Posterior Deltoid Head

The posterior deltoid head is one of three heads of the deltoid structure, which is located at the rear of the shoulder.

Anatomy of the Posterior Deltoid Head

The Posterior deltoid head originates from the lower lip of the posterior border of the spine of the scapula, as far back as the triangular surface at its medial end

Functions of the Posterior Deltoid Head

The posterior fibers are strongly involved in transverse extension particularly since the latissimus dorsi is very weak in strict transverse extension. The posterior deltoid is also the primary shoulder hyper extensor.

Exercises for the Posterior Deltoid Head

The rear deltoid head is often the most neglected head of the deltoids. This could likely be because the rear deltoid does not experience much stress from the commonly used overhead pressing movements, which stimulates the front and side deltoid heads greatly.

Just as the front deltoid head is worked greatly by pressing actions- the rear head is often stimulated greatly during rowing exercises, as it works to bring the arm backwards.

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