Weight bearing knee belt (for knee osteoarthritis and acl injury) osteoarthritis is a type of joint disease that results from breakdown of join cartilage and under lying bone . the most common symptoms are joint pain and stiffness. knee osteoarthritis is the most common type of osteoarthritis and cause of disability. osteoarthritis is the most common cause of macula skeletal pain and disability in the knee joint. in the knee joint the end of the femur and tibia are covered in smooth articulate cartilage. between the two bones sits a second type of cartilage called menisci, which act as cartilage shock absorber pads, joint fluid also adds lubrication to the knee joint oa starts as the lack or loss of this articulate cartilage and then progresses into involvement with the surrounding bone, tissue and synovial fluid. in oa cartilage may have areas of partial thickness loss or complete loss of surface cartilage resulting in areas of exposed bone. isolated cartilage loss may be a result of isolated trauma or it may be a result of chronic wear and tear of the joint. in present time knee braces are available for treatment of medial compartment osteoarthritis (osteoarthritis on the inside of the knee joint) . these braces work by unlading the medial (inside) portion of the knee. these braces need to be custom made and therefore can be expensive. but weight bearing knee belt work by unloading both portion (lateral and medial inside) of knee joint and it very cheap also. weight bearing knee belt is very useful and successful device to treatment of knee osteoarthritis without surgery. it is helpful to treatment of anterior cruciate ligament (acl) injury without surgery also. weight bearing knee belt is very easy to use.