Orthopaedics  |  Osteo Knee Pathway - Xray Knee


Osteo Knee Pathway - Xray Knee

A Knee Xray (weight-bearing AP and lateral) is required before referring the patient for consideration of a Total Knee Replacement.

  • As patients require an xray within 6 months of their surgery if a recent xray confirming OA exists it is not necessary to repeat this.
  • Always attach the knee xray report to any referral as reports and films are not routinely available at grading.


An Urgent Knee Xray is required for:


Other indications for Knee Xray:

  • Pain and functional impairment are significant.
  • Pain when the patient has had a previous knee joint replacement.
  • Recurrent presentation with same symptoms.
  • Suspected bone malignancy (primary or metastatic).
  • Knee locking, restricted movement, or deformity.


Xray signs of osteoathritis:

  • Joint space narrowing
  • Subchondral sclerosis
  • Subchondral cysts
  • Osteophytes

Note that when a septic arthritis or osteomyelitis is suspected or where there is a haemarthrosis then refer urgently to the Orthopaedic Registrar on call.

Last updated : Tuesday, October 03, 2017
Next review date : Wednesday, October 03,2018

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