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Pes anserinus

- Discussion:
    - pes arserinus is final common tendinous insertion of sartorius, gracilis,
           & semitendinosus along proximal medial aspect to tibia;
           - these muscles serve as flexors & internal rotators, & help protect knee
                  against rotary as well as valgus stress;
    - anatomically this is the first (superficial) layer of the medial compartment;
    - deep bursa: deep to pes arserinus insertion;
           - rarely affected w/ bursitis (dx of exclusion)
           - 1st r/o chondral frx, meniscal tear, or osteonecrosis

Pes anserinus transposition for patellar dislocations. Long-term follow-up results.