It occurs when the bursa becomes irritated and produces too much fluid, which causes it to swell and put pressure on the adjacent parts of the knee. The name comes from the Latin for goose's foot, in view of the similarity of the structure to the webbed foot of the bird. Pes anserine bursitis is an inflammation of the bursa located between the shinbone (tibia) and three tendons of the hamstring muscle at the inside of the knee. In fact they provoke excessive friction on the common tendon insertion and underlying bursa that may cause overload work for these. Overweight, biomechanical overburden, and improper posture could predispose to this pathology. Some of the accessory bands of the semitendinosus muscle emerge up to 12 cm proximal to the pes anserinus insertion 3. Pes anserine tendinopathy can hit sartorius, gracilis, and semitendinosus muscle tendons in their insertion area. The accessory bands usually insert on the gastrocnemius or popliteus fascia 3. Accessory bands from the sartorius and/or gracilis tendon are less frequent 3,4. The bursa secretes fluid to reduce friction between tissues, and also works as a cushion for. In respect to the accessory bands, the majority seem to emerge from the semitendinosus tendon 3,4. Pes Anserine (Knee Tendon) Bursitis, also known as intertendinous bursa, is an inflammatory condition of the bursa (a fluid filled sac) of the conjoined attachment of the some of the muscles that flex and internally rotate the knee on the medial aspect. The variant anatomy is of particular clinical importance since the pes anserinus serves a harvest site for tendon grafts e.g. This bursa can become inflamed and symptomatic: pes anserinus bursitis. The pes anserinus bursa lies between the pes anserinus tendons and the more deeply located semimembranosus tendon at the level of the knee joint. The sartorius tendon insertion usually has a short tendon insertion, the gracilis tendon and its accessory bands show most often (ca.80%) a band-shaped attachment, whereas the semitendinosus tendon and its accessory bands are characterized by a fan-shaped insertion (ca. The type of insertion can be classified into a short, band-shaped and fan-shaped, with fan-shaped defined as the insertion being two times the width of the tendon and band-shaped being less than two times the tendon width 3.
The pes anserinus inserts on the medial side of the tibial tuberosity below or distal to the tibial tuberosity with significant variant anatomy 3,4, comprising mostly different accessory tendinous bands appearing from the different tendons.
These tendons insert onto the anteromedial proximal tibia approximately 4 cm distal to the tibial plateau 2. They contain a small amount of fluid, and are. See here for mnemonics for remembering the three conjoined tendons that make up the pes anserinus. Bursitis Pes Anserine Bursae are small sacs that are located throughout the body, including around the shoulder, elbow, hip, knee, and heel. The three tendons that form the pes anserinus (from anterior to posterior) are 1,2: The term "pes anserinus" may also be used to describe the branching point of the facial nerve (CN-VII) within the parotid gland.
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