How long do side effects last - Evenity (leg numbness, tingling, weak)

My wife started Evenity a few months ago. The first injection was fine. She had a significant reaction to the second injection - joint swelling and a lot of pain. She was treated largely with steroids and the pain has subsided (it has been about 4 weaks). However, she still has numbess, tingling and weakness in one of her legs. We have been to a number of doctors and, most recently, she had a nerve conduction study. That study found no damage. Has anyone had an experience like this with Evenity and, if so, did the symptoms resolve (and, how long did it take).
Thanks.