The proximal hamstring origin is an obliquely-oriented oval on the lateral ischial tuberosity with the long axis ∼3.5 cm to 4.0 cm length, short axis ∼3.0 to 3.5 cm width, and the surface area ∼10 cm2.2, 3, 4, 5 The conjoint tendon origin, consisting of the long head of biceps femoris and semitendinosus, is medial and posterior/superficial to the semimembranosus origin, which is lateral and anterior/deep to the conjoint tendon. Most literature describes the origin as a combined whole single