An ACL tear occurs when the ACL ligament connecting the femur and tibia becomes injured. It is often painful and causes the knee to feel unstable. An ACL tear most often occurs during athletics, but can also occur because of sudden stops, landing awkwardly, or trauma. Most often the patient will experience a popping sound at the moment the ACL tear occurs. Surgery and rehabilitation are commonly required.
This condition is a blood clot that forms in a vein deep inside the body. This type of clot most commonly develops in the legs. This condition is dangerous, because the clot can break free and travel through the bloodstream to the lungs.
Osteoarthritis, also called degenerative arthritis, is a gradual breakdown of cartilage in the joints. Cartilage is a tough, flexible connective tissue that protects the ends of bones in the joints. Osteoarthritis is common in the knees because the knees bear the weight of the body. Osteoarthritis of the knee can severely impact a person's lifestyle.