yogabook / muscles / triceps coxae

The triceps coxae is the name for the three muscles that extend caudally-medially (gemellus inferior from the ischium), medially (gemellus inferior from the ischium) and cranially (obturatorius internus from the ilium) to the trochanteric fossa of the posterior femur and exorotate the thigh in the hip joint. The external ob turator does not belong to this group, although it also exorotates the thigh in the hip joint, as it originates much lower down, namely ventrally on the ischium.