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Knee Exam

Sounds on Knee Movement

January 1st, 2017


  • How to Assess

  • Move the knee joint passively through flexion and extension. Note whether any clicks, cracks, snaps or clunks are present.

Patellar Crepitus

  • How to Assess

  • Listen for a 'crunching' sound during passive movement of the knee.
  • Causes of Patellar Crepitus

  • Chondromalacia
  • Patellar fracture

Snapping Knee Joint

  • How to Assess

  • Listen for a sudden 'popping' sound on passive movement of the knee joint.
  • Causes of Snapping Knee Joint

  • Dislocation - tibio-fibular joint, patello-femoral joint
  • Discoid meniscus
  • Menisceal cyst
  • Snapping of tendons
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