Clinical Report: Coronal Fractures of the Hamate Body and CMC Joint Instability

Overview

This study investigates coronal fractures of the hamate body associated with instability in the fourth and fifth carpometacarpal joints.

Background

Hamate fractures are rare, constituting less than 5% of all carpal fractures. Recent studies suggest that hamate body fractures may be more common than previously thought. These fractures often involve instability of the fourth and fifth carpometacarpal joints.

Data Highlights

No numerical data or trial data provided in the source material.

Key Findings

• Coronal fractures of the hamate body are often associated with instability of the fourth and fifth carpometacarpal joints.
• Non-displaced and stable fractures can be treated non-operatively, while displaced fractures typically require surgical intervention.
• Delayed anatomical reduction may lead to poor functional outcomes.
• Fracture morphology may correlate with specific injury mechanisms.
• Current literature on coronal hamate body fractures is limited.

Clinical Implications

Surgeons should be aware of the potential for instability in the fourth and fifth carpometacarpal joints when treating coronal hamate body fractures. Accurate diagnosis and timely surgical intervention are critical to prevent long-term functional impairment.

Conclusion

Coronal fractures of the hamate body represent complex injuries that require careful assessment.

Related Resources & Content

1. Archives of Orthopaedic and Trauma Surgery, 2026 -- Split hamate fractures as part of complex ulnar carpometacarpal injuries: radiographic and functional outcomes
2. Archives of Orthopaedic and Trauma Surgery, 2022 -- Medial Femoral Condyle Flap Utilization for Managing Carpo-Metacarpal Instability After Comminuted Hamate Fracture
3. Archives of Orthopaedic and Trauma Surgery, 2024 -- Long-term results following capitate fractures: a median follow-up of 16 years
4. Archives of Orthopaedic and Trauma Surgery, 2026 -- Long-term results of thumb carpometacarpal joint arthrodesis
5. Joint Drs, 2025 -- Coronal hamate body fractures and CMC joint instability
6. Surgery Reference, ORIF for Dislocation and fracture-dislocation of the carpometacarpal joints
7. Hamate body fracture treated with headless compression screws: A case report
8. https://www.jointdrs.org/full-text-pdf/1646
9. ORIF for Dislocation and fracture-dislocation of the carpometacarpal joints