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Thrombosis of the persistent median artery (PMA) is a rare cause of acute carpal tunnel syndrome (ACTS). Existence of a congenitally absent radial artery in this setting has not been described in the literature

Computed Tomography Angiography (CTA) and doppler screening were used in pre surgical planning. Open surgical decompression was achieved through the release of the flexor retinaculum in the left hand. A regimen of 100 mg of Aspirin for 3 months time was initiated to encourage clot resolution and recanalization of the thrombosed artery.

The PMA was found to be abnormally large measuring approximately 4 mm in diameter. Visible clotting off of the PMA in keeping with the doppler scans with maintenance of distal flow and was left intact with the hopes that it would recanalize over time. At the 3-month post-op review the antiplatelet therapy was ceased and the patient was …