Give me anatomical point 4 small point on radius
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anatomical landmarks points of radius bone
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radius bone anatomy anatomical landmarks
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Here are 4 key anatomical points (landmarks) of the Radius:
Anatomical Landmarks of the Radius
1. Head of the Radius (Proximal end)
- Disc-shaped, articulates with the capitulum of the humerus (forming part of the elbow joint) and the radial notch of the ulna (proximal radioulnar joint).
- Palpable just below the lateral epicondyle.
2. Radial Tuberosity (Neck–shaft junction)
- Oval bony prominence just distal to the neck of the radius.
- Serves as the insertion point of the biceps brachii tendon.
- Lies on the medial aspect when the forearm is supinated.
3. Radial Styloid Process (Distal end – lateral)
- Pointed projection on the lateral (radial) side of the distal radius.
- Extends ~1 cm further distally than the ulnar styloid.
- Site of attachment of the brachioradialis muscle and the lateral collateral ligament of the wrist.
4. Lister's Tubercle (Dorsal Tubercle) (Distal end – dorsal)
- A prominent bony ridge on the dorsal surface of the distal radius.
- Acts as a pulley for the extensor pollicis longus (EPL) tendon, which wraps around its ulnar side.
- Key surgical and clinical landmark during wrist procedures and fracture fixation.
Summary Table
| # | Landmark | Location | Clinical Relevance |
|---|---|---|---|
| 1 | Head of Radius | Proximal | Elbow joint; fractured in falls on outstretched hand |
| 2 | Radial Tuberosity | Proximal shaft | Biceps brachii insertion |
| 3 | Radial Styloid | Distal, lateral | Brachioradialis attachment; fracture in Colles'/Smith's |
| 4 | Lister's Tubercle | Distal, dorsal | EPL tendon pulley; wrist surgery landmark |
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