The Piriformis (Latin for "per-shaped", so named by Spigelius in the 16th century) is one of the lateral rotators of the hip (the others being the Quadratus Femoris, Gemellus Inferior, Gemellus Superior, Obturator Externus, and Obturator Internus).

The syndrome caused by trigger points in the Sternocleidomastoids can give rise to the most varied diagnoses, as trigger points in the Sternocleidomastoid muscles are a cause of problems not only of pain and motor nature, but also proprioceptive and systemic nature.

The Pectoralis Major is a muscle well loved by those who are into fitness, but is also a complex and convoluted muscle, much abused and often hypertonic.

The anatomy of the muscle is actually more complex than it first appears because the Pectoralis Major is a structure consisting of sheets, similar to a fan- positioned deck of cards, wrapped around the origin at the armpit.

The Subscapularis is one of the most ignored external muscles of our body. But every good practitioner of trigger point therapy would do well to make friendship with this stranger.

The Subscapularis is placed between the inner face of the Scapula and the thoracic vertebrae, and is hidden by the shoulder blade and this explains why most people do not even know of its existence.

The group Psoas Major, Psoas Minor, Iliacus is another great unknown universe of our muscles, and as all beings who feel wrongly ignored, it often exacts bitter payment for this affront.