Assessment of PCL Injuries

Assessment procedure for helping to diagnose a posterior cruciate ligament injury.

 

Assessment for PCL injury

Palpation

  • The therapist will usually start with observing and palpating the knee joint for signs of injury.
  • A PCL injury will often result in lots of swelling.

Hyperextension

  • Over straightening or hyperextending the knee may be painful in PCL injuries

Posterior drawer test

  • The posterior drawer test involves pushing the Tibia (shin bone) backwards whilst the knee is bent.
  • A positive result is recorded if the Tibia moves back further than on the uninjured side.

Posterior sag test

  • The posterior sag test is performed by raising the lower leg to a horizontal position, with the knee bend.
  • The therapist observes if the Tibia drops down, forming a sag or dent at the front of the upper shin.
  • Always compare to the other knee.