How should I manage a patient with right wrist pain and an X‑ray demonstrating a calcified fragment in the triquetrum?

Management of Calcified Fragment in the Triquetrum

For a patient with right wrist pain and X-ray showing a calcified fragment in the triquetrum, immobilize the wrist in a short-arm cast for 3 weeks and provide conservative management, as this represents a dorsal triquetral chip fracture—the most common type of triquetral injury that heals well without surgery. 1

Understanding the Injury

Triquetral fractures are the second most common carpal fractures after scaphoid fractures, accounting for 15-18% of all carpal bone injuries 2. The calcified fragment you're seeing on X-ray is almost certainly (93% probability) a dorsal cortical chip fracture 1. These occur through two mechanisms:

• Avulsion by dorsal ligamentous attachments during wrist hyperextension
• Impaction from a prominent ulnar styloid acting like a chisel 1

Initial Diagnostic Workup

Since you already have plain radiographs showing the calcification, you've completed the appropriate initial imaging per ACR guidelines 3. The lateral wrist view is particularly important for confirming dorsal chip fractures 1.

Key clinical findings to document:

• Localized tenderness over the dorsal aspect of the triquetrum
• Ulnar-sided wrist pain
• History of fall on outstretched hand (FOOSH injury) with wrist extension and ulnar deviation 1, 2

Treatment Algorithm

For Isolated Dorsal Chip Fractures (Your Case):

1. Immobilize in short-arm cast for 3 weeks 1
2. Reassure patient that osseous healing takes 6-8 weeks 4
3. No surgical intervention needed 4

Important Caveats:

If pain persists beyond 2 months despite conservative treatment, you must consider associated injuries:

• TFCC (triangular fibrocartilage complex) injury is a common cause of persistent ulnar-sided pain after triquetral fractures 5
• Physical examination should include TFCC stress tests
• If positive, obtain MRI without contrast to evaluate for TFCC tears 5
• Wrist arthroscopy with partial TFCC resection may be needed for persistent symptoms 5

Advanced Imaging Considerations

CT without IV contrast is indicated if 3:

• You suspect a triquetral body fracture (much less common)
• There's concern for perilunate fracture-dislocation
• The fracture pattern is unclear on plain films

MRI without IV contrast is indicated if 3:

• Persistent pain after 2 months of treatment
• Suspicion of TFCC injury
• Concern for palmar cortical fracture (may indicate lunotriquetral ligament avulsion) 1

Expected Outcomes

• Good prognosis: Dorsal chip fractures heal reliably with conservative treatment 4
• Residual symptoms for several months are not uncommon but should gradually improve 1
• Avascular necrosis is not a concern due to excellent triquetral vascularization 4
• Post-traumatic instability is rare with isolated triquetral fractures 4

Common Pitfalls to Avoid

1. Don't dismiss persistent pain: If symptoms continue beyond 2 months, actively investigate for TFCC injury rather than continuing immobilization 5

2. Don't confuse with other pathology: The differential for a calcified fragment includes calcific tendinitis of extensor tendons (though this would be in/around tendons, not bone) 6 or rarely osteoid osteoma (which presents with severe nocturnal pain responsive to NSAIDs and shows a lucent nidus with sclerotic rim on CT) 7, 8

3. Don't order unnecessary advanced imaging initially: Plain radiographs are sufficient for diagnosis and management of uncomplicated dorsal chip fractures 9, 3

4. Don't assume all triquetral fractures are benign: Body fractures and volar cortical fractures require more aggressive workup and may need surgical intervention 1, 2