US posterior hip showing gluteus maximus and quadratus femoris and other external rotators in transverse plane

This transverse ultrasound image shows the quadratus femoris muscle (long axis view) in the ischiofemoral space between the ischial tuberosity/hamstring tendon complex origin and the lesser trochanter.

QF: quadratus femoris muscle; IT: ischial tuberosity; LT: lesser trochanter; CJ: conjoint tendon; SM: semimembranosus tendon; Gmax: gluteus maximus muscle; OBe: obturator externus muscle; dotted ellipse: sciatic nerve.
Left side of image: lateral; right side of image: medial.

Courtesy of Mederic Hall, MD and Sathish Rajasekaran, MD.

Graphic 106943 Version 2.0

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