Thoracic Outlet Syndrome involves compression of which structure?

Thoracic Outlet Syndrome involves compression of which structure?

• A. Brachial plexus
• B. Sciatic nerve
• C. Median nerve only
• D. Ulnar nerve only

Answer: (A)

Thoracic Outlet Syndrome centers on compression where nerves and vessels pass from the neck into the upper limb. The structure most commonly affected is the brachial plexus, the intricate network of nerves that supplies sensation and movement to the arm and hand. When the plexus is compressed, you can feel numbness, tingling, or weakness in the shoulder, arm, or hand, and sometimes vascular symptoms if a vessel is involved. The other nerves listed aren’t the typical primary structure in TOS: the sciatic nerve is in the lower body, and while the median and ulnar nerves originate from the brachial plexus, TOS is described in terms of the plexus itself being compressed rather than a single peripheral nerve.

Thoracic Outlet Syndrome centers on compression where nerves and vessels pass from the neck into the upper limb. The structure most commonly affected is the brachial plexus, the intricate network of nerves that supplies sensation and movement to the arm and hand. When the plexus is compressed, you can feel numbness, tingling, or weakness in the shoulder, arm, or hand, and sometimes vascular symptoms if a vessel is involved. The other nerves listed aren’t the typical primary structure in TOS: the sciatic nerve is in the lower body, and while the median and ulnar nerves originate from the brachial plexus, TOS is described in terms of the plexus itself being compressed rather than a single peripheral nerve.