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Medial Patellofemoral Ligament (MPFL) Reconstruction

  • A dislocated kneecap (patella dislocation) can occur suddenly due to a traumatic knock to the knee
  • In some individuals a patella dislocation can happen without significant injury due to various anatomic variations
  • A person with a patellar dislocation is unable to stand and usually collapses to the ground
  • The patella gets “stuck” on the outside of the knee. Sometimes it may pop back by itself, otherwise it will need to be put back in hospital, under sedation
  • After a patellar dislocation has occurred, you may need surgery, especially if it keeps happening
  • This is because the ligament that normally holds the patella in place (the medial patello-femoral ligament or MPFL) has not healed
  • The surgery (MPFL reconstruction) is usually done under general anaesthetic and involves an overnight stay in hospital
  • The procedure involves creating a new stabilizing ligament by using your own hamstring tendon
  • The new ligament holds the patella in place and prevents further dislocations
  • After surgery for a patella dislocation a brace and crutches are usually required for a few weeks, and good rehabilitation (physiotherapy) is needed for the best results