Nervous / VISUAL EXPLAINER
Why Does the Radial Nerve Split Near Your Elbow?
Near the elbow, the radial nerve divides into superficial and deep routes. The superficial branch continues toward dorsoradial hand skin, while the deep route enters the supinator region and supplies forearm muscles. The branch name does not describe its depth everywhere.
READ THE IMAGE
What the illustration shows
Cream-and-gold anatomy poster titled One radial nerve. Two distal routes. A dimensional elbow dissection shows a yellow radial nerve dividing beside the joint. Brachioradialis is reflected to reveal the superficial branch descending beneath it. The deep branch curves into opened supinator tissue around the proximal radius. Leader lines label humerus, radial nerve, both branches, brachioradialis, supinator and radius. Two lower panels show a small highlighted patch on the thumb-side back of a hand and a representative nerve entering muscle. Text explains that superficial is not its depth everywhere and that the route is simplified, variable and not a diagnostic map. Gold AllHumanBody.com and the complete brand slogan appear below.
How to interpret this poster
- Simplified exposed teaching route, not a surgical approach or exact three-dimensional reconstruction.
- Small hand patch is a location cue, not a complete sensory territory, fingertip map or clinical test.
- Branching and naming boundaries vary; deep branch is not devoid of sensory afferents and does not supply every wrist extensor.
- AI-assisted educational illustration; not physician certification, microscopy, a diagnosis or individualized medical advice.
- Fine annotations need enlargement; the full description provides an accessible text alternative.
- Display the full uncropped illustration; do not trim titles, legends or boundary annotations.
AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.
EVIDENCE / CONTEXT
Sources and what they support
- Washington University: Radial Nerve ↗
Elbow division, superficial skin target and deep supinator route with muscular targets.