<s>[INST] I have a meniscus tear in my left knee. Almost torn in half through the centre and a small tear on my inner knee. Then bottom of my left foot has started buzzing/tingling. Knee, lower leg and ankle can swell with too much walking. I am guessing that a nerve is being affected. Will go to physio to confirm. [/INST] Hello. Usually meniscus tear will cause pain locking and swelling around the knee but not swelling of the lower leg and ankle and bottom of the foot. From the signs that you are giving it looks like a radiated sciatica pain maybe from lower back. Perhaps your walk and standing position is modified from your left knee problem and your back is not balanced, causing the buzzing/tingling sensation. I would suggest focusing and lower back consulting a neurology specialist maybe MRI of lower back to exclude the sciatic nerve compression. IF MRI is ok than see an orthopedic surgeon for possibly a knee arthroscopy procedure for meniscus tear. </s>