The knee is a modified hinge joint. The surfaces of the joint are covered with cartilage which provides a smooth, slippery surface for painless movement. In addition the knee contains several soft tissue structures including menisci and ligaments.

These structures can all be injured and cause pain, instability and loss of function. Diagnosing such injuries is usually made with plain x-rays and an MRI scan (as seen on the right).

Treatment involves having an arthroscopy, which is a “key hole” operation performed as a day case.

The following injuries can be treated arthroscopically:

  • Meniscal tears
  • Damaged cartilage
  • Loose bodies
  • Ligament injuries

The anterior cruciate ligament is the ligament most frequently injured during sports and skiing etc. Sometimes people are aware of a “pop” when the ligament snaps. After the pain and swelling resolves people often notice that the knee feels unstable and tends to give way. The initial treatment is a course of physiotherapy directed at muscle strengthening. If physiotherapy does not restore sufficient stability ligament reconstruction will be necessary.

MRI scan of the knee showing a front view MRI scan of the knee showing a side view