PCL Injury

• PCL:

  • prevents tibia from being pushed back
  • prevents femur from sliding forward
• PCL injuries - Typical presentation:

  • Audible Snap or Pop
  • Retropatellar Pain
  • Possible haemarthrosis
  • Difficulty walking down
  • Posterior sag sign
• PCL tests - Sag sign

  • bringing heel up so tibia is horizontal and gravity is pushing down
  • positive test: should see tibia sag
• PCL tests - Posterior drawer (stress) test:

  • knee at 90 degree, glide through tibial tuberosity posteriorly
  • positive test: increased laxity and soft end feel
• PCL tests:

  • posterior drawer test
  • sag sign