• T J Vander Salm, J M Cereda, and B S Cutler.
• J. Thorac. Cardiovasc. Surg. 1980 Sep 1;80(3):447-52.

AbstractBrachial plexus injuries are annoyingly common after median sternotomies and vary from those causing minor symptoms to those producing major disability. We compared two groups of patients operated upon with the arms either abducted to a 90 degree angle or at the sides and found no difference in the incidence of brachial plexus injury. However, the finding of Horner's syndrome in one patient and the finding in another (at autopsy) of brachial plexus penetration by a fractured first rib caused us to question traction on the brachial plexus as the correct pathogenesis of the injury. A concomitant autopsy study demonstrated fractured first ribs penetrating the brachial plexus in 11 of 15 patients whose sternum was opened with the sternal retractor placed in the usual location, but in none in 15 patients whose sternum was opened with the retractor displaced two intercostal spaces caudally. The injury can be minimized by opening the sternal retractor as little as is necessary and by placing it as caudally as possible commensurate with adequate exposure.

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