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Corpus: Psoas minor muscle

1. Definition

The psoas minor muscle is a skeletal muscle that is part of the inner hip musculature. It is inconsistently developed in humans, being present in about 50 % of individuals. Some authors consider the psoas minor muscle to be part of the iliopsoas muscle.

2. Course

The psoas minor muscle originates from the 12th thoracic vertebra and the 1st lumbar vertebra. It extends with a long tendon, inserting into the fascia of the psoas major muscle, particularly into the iliopectineal arch.

3. Innervation

The psoas minor muscle is innervated by the anterior branches of the lumbar nerves I-III.

4. Function

The psoas minor muscle has limited functional significance when acting alone. If present, it may provide some support to the iliopsoas muscle.

Stichworte: Corpus, Muscle, Pelvis, Spine

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Isabel Keller
DocCheck Team
Natascha van den Höfel
DocCheck Team
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Letzter Edit:
21.08.2024, 08:02
19 Aufrufe
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