snuffbox

The anatomic snuffbox, or simply the snuffbox, is a triangular depression on the dorsolateral aspect of the hand at the base of the thumb. It is bounded medially by the extensor pollicis longus tendon, laterally by the abductor pollicis longus and extensor pollicis brevis tendons, with the floor formed by the scaphoid and trapezium bones and the roof by skin and deep fascia.

Contents of the snuffbox include the radial artery, which runs along the floor and can be palpated in this region, as well as its dorsal carpal branches; the tendons that form the borders are the primary landmarks. The superficial branch of the radial nerve lies in proximity to the snuffbox, and small veins are present in the surrounding soft tissues.

Clinical significance: Tenderness in the anatomic snuffbox after a fall on an outstretched hand is a classic sign of a scaphoid fracture. The scaphoid bone has a retrograde blood supply, which raises the risk of avascular necrosis if fractured. Diagnosis typically involves imaging, and management may include immobilization or surgical fixation depending on the fracture pattern and stability.

Snuffbox also refers to a historical container for snuff, a powdered tobacco product. Snuffboxes were popular in Europe from the 17th to 19th centuries and were made from materials such as wood, silver, porcelain, and tortoiseshell, often featuring hinged lids and ornate decorations. Today they are valued as antiques and collectibles.