Pectoralis minor syndrome (PMS) is a condition related to thoracic outlet syndrome (TOS) that results from the pectoralis minor muscle being too tight. [1] PMS results from the brachial plexus being compressed under the pectoralis minor [2] while TOS involves compression of the bundle above the clavicle. In most patients, the nerves are ...

Pectoralis minor syndrome (PMS) is defined as compression of the brachial plexus (BP) nerves, axillary artery, and axillary vein under the pectoralis minor muscle. The symptoms of PMS resemble supraclavicular compression of the neurovascular bundle, with shoulder, neck, chest, and arm pain, and paresthesia and weakness in the arm and hand.

PMS commonly accompanies NTOS and frequently exists alone. Its recognition is important as many patients with suspected NTOS can be treated successfully with a simple, essentially risk-free PM tenotomy. Should this fail, thoracic outlet decompression can …

2014年6月1日 · There are three types of TOS and PMS: neurogenic, venous, and arterial. In the past, NTOS has been subdivided into three types: true, disputed, and traumatic. True NTOS was defined as NTOS with objective findings, by imaging studies, electrodiagnostic studies, and physical findings of muscle atrophy.

2025年3月7日 · Thoracic Outlet Syndrome (TOS) is a condition caused by compression of nerves, arteries, or veins in the thoracic outlet—the space between the collarbone and ... trapezius muscle, and over the scapula, pectoralis minor syndrome (PMS) can also cause paresthesia or pain in the hands and arms. The pectoralis minor muscle, not the thoracic outlet ...

Thoracic outlet syndrome (TOS) is a neurovascular disorder caused by compression of the brachial plexus and/or the subclavian vessels. Compression may occur at three distinct areas in the thoracic outlet: retropectoralis minor space, the …

Pectoralis minor syndrome (PMS), first described in 1945, is another cause of pain and paresthesia in the upper extremity. Its symptoms mimick thoracic outlet syndrome (TOS). Between 2005 and 2007, more than 75% of patients referred to us for TOS were found to have PMS, either alone or combinated with TOS.

2024年3月1日 · Pectoralis minor syndrome (PMS) and quadrilateral space syndrome (QSS) are uncommon neurovascular compression disorders affecting the upper extremity. PMS involves compression under the pectoralis minor muscle, and QSS results from compression in the quadrilateral space—both are classically observed in overhead-motion athletes.

2022年8月18日 · Are pectoralis minor syndrome and thoracic outlet syndrome connected? PMS is considered a variation of TOS. PMS is most similar to NTOS because both cause compression to the brachial plexus nerves.

Pectoralis minor syndrome (PMS) is characterized by pain, paresthesia, weakness, and/or venous or arterial insufficiency produced by compression of the axillary neurovascular bundle by the pectoralis minor (PM) muscle. Although described over 60 years ago, the condition has been ignored by most practitioners.