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 ...

Thoracic outlet syndrome (TOS) is the entrapment of the upper extremity neurovascular structures from the cervical region to the axilla, causing pain, paresthesia, weakness, numbness, swelling, coldness, tingling, and discoloration. It is classified in several ways.

Aug 18, 2022 · PMS and TOS, though similar, have one primary differentiator: headaches. Those suffering from TOS tend to report more headaches and even more neck pain than those with PMS. Those who suffer from both tend to have more trapezius and axillary pain.

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.

Apr 10, 2023 · Thoracic outlet syndrome (TOS) manifests when pressures in the thoracic outlet increase to the point of impinging vessels or nerves. These pressures can result from several anatomical abnormalities, such as the thoracic ribs or space-occupying lesions, including tumors or …

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. We report 100 PM tenotomy operations in these patients.

Mar 7, 2025 · When thoracic outlet pressures rise to the point that they impinge on arteries or nerves, the condition known as thoracic outlet syndrome (TOS) occurs. Several structural anomalies, including the thoracic ribs or space-occupying lesions, such as tumors or cysts, can cause these pressures.

Oct 9, 2024 · Pectoralis Minor Syndrome (PMS) is an often overlooked condition that can cause significant pain and dysfunction in the shoulder and arm. Despite being less known than other musculoskeletal issues, PMS plays a crucial role in many …

thoracic outlet syndrome (TOS). Below the clavicle, it occurs under the pectoralis minor muscle (PMM), producing pector-alis minor syndrome (PMS). For brachial plexus compression, it is common for both thoracic outlet and pectoralis minor areas to be involved simultaneously in the same patient, an example of the double crush syndrome [1].

May 25, 2023 · Vascular and/or neurological signs and symptoms can characterize TOS. However, a similar infrequent vascular condition, pectoralis minor syndrome (PMS), is characterized by axillary vein obstruction by compression from the pectoralis minor muscle inferior to the clavicle (Figure 6).