Trapezium bone accidents are unusual carpal bone accidents. They can either happen in solitude or along with other carpal bony injury. This accounts for 1 to 5 percent of wrist fractures. It could be isolated fracture or dislocations.Mechanism of Injury
- Fall on an outstretched hand.
- Direct blow over the dorsum of the hand.
Trapezium fractures are divided into:
- Body fractures
- Ridge fractures (Palmar)
- Dislocations: This could be dorsal, palmar or radial and may be associated with fracture of the scaphoid and trapezium.
The patient complains of:
Plain X-rays though useful are not reliable. CT scan is a better option.
Treatment
- Undisplaced fracture: Thumb spica for 4 to 6 weeks.
- Displaced fracture: Open reduction and rigid internal fixation is advised.
- Dislocation is treated by open reduction and K-wire fixation.