Acute knee injuries are often caused by twisting the knee or falling. Sports that involve running and jumping and sudden stopping and turning, such as soccer, basketball, volleyball, tennis, and baseball, cricket, wrestling and hockey increase the risk of an acute knee injury which resulting pain.

Knee pain can be related to overuse where small stresses are repeated a large number of times without allowing adequate recovery, for example running too much too soon, or excessive jumping.

Knee pain may be the result of an injury, such as a ruptured ligament or torn cartilage. Certain medical conditions, including arthritis, gout and infection, may be at the root of your knee pain. Many relatively minor instances of knee pain respond well to self-care measures. More-serious injuries, such as a ruptured ligament or tendon, may require surgical repair.

If you have knee pain, the following medical conditions are some of the possible causes of Knee pain. There are likely to be other possible  causes. Trauma can cause injury to the ligaments on the inner portion of the knee (medial collateral ligament), the outer portion of the knee (lateral collateral
ligament), or within the knee (cruciate ligaments).

A dislocating kneecap causes acute symptoms during the dislocation, but can also lead to chronic knee pain. The most common bursa affected around the joint is just above the kneecap.  Osteochondritis dissecans (OCD) is another condition seen in adolescents due to the growth of the bone around the joint.

Knee pain is an extremely common complaint, and there are many causes. It is important to make an accurate diagnosis of the cause of your symptoms.

Knee strain, knee sprain,  prior knee injury,  knee fracture,  dislocated knee, dislocated patella, torn ligament,  fractured patella,  supracondylar femur fracture, fractured tibial plateau, upper tibia epiphysis and apophysis.