One thing to keep in mind, is that if you really did hit a nerve...you'd know it immediately. The pain would be instant and unbearable. What often happens is that you inject "near" a nerve...then as the PIP and inflammation spreads to the adjacent areas...the nerve starts to get really inflamed causing major soreness and difficultly walking, etc. Just something to keep in mind. If you are injecting correctly, you really should be nowhere near any major nerves. I want to say that member Muskate has an e-book on proper injection technique.