ischial spine

A bony process projecting backward and medialward from the posterior border of the ischium. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the ischial spine is

A bony process projecting backward and medialward from the posterior border of the ischium. The atlas records it as a bone at the organ scale in the human body.

Where the ischial spine is

It sits in the pelvis and trunk, within the skeletal system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the ischial spine connects to

The atlas records 5 typed relationships for it, across 3 kinds of connection. part of ischium.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the ischial spine. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as spina ischialis, spine of ischium, spine of the ischium and the ischial spines. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0009000, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: ischium.
• A kind of: bone spine.
• originates from: coccygeus muscle, iliococcygeus muscle and superior gemellus muscle.

Questions

Where is the ischial spine?

It sits in the pelvis and trunk, within the skeletal system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the ischial spine connect to?

Part of: ischium.

Is the ischial spine the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.