The knee is complex and susceptible to many types of injuries—especially in athletes. The body's largest joint, the knee can receive fractures, sprains, tears, dislocations, and other injuries if athletes do not engage in proper form and technique or do not wear the correct equipment for their sport. Knowing what knee injuries you are at risk for in your sport of choice is an important part of protecting yourself.
Knee hyperextension symptoms will vary depending on the individual athlete’s body, the method of hyperextension, and the overall strength of the knee joint.
Symptoms of a dislocated kneecap vary depending on injury cause and the extent of the damage. Learn the primary symptoms athletes may experience.
Symptoms of an MCL tear of the knee may appear immediately or get worse in the days following an injury. MCL sprains or tears may be accompanied by other knee injuries, such as a meniscal tear.
The symptoms of a meniscal tear depend on the individual, tear location, and extent of the damage.

Runner’s knee, or patellofemoral pain syndrome, can cause pain at the front of the knee and other symptoms. Read more about runner’s knee symptoms and what activities typically cause them.