Introduction The Inter-scalene triangle, also known as the scalene triangle, is a region of the neck with fundamental importance to the function of the upper limbs. It is crossed by the third segment of the subclavian artery and the brachial plexus roots. The interscalene triangle is a paired structure with an apex that points superiorly…
What is a Pectoralis Minor Syndrome? Pectoralis minor syndrome (PMS) is a condition that occurs when the pectoralis minor muscle, located under the chest wall, becomes too tight and compresses the nerves and blood vessels that pass underneath it. This can cause pain, numbness, and weakness in the shoulder, arm, and hand. PMS is often…
What is a Costoclavicular Syndrome? Costoclavicular Syndrome, also known as Thoracic Outlet Syndrome (TOS), is a medical condition characterized by the compression of nerves, blood vessels, or both in the thoracic outlet. The thoracic outlet refers to the space between the clavicle (collarbone) and the first rib, through which important structures such as nerves and…
