obturator externus

An adductor muscle that attaches to the femur and the pelvis. In humans, the obturator externus muscle is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis. It is sometimes considered part of the medial compartment of thigh, and sometimes considered part of the gluteal region. [WP,generalized]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the obturator externus is

An adductor muscle that attaches to the femur and the pelvis. In humans, the obturator externus muscle is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis. It is sometimes considered part of the medial compartment of thigh, and sometimes considered part of the gluteal region. [WP,generalized]. The atlas records it as a muscle at the organ scale in the human body.

Where the obturator externus is

It sits in the pelvis and trunk, within the muscular 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 obturator externus connects to

The atlas records 9 typed relationships for it, across 5 kinds of connection. part of hip, musculature of hip and musculature of pelvic girdle.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the obturator externus. 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 M. obturator externus, external obturator, external obturatus, externus obturator, musculus obturatorius externus and obturator externus, and 2 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001368, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: hip, musculature of hip and musculature of pelvic girdle.
• A kind of: adductor muscle, obturator muscle and pelvic complex muscle.
• Attaches to: greater trochanter.
• inserts into: femur.
• originates from: obturator foramen.

Questions

Where is the obturator externus?

It sits in the pelvis and trunk, within the muscular 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 obturator externus connect to?

Part of: hip, musculature of hip and musculature of pelvic girdle.

Is the obturator externus 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.