Lesser sciatic notch

Definition

The lesser sciatic notch is a deep, narrow depression located on the posterior surface of the ischium, one of the bones that forms part of the human pelvis. It serves as a passageway for structures such as nerves and muscles moving between the pelvic region and the thigh.

Related terms

Ischium:

The lower and back part of the hip bone, serving as one of the components of the pelvis.

Pelvic Girdle: A bony structure located in the lower part of the torso, connecting the spine to the femurs and enclosing several organs within the pelvic cavity.

Sciatic Nerve:

The longest and widest single nerve in the human body, running from the lower back through the hips and buttocks down each leg, which passes close to or through structures like the lesser sciatic notch