Clinical anatomy : official journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists
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The purpose of this study is to predict the location of radial nerve (RN) utilizing palpable anatomic landmarks. Thirty-four paired upper limbs were dissected. The RN was localized: (1) at the humeral spiral groove (SG), (2) lateral intermuscular septum (LIS), and (3) at its' division into the posterior interosseous nerve (PIN) and radial sensory nerve (RSN). ⋯ The RN pierced the LIS, on average, 38% (29%-56%) of humeral length, proximal to the lateral epicondyle (LE). The PIN/RSN division occurred on average 1.0 cm (-11.4 to 3.5) distal to the LE. The PIN crossed the AN, on average, 10% (5%-14%) of radial length, distal to the radial head articular surface.