Radius – styloid process

Anatomy

Bulge down from lateral side (thumb-side) lower extremity, conical in shape, giving attachment to tendons of brachoradialis, abductor pollicis longus and extensor pollicis brevis, and radial collateral ligament of wrist.

Bigger, more inferior/distal than ulnar styloid.

Vignette

Chauffeur’s fracture; pressure of scaphoid on styloid.

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