scaphoides

The scaphoid bone, also known as the navicular bone, is one of eight small carpal bones located in the wrist. It is situated in the proximal row of carpal bones, positioned between the radius (the larger of the two forearm bones) and the other carpal bones. The scaphoid plays a crucial role in wrist stability and movement, contributing to the articulation between the forearm and the hand.

The scaphoid is unique among carpal bones due to its elongated shape and its tendency to fracture, particularly in cases of wrist trauma. Fractures of the scaphoid are common injuries, often resulting from falls onto an outstretched hand. These fractures can occur anywhere along the bone but are most frequently seen near the waist, a region where the scaphoid is narrower and more susceptible to stress.

Symptoms of a scaphoid fracture typically include localized pain, swelling, and tenderness near the base of the thumb, particularly when gripping objects or applying pressure. Diagnosis often involves clinical examination, X-rays, and sometimes advanced imaging techniques like CT scans or MRI to confirm the fracture and assess its severity. Treatment may range from immobilization with a cast or splint to surgical intervention, depending on the fracture’s location and displacement.

If left untreated, scaphoid fractures can lead to complications such as nonunion (failure to heal properly), avascular necrosis (loss of blood supply to the bone), or degenerative arthritis. Proper diagnosis and timely treatment are essential to prevent long-term wrist dysfunction. Rehabilitation often includes physical therapy to restore strength, range of motion, and function to the wrist and hand.