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A capsular-based vascularized distal radius graft for proximal pole scaphoid pseudarthrosis.
Dean G Sotereanos1, Nickolaos A Darlis, Zoe H Dailiana
1Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, PA 15212, USA. dsoterea@hotmail.com
The Journal of Hand Surgery
|April 25, 2006
Summary
A novel capsular-based vascularized bone graft from the distal radius effectively treats scaphoid proximal pole nonunions, including those with avascular necrosis, with good union rates and minimal complications.
Area of Science:
- Orthopedic surgery
- Hand surgery
- Bone reconstruction
Background:
- Scaphoid proximal pole nonunions, often with avascular necrosis, present a significant clinical challenge.
- Traditional treatments may involve complex techniques or have limited success rates.
Purpose of the Study:
- To assess the clinical outcomes of a specific technique for treating scaphoid proximal pole nonunions.
- To evaluate the efficacy of a capsular-based dorsal distal radius vascularized bone graft.
Main Methods:
- Retrospective review of 13 patients with symptomatic scaphoid proximal pole nonunion.
- Application of a vascularized bone graft harvested from the distal radius, attached to dorsal wrist capsule.
- Graft insertion into a dorsal trough with Herbert screw fixation for the scaphoid.
Main Results:
- Solid bone union was achieved in 10 out of 13 scaphoid nonunions.
- Eight of the 10 cases with avascular necrosis achieved union.
- No significant complications were reported besides three persistent nonunions.
Conclusions:
- Capsular-based distal radius vascularized bone grafts offer a favorable alternative for proximal pole scaphoid nonunions.
- This technique simplifies treatment by avoiding small pedicle dissection or microsurgical anastomoses.
- The procedure demonstrated no donor site morbidity.