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Management of scaphoid nonunions
Thanapong Waitayawinyu1, H James Pfaeffle, Wren V McCallister
1Department of Orthopaedics and Sports Medicine, University of Washington, 4245 Roosevelt Way NE, Box 354743, Seattle, WA 98195-4743, USA.
The Orthopedic Clinics of North America
|June 15, 2007
Summary
Scaphoid nonunions, often with deformity or avascular necrosis, require surgical correction. Treatment involves open reduction, internal fixation, bone grafting, and vascularized grafts for necrosis.
Area of Science:
- Orthopedic surgery
- Radiology
- Bone healing
Background:
- Scaphoid nonunions present challenges, potentially involving proximal pole avascular necrosis or humpback deformity from waist fractures.
- Accurate diagnosis is crucial for effective treatment planning.
Purpose of the Study:
- To outline diagnostic modalities and surgical strategies for scaphoid nonunions.
- To emphasize the importance of addressing associated deformities and avascular necrosis.
Main Methods:
- Computed Tomography (CT) for evaluating deformity and bone loss.
- Magnetic Resonance Imaging (MRI) for detecting avascular necrosis.
- Surgical techniques including open reduction, internal fixation, and bone grafting.
Main Results:
- CT effectively visualizes humpback deformity and bone loss in scaphoid waist fractures.
- MRI is superior for identifying avascular necrosis of the proximal pole.
- Surgical intervention aims to correct deformity and restore bone stock.
Conclusions:
- Scaphoid nonunions necessitate tailored operative treatment based on imaging findings.
- Vascularized bone grafts are indicated for scaphoid nonunions with avascular necrosis.
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