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Could there be a connection between an achy knee and parathesia in the foot on same side?

I've had the knee MRI'd and no surgery was needed. Did physical therapy which has helped but I'm also experiencing "foot falling asleep" as soon as I sit down at my desk. Could there be a connection?
This is a question for the orthopedists or primary care doctor who requested the MRI. It is certainly possible that the pain you have been having in your knee is related to the sensations you are having in your foot. The nerves that provide sensation to the the foot have to move from the spinal cord in the lower back all the way down to your foot, and there are conditions in which a nerve can be pinched or irritated behind the knee. When this happens, a patient may experience neuropathic pain, similar to the "pins and needles" sensation you describe. You don't mention exactly what symptoms (or possible injury) led you to undergo a knee MRI and physical therapy, but the fact that you are having trouble with the knee does suggest that your two symptoms could be related. In this situation, the best thing to do would be to start with the orthopedists or primary care physician who evaluated you for the knee problem and ordered the MRI. He or she will be able to help determine if the information from the MRI provides an anatomic explanation for the parasthesias you describe. In addition, your doctor can do a more thorough neurologic exam of your leg to determine if there are any motor deficits, changes in reflexes, and specifically map out which parts of the foot have sensory deficits. If necessary, you can be referred to a neurologist to further evaluate you as needed. Hopefully your foot will stop "falling asleep" soon!
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under Zocdoc’s Terms of Service.

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