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A new vascularized bone graft for scaphoid nonunion
C Zaidemberg1, J W Siebert, C Angrigiani
1National Insitute of Rehabilitation, Buenos Aires, Argentina.
The Journal of Hand Surgery
|May 1, 1991
Summary
A novel vascularized bone graft from the distal dorsoradial radius aids scaphoid fracture nonunion. This technique offers a potentially shorter immobilization period and higher union rates compared to traditional methods.
Area of Science:
- Orthopedic Surgery
- Hand Surgery
- Vascularized Bone Grafting
Background:
- Scaphoid fractures frequently result in nonunion and avascular necrosis.
- Current treatments like screw fixation and bone grafting have high success rates but require prolonged immobilization (4-6 months).
Purpose of the Study:
- To identify a reliable vascularized bone graft source for scaphoid nonunion treatment.
- To evaluate the efficacy of a distal dorsoradial radius vascularized bone graft in patients with long-standing scaphoid nonunion.
Main Methods:
- Cadaveric dissection using latex injection to visualize small vessels (<0.1 mm).
- Harvesting a vascularized bone graft from the distal dorsoradial radius.
- Surgical application of the graft in eleven patients with scaphoid nonunion.
Main Results:
- A consistent vascularized bone graft source was identified in the distal dorsoradial radius.
- Eleven patients with long-standing scaphoid nonunion treated with this graft showed good results.
- The technique is technically straightforward.
Conclusions:
- The distal dorsoradial radius provides a viable source for vascularized bone grafts in scaphoid nonunion.
- This approach may reduce immobilization time and improve union rates.
- It offers a promising alternative for managing complex scaphoid nonunions.