I have cramping an tingling down the right side of my knee to my ankle. i've had a nerve conduction test an mri to check for nerve entrap. but nothin?

Or something else: Your symptoms can sound consistent with a nerve entrapment, but there might be other causes for it. It might be in the muscle itself. Talk with your doctor and ask for additional reasons for your symptoms. Good luck!

First off,: You should realize that a nerve conduction test doesn't offer accuracy of 100%. There are false negatives results. Mri's are tricky too. Particularly with certain nerve entrapments and who is reading them. Nerves generally don't cramp, muscles do. Tingling is usually nerve related. The nerve in your case i would look for is by the fibular head and/or in the back. A good physical exam is key.