Scaphoid fracture (scaphoid fracture)

What is a scaphoid fracture?

The scaphoid is one of the most important carpal bones. It connects the proximal and distal rows and contributes significantly to stability and power transmission in the wrist. A fracture usually occurs as a result of falling from a standing position or while playing sports. Depending on the fracture line and a possible displacement (dislocation), the chances of healing differ significantly.

• Most common carpal fracture, v. a. among younger people and those who do sports
• Pain in the area of ​​the “snuff pit” (fovea tabatière) on the side of the thumb
• X-rays may initially be unremarkable - further imaging then makes sense

Anatomy: scaphoid and blood circulation

The scaphoid lies on the thumb side of the carpus. Its blood supply runs predominantly from distal (far from the body) to proximal (near the body). This is why fractures at the proximal pole are particularly sensitive: they have a higher risk of circulatory disorders and even avascular necrosis and heal more slowly.

• Zones: proximal pole, middle part (waist), distal pole
• Blood supply predominantly retrograde – relevant for the risk of healing
• Biomotor role: power transmission and kinematics of the wrist

Causes and risk factors

The scaphoid fracture is usually caused by a fall on the dorsally extended hand (FOOSH). Direct blows or accidents are less common. Risk factors include sports with a risk of falling (bicycle, skateboard, snowboard), rapid changes of direction, or previous wrist injuries.

• Mechanism: Fall onto the outstretched hand
• High risk in contact sports and board sports
• Nicotine abuse can impair bone healing

Symptoms

The symptoms are often subtle at first. Pain usually increases with pressure in the snuff pit, when gripping, supporting or turning the hand. Swelling and restricted movement may or may not be present.

• Pressure pain on the side of the thumb (snuff pit)
• Pain on axial pressure on the thumb
• Weakness when grasping, reduced range of motion
• Occasionally just “pulling” instead of clear pain

Diagnostics: X-ray, CT, MRI

After anamnesis and examination, X-ray diagnostics are first carried out in several levels, including special scaphoid images. Since fresh scaphoid fractures can initially be inconspicuous on X-ray, if there is strong suspicion, immobilization with subsequent follow-up or early further imaging makes sense.

• X-ray in 3-4 levels including scaphoid tube
• CT: Assessment of the fracture line, step formation, displacement and healing progress
• MRI: high sensitivity for recent bone injury and vitality of the proximal pole
• Clinical tests: tenderness, axial thumb pressure, pain on ulnar abduction

Important: If there is reasonable suspicion, the wrist should be immobilized until the diagnosis is confirmed in order to avoid worsening.

Classification and fracture types

Clinically, a distinction is made according to location (distal, waist, proximal), displacement (displaced vs. not displaced) and stability. Displaced, multi-fragmentary or proximal pole fractures are considered unstable.

• Distal pole: usually good healing tendency
• Waist (middle part): most common location
• Proximal pole: increased risk of delayed healing/avascular necrosis
• Dislocation >1 mm, step formation, tilting or accompanying ligament injuries = unstable

Conservative treatment: think first, decide safely

Many nondisplaced fractures can be treated conservatively. The aim is to achieve stable, pain-adapted immobilization until safe bony healing can be demonstrated. The duration varies depending on the location and individual healing propensity.

• Immobilization with a forearm cast or stable splint (often with the thumb included), initially 6–8 weeks
• Controls using clinical examination and imaging (e.g. CT for consolidation)
• Adapted analgesia, elevation, lymphatic drainage as needed
• Early function of the non-immobilized joints (fingers, shoulders), occupational therapy to prevent swelling

Conservative approach is particularly suitable for distal and waist fractures without displacement. In the case of proximal fractures or uncertain conditions, we carefully examine whether early functional surgical stabilization offers advantages.

Surgical treatment: when and how?

Surgery is considered if the fracture is displaced/unstable, if the proximal pole is affected, or if functional demands (e.g., competitive sports, physical work) suggest prior stability. The goal is anatomical reduction and compression-stable fixation.

• Screw osteosynthesis (e.g. cannulated compression or Herbert screw), open or percutaneous
• Volar (waist/distal) or dorsal (proximal pole) access, if necessary arthroscopically assisted
• For comminuted zones/fracture gap persistence: autologous spongiosaplasty (e.g. iliac crest)
• For blood circulation problems/pseudarthrosis: vascularized bone transplants in specialized cases

The available evidence shows advantages of surgical stabilization in selected constellations (e.g. faster functional resilience). However, a blanket recommendation does not make sense - the indication is determined individually based on imaging, risk profile and everyday requirements.

Follow-up treatment and rehabilitation

Structured follow-up treatment supports healing and helps to safely regain mobility and strength. The stress level is gradually increased based on clinical findings and imaging.

• splint/orthosis in the early phase; Pain-adapted mobilization of the neighboring joints
• Physical and occupational therapy: range of motion, proprioception, grip strength
• Adaptation to work and sport: office work possible early on, manual work after proof of healing
• Regular follow-up checks (clinical, if necessary CT for consolidation)

Possible complications

Despite careful treatment, complications can occur. Early detection improves treatment options.

• Delayed healing or nonunion (nonunion)
• Avascular necrosis of the proximal pole
• SNAC wrist (secondary osteoarthritis after scaphoid failure)
• Misalignments, restricted movement, weak grip
• CRPS (complex regional pain syndrome, rare)

If pain persists, increasing swelling, sensory disturbances or inability to exercise, you should see a doctor again.

Prognosis and healing time

Healing time depends on location, dislocation, nicotine consumption and accompanying injuries. Distal fractures usually heal more quickly, proximal fractures take the longest.

• Conservative (non-displaced, distal/waist type): often 6-10 weeks of immobilization, return to daily activities depending on pain
• Surgically stabilized: early controlled mobilization possible; Full loading only after secure consolidation
• Sports: low-contact from around 6-8 weeks, contact sports/board sports often only after 10-12+ weeks - depending on evidence of healing

Prevention and self-help

Falls cannot always be prevented. A few steps can reduce the risk and consequences.

• Protective equipment for sports (wrist guards depending on the discipline)
• Technique training and strength training for the forearm/hand
• Quitting smoking supports bone healing
• Early diagnosis after a fall – don’t “train away”

When should you seek medical advice immediately?

• Severe pain, visible misalignment or pronounced swelling
• Numbness, tingling or paleness/coldness of the hand
• Increasing pain after a new fall/trauma despite immobilization
• Fever, redness or wound discharge after surgery

Special situations: sports, work, children

Competitive sports and manual work place special demands. The goal is a safe return to activity without an increased risk of nonunion. Fractures often heal well in children and adolescents, but correct diagnosis is essential.

• Sports: gradual return-to-play following clinical and imaging clearance
• Work: Office work often possible early; heavy physical work only after consolidation
• Children/adolescents: often conservatively successful; If the X-ray findings are unclear, it is better to have an MRI to confirm

Regenerative and complementary processes: what makes sense?

In the case of uncomplicated, fresh fractures, immobilization or screw osteosynthesis are the priority. Additional measures are considered individually.

• Bone stimulation (e.g. low-frequency ultrasound): used in some cases, the evidence is heterogeneous; Decision made individually
• Biological augmentation (autologous cancellous bone) established for delayed healing/pseudarthrosis
• Injections such as PRP currently do not play a proven role in acute scaphoid fractures

We discuss opportunities and limitations transparently - without promising salvation - and only recommend procedures with a comprehensible risk-benefit profile for your situation.

Your treatment in Hamburg

As a practice for conservative orthopedics in Hamburg-Winterhude, we value precise diagnostics and the most gentle treatment possible for your scaphoid fracture. You can find us at Dorotheenstraße 48, 22301 Hamburg. You can easily request appointments online or by email.

• Careful examination and modern imaging
• Conservative therapy first – surgery only if there is a clear indication
• Individual aftercare with physical and occupational therapy
• Transparent information and realistic objectives