Cutaneous Innervation, Black

Description

Shown in right-facing profile, the adult male figure is split into a naturalistic cutaneous surface on the left and a color-coded map on the right that corresponds to segmental and named peripheral nerve territories across the skin. Over the lateral neck and shoulder, cervical plexus fields (including the supraclavicular nerves) transition inferiorly into intercostal cutaneous branches over the thoracic wall, while the upper limb regions align with the axillary, radial, median, and ulnar distributions from proximal arm to the hand. Inferiorly, the flank and anterior thigh areas relate to iliohypogastric and ilioinguinal nerves, lateral femoral cutaneous nerve, femoral nerve branches, and obturator nerve medially, continuing distally toward saphenous, superficial fibular (peroneal), deep fibular, sural, and tibial territories at the leg and foot. Clear boundaries matter. Cutaneous innervation charts are where sensory complaints become localizable lesions, and the profile orientation helps separate anterior, lateral, and posterior patterns that can look deceptively similar on a frontal view. Lateral thigh numbness that respects the inguinal ligament and spares the medial thigh points toward meralgia paresthetica (lateral femoral cutaneous nerve entrapment), not an L4 radiculopathy. Likewise, a sensory split between dorsal first web space (deep fibular) and lateral dorsum (superficial fibular) can steer evaluation after ankle inversion injuries or fibular neck trauma. Use this illustration in gross anatomy and neuroanatomy teaching to contrast dermatomes with peripheral nerve fields, and in clinical skills or neurology modules to practice mapping sensory loss on examination. It also fits well in patient-facing materials for peripheral neuropathy, postherpetic neuralgia distribution, and preoperative counseling where expected areas of numbness follow a named nerve rather than a dermatome. Anatomical accuracy verified by SciePro's Medical Advisory Board.