Skip to Main content Skip to Navigation
Journal articles

BMI-related microstructural changes in the tibial subchondral trabecular bone of patients with knee osteoarthritis

Abstract : Overweight is a risk factor for osteoarthritis on the knees. Subchondral trabecular bone (SCTB) densification has been shown to be associated with cartilage degeneration. This study analyzed the microarchitectural changes in the SCTB of tibial plateaus to validate the hypothesis that the degree of remodeling is correlated with a patient's body weight. Twenty-one tibial plateaus were collected during total knee arthroplasty from 21 patients (15 women and 6 men). These patients had a mean age of 70.4 years (49-81), mean weight of 74.7 kg (57-93) and mean body mass index (BMI) of 28.4 kg/m2 (21.3-40.8). One cylindrical plug was harvested in the center of each tibial plateau (medial and lateral). Micro-CT parameters (7.4 μm resolution) were determined to describe the SCTB structure. On the medial plateau, there were significant correlations between BMI and bone volume fraction BV/TV (r = 0.595, p = 0.004), structure model index SMI (r = -0.704 p = 0.0002), trabecular space Tb.Sp (r = 0.600, p = 0.04) and trabecular number Tb.N (r = 0.549, p = 0.01). SCTB densification during osteoarthritis is associated with a reduction in its elastic modulus, which could increase cartilage stress, and accelerate cartilage loss. SCTB densification has been shown to precede cartilage degeneration. The correlation of SCTB microarchitecture and body weight may explain why knee osteoarthritis is more common in overweight or obese patients. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
Complete list of metadatas

Cited literature [27 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01585496
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Monday, September 11, 2017 - 3:40:19 PM
Last modification on : Wednesday, August 5, 2020 - 3:01:25 AM

File

Reina_18158.pdf
Files produced by the author(s)

Identifiers

Citation

Nicolas Reina, Etienne Cavaignac, Régis Pailhe, Aymeric Pailliser, Nicolas Bonnevialle, et al.. BMI-related microstructural changes in the tibial subchondral trabecular bone of patients with knee osteoarthritis. Journal of Orthopaedic Research, Wiley, 2017, 35 (8), pp.1653-1660. ⟨10.1002/jor.23459⟩. ⟨hal-01585496⟩

Share

Metrics

Record views

203

Files downloads

289