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Software-Assisted Quantitative Measurement of Osteoarthritic Subchondral Bone Thickness
Published on: March 18, 2022
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Subchondral bone in osteoarthritis: association between MRI texture analysis and histomorphometry
J W MacKay1, P J Murray2, B Kasmai2
1Department of Radiology, Norfolk & Norwich University Hospital, Norwich, UK; Department of Radiology, University of Cambridge, Cambridge, UK.
Osteoarthritis and Cartilage
|December 18, 2016
Summary
Magnetic resonance imaging (MRI) texture analysis accurately reflects subchondral bone structure in knee osteoarthritis (OA). This non-invasive imaging technique shows strong associations with detailed bone histomorphometry, offering a promising tool for OA assessment.
Area of Science:
- Orthopedics
- Radiology
- Biomedical Engineering
Background:
- Osteoarthritis (OA) is a degenerative joint disease characterized by cartilage breakdown and subchondral bone alterations.
- Accurate assessment of subchondral bone changes is crucial for understanding OA progression and developing effective treatments.
- Magnetic resonance imaging (MRI) texture analysis offers a potential non-invasive method to evaluate these bone microstructural changes.
Purpose of the Study:
- To evaluate the association between MRI texture analysis of subchondral bone and ground-truth histomorphometry.
- To determine the correlation between advanced MRI texture features and quantitative bone parameters at the tibial plateau in OA patients.
Main Methods:
- A cross-sectional study involving ten participants with knee OA undergoing total knee arthroplasty (TKA).
- Pre-operative 3T MRI of the tibial plateau was performed using a high spatial-resolution T1-weighted sequence.
- Tibial plateau explants were histologically analyzed to quantify bone volume fraction (BV/TV), trabecular thickness (Tb.Th), trabecular separation (Tb.Sp), and trabecular number (Tb.N).
- MRI texture analysis was applied to matched subchondral bone regions, and regression models assessed associations with histomorphometric parameters.
Main Results:
- Significant associations were found between MRI texture analysis features and all measured histomorphometric parameters.
- High R-squared values indicated strong correlations: BV/TV (R²=0.76), Tb.Th (R²=0.47), Tb.Sp (R²=0.75), and Tb.N (R²=0.60).
- Simple gray-value histogram-based texture features showed the highest predictive power for bone parameters.
Conclusions:
- MRI texture analysis is a valuable tool for assessing subchondral bone structure in knee OA.
- The findings demonstrate a significant correlation between non-invasive MRI texture features and direct histological measurements of bone.
- This technique holds promise for improved, non-invasive evaluation of bone alterations in osteoarthritis.
