Had many ultrasound guided nerve blocks injected into inner ankle today. no numbness. in past, no numbness from femoral nerve block or epidural. why?

Not injected near: The nerve, or the solution used was either too dilute or not efficacious for a few reasons. Most local anesthetics always work in normal tissues when injected next to the nerve.

Multi-causal answer: Three injections in 6-8 weeks. Possibilities include poor technique, old solution, inefficient anatomic or tissue absorption. Failure to achieve desired response could be your "normal" response. Give it a week or two then change Anesthesiologist. Make sure appropriate imaging studies have been performed. Consider injection by a neurologist or neurosurgeon. Injection may not be correct Rx