<s>[INST] I fell on some ice, smashed my left shin juuuuust below my knee. It doesn t hurt to walk, but if I crouch, I feel a burning pins and needles sensation down the outside of my bone. I also have a numb area to the side of where I hit, and an excruciatingly painful spot/huge dent where I fell. Could I have chipped my bone or done nerve damage? [/INST] Hi going by your description, it looks that you have damaged soft tissues just below the knee. In my opinion such smashing of the soft tissues also causes damage to nerves and subsequent sensation of pins and needles along the compressed nerves. Chipped bone will give you lot of pain on walking. The painful spot / dent is there because of collection of blood in the region. Do cold compression, take anti-inflammatory painkillers for few days. </s>