Narrow greater sciatic notch

What it means

A narrowing of the sacrosciatic notch, i.e., the deep indentation in the posterior border of the hip bone at the point of union of the ilium and ischium.

The sacroiliac joint in the bony pelvis connects the sacrum and the ilium of the pelvis, which are joined by strong ligaments. The notch is located directly superior to the joint. This term refers to a reduction in the lateral dimension of the notch.

Rare diseases that can present with this6

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Narrow greater sacrosciatic notches · Narrow sacroiliac notch · Narrow sacrosciatic notch · Narrow sciatic notches · Narrowed greater sciatic notch · Narrowed sacrosciatic notch · Small sacrosciatic notch · Small sacrosciatic notches