Head Of The Radius In Anterior View

Description

Radial head (caput radii) occupies the proximal end of the radius, presented in anterior view with its disc-like articular surface facing superiorly toward the humeral capitulum. The shallow fovea capitis radii sits centrally, while the smooth articular circumference wraps the periphery for contact with the radial notch of the ulna, a relationship maintained by the annular ligament. Inferior to the head, the narrowed collum radii transitions into the proximal shaft, with the radial tuberosity positioned anteromedially and slightly distal, marking the insertion of the biceps brachii tendon. Orientation is unambiguous. Radial head anatomy matters whenever elbow stability and forearm rotation are on the table: fractures commonly involve the anterolateral rim, where axial load through the wrist transmits to the capitulum, and even small step-offs can block pronation and supination. This fixed anterior perspective makes the contour of the articular margin and the head-to-neck junction easy to judge, which is exactly what surgeons reference when planning fixation, excision, or radial head arthroplasty after a Mason II to III injury. Subtle changes in the radius of curvature and neck alignment also help explain posterolateral rotatory instability patterns when the lateral collateral ligament complex is compromised. Use this illustration in gross anatomy and orthopaedic teaching sessions on the elbow joint, in exam figures for upper-limb osteology, or in operative notes and textbooks discussing radial head fracture classification and implant sizing. It also suits patient-facing materials that need a single, accurate view of the proximal radius without distracting surrounding soft tissues. Anatomical accuracy verified by SciePro's Medical Advisory Board.