Yesterday i was jumping rope and doing some martial arts moves, so once when i jumped and landed on my leg then in my left knees i felt a cramp. After that i am not able to walk properly...feeling pain in my knees...also i am not able to make my leg straight...so do i need to take xray for that or it will be cured in few days???   From yesterday night i applied volini 3-4 times and covred the knees with craps bandage.....so will this help or do i need to apply ice instead of volini....till now no swelling is there and i am able to walk but not properly but when i make my leg straight i feel little pain on knees...