Your deltoid muscles start near your clavicle and scapula. The end of the muscles, or insertion point, attaches near your humerus. There are other muscles and joints that support the deltoids, too.

The shoulder muscles play a large role in how we perform tasks and activities in daily life. ... Pectoralis major is a large, fan-shaped muscle stretching from your collarbone to mid-chest.

The sternocleidomastoid is a large muscle near the front of the neck. It extends from just under the ear and jaw down to the collarbone. A person with sternocleidomastoid pain might notice trigger ...

Collarbones have many ligaments and muscles attached to them, so breaking one can require a rigorous physical therapy routine. Tactical Fitness: The Best Way to Do Push-ups After a Collarbone ...