It is a cause of chronic knee pain and weakness ("pes anserine bursitis").

An occurrence of pes anserine bursitis commonly is characterized by pain, especially when climbing stairs, tenderness, and local swelling.

Pes anserine bursitis is a common inflammatory condition of the anserine bursa.

Inflammation of the bursa is known as pes anserine bursitis and the muscles of guy ropes may also get involved.

One of the many conditions that can disrupt the use of the sartorius is pes anserine bursitis, an inflammatory condition of the medial portion of the knee.

Pes anserine bursitis is an inflammatory condition of the medial (inner) knee at the anserine bursa, a sub muscular bursa, just below the pes anserinus.