Thoracic outlet syndrome is seen most commonly in which age group

.THORACIC OUTLET SYNDROME (TOS) It is syndrome complex due to neurovascular bundle compression in the thoracic outlet. Thoracic outlet has got two main spaces: * Scalene triangle is bound by scalenus anterior, scalenus medius and first rib. It contains subclan aery and brachial plexus. * Costoclavicular space is bound by clavicle, first rib, costoclavicular ligament and scalenus medius. It contains subclan aery and vein and brachial plexus. Causes - * Cervical rib. * Long C7 transverse process. * Anomalous inseion of scalene muscles. * Scalene muscle hyperophy. * Scalene minimus. * Abnormal bands and ligaments. * Fracture clavicle or first rib. * Exostosis. * Tumours in the region. * Brachial plexus trauma and diseases. ref:SRB&;s manual of surgery,ed 3,pg no 378