While riding my horse exactly one week ago, he accidentally slipped, fell, and rolled onto my right leg. I heard no cracking, popping, or tearing sounds and I experienced SEVERE and burning pain immediately. (The horse weighs approximately 1,000 lbs.) I had to walk on it for a while to get my horse back to the barn, but I immediately applied ice and was taken to the ER. The X-rays showed no fracture. I was given crutches, a knee immobilizer, a prescription for painkillers which did not alleviate the pain, and unclear directions upon release. Currently, I am using the immobilizer constantly and the crutches outside of the house. Without the immobilizer on, I cannot lift my knee or my foot. Is this serious? Also, half of my knee is numb. Any suggestions as to how long I should use crutches/ knee immobilizer? I was told by different ER nurses anywhere from a few days to two weeks. The ER doctor said if I didn't see any improvement after the first week (and also after the second week), I should see an orthopedic surgeon. I'd just like some clarification. Any help at all would be great! Thanks so much!