The Derby parallax technique for marking levels in thoracic spinal surgery

Abstract

an extended position and index finger of the contralateral hand on the volar aspect of the MCPJ to ensure an angle of 80°. DISCUSSIONWe hope that this simple technique will help immobilisation of the hand in the intrinsic plus position become more reproducible and at the same time reduce the risk of stiffness following immobilisation.