Axillary Nerve

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Axillary nerve roots: C5 & C6¹

Motor Innervation

Axillary n. Muscle Innervations
Muscle	Origin	Insertion	Innervation	Action

Muscle	Origin	Insertion	Nerve	Action
Anterior Deltoid	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#origin	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#insertion	?var:ref-deltoid-muscle-anterior.nerve	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#action
Lateral Deltoid	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#origin	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#insertion	?var:ref-deltoid-muscle-lateral.nerve	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#action
Posterior Deltoid	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#origin	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#insertion	?var:ref-deltoid-muscle-posterior.nerve	/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Intrinsic Shoulder Muscles/deltoid_muscle.html#action

Sensory innervation

Dysfunction

• Fractures at the Surgical Neck most commonly cause Axillary Nerve damage².

References

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.

2.

Dutton M. Dutton’s Orthopaedic Examination, Evaluation, and Intervention. 5th ed. McGraw Hill Education; 2020.