my name is clem and I am 59 years old. I was told by ny doctor that my cartridges are worn out. He wants to do knee surgery. I dont want to have the surgery. Is there any way I can get the knee gel injection in the knee and it do me any good. I go back to my doctor on Thursday of thei week. I dont want surgery but Im tired limping and hopping on my knee. what advice can you give me. I am so afraid of the knee surgery.