There are 3 major types of arthritis that effect a knee: osteoarthritis, rheumatoid arthritis, or post-traumatic arthritis. Pain, stiffness and swelling are the main symptoms of arthritis, which is an inflammation of the joints.
The ACL is the anterior cruciate ligament keeps the knee stable by joining the upper leg bone to the lower leg bone. Symptoms include swelling and bruising, and severe pain.
Other than ACL sprains, there are 3 other sprains that can occur in the knee. The Posterior cruciate ligament (PCL) which stabilizes the knee with the ACL, the Medial collateral ligament (MCL) that supports the knee along the inner side of leg, and the Lateral collateral ligament (LCL) that supports the outer side of the knee may be susceptible to a sprain as well.
Occurs when the calf muscle is pulled or stretched beyond its limits, the muscle tissue could just be in pain from the pull or it could become torn completely in the worst cases, or partially torn. Three muscles make up the “calf”; the Gastrocnemius, Soleus and Plantaris muscles.
Patellofemoral Pain Syndrome
Often called “runner’s knee” or “jumper’s knee”, Patellofemoral Pain Syndrome is the term used to describe pain felt around the patella or kneecap and in the front of the knee.