Common Types of Knee Pain
ACL Injury (anterior cruciate ligment sprain)
An ACL injury is common in contact sports and especially those that are combined with sudden change of direction such as soccer or football. Often it will not occur in isolation but in most cases occur with damage to other structures within the knee such as the cartilage or ligaments.
Medial Meniscus Tear or Torn Meniscus
A medial meniscus tear or torn meniscus is a tear to the semi-circular shock absorbing cartilage in the knee joint. This causes pain on the inside of the knee. It is commonly injured through direct impact to the outside of the knee in contact sports or twisting but can also occur in older athletes through degeneration.
Medial Ligament Sprain (MCL injury)
An MCL injury is a tear of the ligament on the inside of the knee, usually a result of twisting or direct impact. Symptoms include pain and swelling on the inside of the knee, often along the joint line.
Lateral Ligament Sprain (LCL injury)
A lateral ligament sprain is an injury involving a tear to the ligament on the outside of the knee and is most likely following a direct blow to the inside of the knee or twisting.
Osteoarthritis is caused from wear and tear on the knee joint. Pain will be a deep aching type knee pain (usually the inner knee) that is worse after exercise. Stiffness in the joint is common, particularly in the mornings. There may also be swelling in the knee and sometimes a clicking or cracking noises when moving the knee.
A patella dislocation is when when the kneecap dislocates outside of its normal position, usually round the outside of the knee. It can also be partially dislocate, called a subluxation. Pain will be felt immediately at the time of injury. There is likely to be swelling in the knee joint and there will be an obvious displacement of the kneecap.