower leg and ankle. It also affects top of foot and cause weakness, called foot drop in severe cases. It also can cause numbness and pain in calf, lower leg, and ankle.
I read about this when I was doing my research on hip replace. As I need to get my Rt hip replaced and I already been dealing w peroneal compression at my Lt side. for 6 yr
I'm sure when u signed the paper for this surgery, one of the risks was nerve injury. They probably dont specify which nerves.
I wish u the best! Keep us posted!
Rhonda

Not fun!
I would ask your hip surgeon about the peroneal nerve compression as one of the risk to hip surgery. I'm surexwhen u signed