Deltoid Muscle Anatomy and Innervation

Front

Anterior Deltoid (origin)

Back

lateral third of the clavicle

Front

Anterior Deltoid (insertion)

Back

deltoid tuberosity

Front

Anterior Deltoid Nerve

Back

Axillary nerve (C5-C6)

Front

Middle Deltoid (origin)

Back

acromion process

Front

Middle Deltoid (insertion)

Back

Deltoid Tuberosity

Front

Middle Deltoid nerve

Back

Axillary Nerve (C5-C6)

Front

Posterior Deltoid (origin)

Back

spine of scapula

Front

Posterior Deltoid (insertion)

Back

deltoid tuberosity

Front

Posterior deltoid (nerve)

Back

Axillary nerve (C5-C6)

Front

Biceps brachii (short head origin)

Back

coracoid process of scapula