Pes Anserinus Structural Framework and Constituting Tendons Are Grossly Aberrant in Nigerian Population

Figure 4

(a) Photograph and (b) schematic illustration showing the internal aspect of a painted type IV pes anserinus formed by sartorius, gracilis, and semitendinosus tendons with additional participation from an accessory semitendinosus tendon and semimembranosus tendon. Note: the attachment of this pes anserinus extends beyond the superior anteromedial tibia. SA: sartorius muscle; SM: semimembranosus muscle; GM: gastrocnemius muscle; SAT: sartorius tendon; GRT: gracilis tendon; STT: semitendinosus tendon; aSTT: accessory semitendinosus tendon; SMT: semimembranosus tendon; yellow arrow indicates inferior attachment of pes anserinus.

(a)

(b)