Cyriax Release Maneuver is used to assess which condition?

• A. Carpal Tunnel Syndrome
• B. Scoliosis
• C. Thoracic Outlet Syndrome
• D. Rotator Cuff Tear

Answer: (C)

The key idea is testing for compression of the neurovascular bundle as it passes through the thoracic outlet. The Cyriax release maneuver provokes symptoms by moving the shoulder girdle and neck into positions that narrow the outlet space where the brachial plexus and subclavian vessels travel, and then notes whether symptoms are reproduced and relieved when the compression is released. A positive response points toward thoracic outlet syndrome, because it reflects dynamic entrapment of the neural or vascular structures in that region rather than a primary joint or tendon problem. Carpal tunnel syndrome involves compression at the wrist and is assessed with different tests; scoliosis is a spinal deformity; rotator cuff tears produce shoulder weakness and localized impingement/rotator cuff signs rather than neurovascular symptoms from the thoracic outlet.