I have pain over the scaphoid bone in my wrist; what is the appropriate management?

Management of Scaphoid Pain

For pain over the scaphoid bone, obtain standard wrist radiographs immediately (PA, lateral, and semipronated oblique views), and if negative but clinical suspicion remains high (snuffbox tenderness or pain with axial thumb loading), immobilize in a thumb spica cast and either repeat radiographs in 10-14 days or proceed directly to MRI or CT without contrast to exclude occult fracture. 1

Initial Diagnostic Approach

Clinical Evaluation

• Snuffbox tenderness and/or pain with axial loading of the thumb should be treated as a scaphoid fracture until proven otherwise 2
• These clinical findings have high sensitivity for scaphoid injury and warrant immediate protective management 3

Initial Imaging: Radiography

• Standard 3-view wrist radiographs are always indicated as the first imaging study 1
• Required views include: posteroanterior (PA), lateral, and 45-degree semipronated oblique (scaphoid view) 1
• Conventional radiography alone can miss up to 30% of scaphoid fractures 3
• A fourth semisupinated oblique projection may increase diagnostic yield for distal radius fractures 1

Management When Initial Radiographs Are Negative

Two Evidence-Based Options:

Option 1: Presumptive Immobilization with Delayed Repeat Imaging

• Place patient in short arm thumb spica cast 1, 4
• Repeat radiographs at 10-14 days 1, 3
• This traditional approach delays definitive diagnosis but is cost-effective 1
• Downside: Results in delay of diagnosis which may lead to functional impairment 1

Option 2: Advanced Imaging (Preferred for Earlier Diagnosis)

• Either MRI without IV contrast OR CT without IV contrast is usually appropriate 1
• MRI is highly sensitive to bone marrow changes and can identify radiographically occult acute fractures 1
• MRI led to change in diagnosis in 55% of patients and change in management in 66% when radiographs were non-diagnostic 1
• CT provides high-detail imaging of bone cortex and trabeculae with shorter acquisition times than MRI 1
• CT may be easier to perform in casted patients 1
• MRI has greater sensitivity for bone bruises and soft-tissue injuries compared to CT 1
• IV contrast does not add diagnostic value and is not appropriate 1

Alternative Imaging Modalities (Lower Priority):

Bone Scan:

• Frequently positive 1-2 weeks before radiographs become positive 1
• Normal bone scan can reliably exclude occult scaphoid fracture 1
• Lower specificity than CT/MRI (positive with bone contusions, osteoarthritis, other osteoblastic processes) 1
• May be reasonable alternative in claustrophobic patients 1

Ultrasound:

• Not suitable for early diagnosis of scaphoid fracture (47% sensitivity, 61% specificity) 1
• Conflicting evidence exists, with one study showing cortical disruption as accurate diagnostic sign 1
• Further study needed before routine clinical use 1

Treatment Based on Fracture Characteristics

If Fracture Confirmed:

Nondisplaced/Stable Fractures:

• High union rates with cast treatment in short arm thumb spica cast 2, 4
• Requires extended periods of immobilization 2
• Prolonged immobilization may lead to muscle atrophy, joint contracture, and disuse osteopenia 5
• Percutaneous screw fixation increasingly popular as alternative to allow early return to activity 2, 5, 4

Displaced/Unstable Fractures:

• Nearly all displaced scaphoid fractures should undergo operative intervention to reduce risk of nonunion 2
• Open reduction and screw fixation recommended 4
• Closed reduction with percutaneous fixation can be considered for minimally displaced or reducible fractures 4

Proximal Pole Fractures:

• Consensus in literature that proximal pole fractures should be treated surgically 5
• Higher risk of nonunion due to tenuous blood supply 5

Critical Pitfalls to Avoid

• Never dismiss snuffbox tenderness with negative initial radiographs - up to 30% of scaphoid fractures are radiographically occult initially 3
• Delayed diagnosis can lead to scaphoid nonunion resulting in diffuse wrist osteoarthritis 6
• Avoid prolonged immobilization of unstable fractures when surgical stabilization is the better option 5
• Do not order MRI or CT with IV contrast - it provides no added diagnostic value for acute fracture evaluation 1

Follow-up for Chronic Scaphoid Pain

If patient has prior scaphoid fracture with chronic pain:

• Either CT or MRI without IV contrast is usually appropriate to evaluate for complications (nonunion, malunion, osteonecrosis, wrist osteoarthritis) 1
• Only one test is necessary, not both 1
• MRI with IV contrast may be appropriate in select cases to assess viability of fracture fragments 1