More severe microdamage and micromechanical alterations: altered subchondral bone remodeling in varus knee osteoarthritis with osteoporosis
Authors' conclusion
Our findings indicate that osteoporosis significantly intensifies cartilage degeneration in the medial tibial plateau of patients with knee osteoarthritis.
Study context
- Population
- Tibial plateau specimens from patients with knee osteoarthritis (OA), with or without osteoporosis
- Participants
- 50 participants
- Exposure
- OP-OA vs OA
- OP-OAn = 25
- OAn = 25reference
Methodological detailstibial plateau specimens, micro-CT, micro-finite element analysis
- Tibial plateau specimens
- micro-CT
- Micro-finite element analysis
Main finding
As reported in the abstract
- OARSI cartilage score of medial tibial plateau 13.71% higher in OP-OA vs OA (P < 0.05)
- Subchondral BV/TV, medial tibial plateau: OP-OA 0.58 ± 0.02 vs OA 0.68 ± 0.02 (P < 0.05)
- Significant decreases in Tb.N and Tb.Th; Tb.Sp and SMI increased
- Osteoblasts in medial subchondral bone lower in OP-OA; osteoclasts 55.90% higher (P < 0.05)
- CrDn in medial subchondral bone 69.01% higher in OP-OA (P < 0.05), greater microdamage severity
- Subchondral bone stresses higher and more localized to the medial side in OP-OA vs OA
Observational data: associations, not effects.
Original publication
More severe microdamage and micromechanical alterations: altered subchondral bone remodeling in varus knee osteoarthritis with osteoporosis. Osteoporos Int. Published 27 August 2025. doi:10.
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