Anterior knee pain

Written by Dr Sheila Strover on March 14, 2025

Anterior knee pain is a symptom-complex, dominated by 'pain in the front of the knee', particularly on prolonged sitting and navigating stairs. It may have a number of causes. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

anterior knee pain

In this 'syndrome' the pain in the front of the knee tends to be described with the flat hand because of its poor localisation, rather than pointed at with a finger.

What are the characteristics of anterior knee pain?

The characteristic pain referred to as anterior knee pain tends to be associated with:

  • forced activities - squatting, weight bearing activities, running.
  • prolonged sitting – producing stiffness, pain, or both, relieved by straightening (extending) the knee.
  • pain on getting up from sitting - the pain may be severe, then diminishes and even disappears as the individual keeps walking.
  • the “theatre sign” in some - where the individual seeks to sit at the end of any row of chairs, to allow the relief afforded by straightening the knee or even standing up,
  • problems with walking - where the person may exhibit weakness, 'giving way' of the knee, and 'catching'.  
  • stair climbing producing pain when weight is applied on the leg, when going up or down stairs.
  • snapping, popping, or crunching in the knee occurring with activity as simple as walking, that may be accompanied by pain, which may be so severe that the individual feels that the knee locks.

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Investigating anterior knee pain

Diagnosis is primarily one of exclusion, used when the cause of this type of pain has not been properly identified.

In adolescents, where the complaint is seen quite frequently, the surgeon will try to exclude biomechanical causes relating to the patella and its underlying groove, and particularly to irritation of the fat pad.

"Although the tendency is to consider AKP as a single entity in clinical practice, it is rather diverse in its etiology [cause]....A holistic approach focused on the patient as a whole, as much as a focus on the joint as the therapeutic target, is....warranted."

Riccardo D'Ambrosi et al

Routine workup for anterior knee pain may include evaluation of:

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Fat pad syndrome, Patellofemoral pain syndrome, Tibial torsion, Femoral anteversion, Patellar tilt, Patellar tilt test, Maltracking, Patellar malalignment

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Forum discussions

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