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.

Aug 18, 2022 · PMS is most similar to NTOS because both cause compression to the brachial plexus nerves. NTOS is when compression occurs above the clavicle and PMS is typically when compression occurs below the clavicle.

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, ...

Sep 24, 2023 · Pectoralis minor syndrome (PMS) is a type of thoracic outlet syndrome (TOS) in which the brachial plexus is compressed under the pectoralis.

The diagnostic process for Neurogenic PMS is pretty much identical to the one for NTOS especially since they often coexist. To read the full description for diagnosis of NTOS, click here. The main differences in the diagnostic workup between NPMS and NTOS are outlined below.

Above the clavicle, compression occurs in the scalene triangle, bordered by the clavicle, first rib, and scalene muscles, producing thoracic outlet syndrome (TOS). Below the clavicle, it occurs under the pectoralis minor muscle (PMM), producing pector-alis minor syndrome (PMS).

Treatment for Neurogenic PMS is extremely similar to that of NTOS especially since they often coexist and are treated simultaneously. To read the full description for treatment of NTOS, click here.

Jun 1, 2014 · The large majority of patients have brachial plexus compression giving rise to neurogenic TOS (NTOS) and/or neurogenic PMS (NPMS). Much less common is subclavian and axillary vein obstruction giving rise to venous TOS (VTOS) or venous PMS (VPMS).

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).

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 …