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Strontium ranelate stimulates trabecular bone formation in a rat tibial bone defect healing process
C Lavet1, G Mabilleau2,3, D Chappard2,3
1Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospital, 4, rue Gabrielle-Perret-Gentil, CH-1211, Geneva 14, Switzerland. Cedric.Lavet@unige.ch.
Summary
Strontium ranelate enhances bone healing by increasing bone formation in defects and reducing resorption in both healing and normal bone. This treatment improves bone defect repair without negatively impacting bone quality.
Area of Science:
- Orthopedics
- Bone Biology
- Pharmacology
Background:
- Strontium ranelate (SrRan) is known to prevent fractures.
- Its effect on bone formation during healing is debated.
- SrRan may influence bone differently in mature bone versus during healing.
Purpose of the Study:
- To investigate the differential effects of SrRan on bone formation and resorption in intact and healing bone compartments.
- To assess SrRan's impact on bone healing quality and bone volume.
Main Methods:
- Bone defects were created in rat tibias.
- Rats received oral SrRan or vehicle for 4, 8, or 12 weeks.
- Micro-CT, histomorphometry, and bone quality assessments were performed.
Main Results:
- SrRan accelerated bone defect healing, with earlier cortical bridging.
- Bone formation increased in the healing compartment; resorption decreased in both healing and normal compartments.
- No deleterious effects on newly formed bone quality were observed.
Conclusions:
- SrRan differentially affects bone formation in mature bone versus during healing.
- It enhances bone defect repair by modulating formation and resorption.
- Increased bone volume was achieved without compromising bone quality.
