Pes anserinus bursitis
Pes anserinus bursitis refers to symptomatic inflammation of the pes anserinus bursa which is located at the medial aspect of the knee (at the level of the joint space) deep to the pes anserinus tendons.
The anatomic location is the key to making the diagnosis. The actual signs are like bursitis anywhere else in the body.
- increased fluid within the bursa
- thickened bursal wall
- surrounding tissue oedema
- abnormal wall / surrounding tissue enhancement
With the correct history of pain many clinicians will diagnose pes anserinus bursitis on the presence of increased bursal fluid alone.