Scaphoid Fracture: The Wrist Injury That Can't Be Missed | Guide | Artur Soczka, MD, PhD

An injury that's easy to miss

Scaphoid fractures are among the wrist injuries that can go undiagnosed in the early phase.

The typical scenario: a fall onto an outstretched hand, pain on the thumb side of the wrist, and mild swelling. An X-ray in the emergency department shows no obvious fracture — the injury is labelled a bruise or sprain.

The patient goes home, but days or even weeks later the pain persists. Only more detailed imaging reveals the scaphoid fracture.

What is the scaphoid?

The scaphoid is one of eight small bones that make up the wrist. It sits on the thumb side and belongs to the proximal carpal row.

It plays a critical role in wrist biomechanics — transmitting loads between the forearm and hand and contributing to overall wrist stability.

A key characteristic is its limited blood supply: vessels enter mainly from the distal end (thumb side). This means fracture healing can be impaired, and some fractures are invisible on early X-ray.

Symptoms of a scaphoid fracture

Symptoms can initially be subtle and resemble a simple wrist bruise. The most common are:

• pain on the thumb side of the wrist,
• tenderness in the anatomical snuffbox,
• pain with axial compression of the thumb,
• mild wrist swelling,
• weakened grip,
• pain-limited wrist range of motion.

For these reasons, scaphoid fractures are often initially difficult to diagnose.

Why is this fracture so treacherous?

Blood supply enters the scaphoid predominantly from the distal pole. A fracture can disrupt blood flow to the proximal fragment — the part closest to the forearm bones.

This is why scaphoid fractures carry a higher risk of complications than most other wrist injuries. The more proximal the fracture line, the greater the risk of healing problems.

Possible complications

The most important complications are:

• non-union (failure to heal),
• pseudarthrosis (false joint formation),
• avascular necrosis of the proximal fragment,
• secondary wrist osteoarthritis.

These complications can cause chronic wrist pain, reduced mobility, and impaired hand function.

Common diagnostic pitfalls

The most common pitfall is dismissing a fracture based on a single X-ray.

If symptoms persist, further imaging may be needed:

• repeat X-ray (including a dedicated scaphoid view),
• MRI,
• CT scan.

These studies detect fractures that are invisible on the initial radiograph.

Conservative treatment

Undisplaced fractures in a well-vascularised zone are usually treated conservatively — immobilisation in a cast or splint with regular monitoring of the healing process.

Surgical treatment

Surgery is considered for displaced fractures, non-union, or a high risk of complications — particularly fractures in the poorly vascularised proximal zone.

The procedure involves accurate reduction of the fragments and fixation with a compression screw, achieving stable bony union.

When should you see a specialist?

Seek specialist evaluation after any fall onto an outstretched hand if wrist pain persists for more than a few days.

Early diagnosis of a scaphoid fracture reduces the risk of complications such as non-union and secondary osteoarthritis. If you have sustained a wrist injury and the pain continues, consult a hand surgery specialist.

Related content and next steps

• Doctor profile: Artur Soczka, MD, PhD
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