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Iliac crest reconstruction with a bioactive ceramic spacer
Manabu Ito1, Kuniyoshi Abumi, Hiroshi Moridaira
1Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita-15 Nishi-7 Kita-ku, 060-8638, Sapporo, Japan. maito@med.hokudai.ac.jp
Summary
The apatite wollastonite-containing glass ceramic (AWGC) iliac spacer effectively reconstructs iliac crest bone graft donor sites. Long-term studies show high patient satisfaction and new bone formation, confirming its utility.
Area of Science:
- Biomaterials Science
- Orthopedic Surgery
- Regenerative Medicine
Background:
- Autogenous tricortical iliac bone grafts are standard for spinal fusion.
- Graft harvesting creates defects at the iliac crest donor site.
- Reconstruction of these defects is crucial for patient recovery.
Purpose of the Study:
- To evaluate the long-term clinical outcomes of using apatite wollastonite-containing glass ceramic (AWGC) iliac spacers.
- To assess the efficacy of AWGC spacers in reconstructing iliac crest bone graft donor sites.
- To determine the safety and bone regeneration potential of AWGC spacers.
Main Methods:
- Prospective study of 31 patients undergoing anterior spinal fusion with iliac bone grafts.
- AWGC iliac spacers (15-70 mm) were press-fitted into graft donor site defects.
- Long-term follow-up included radiological assessment and blood examinations for silicon levels.
Main Results:
- 97% of patients reported satisfaction with the AWGC iliac spacer.
- Radiological evaluation revealed new bone formation around the spacer.
- Blood examinations showed no abnormal silicon concentrations, indicating safety.
Conclusions:
- AWGC iliac spacers are effective for reconstructing iliac crest bone graft donor sites.
- The material promotes new bone formation, reducing the defect size over time.
- AWGC spacers offer a safe and beneficial solution for managing iliac crest defects post-grafting.