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Study of vertebral fracture and Scanographic Bone Attenuation Coefficient in rheumatoid arthritis and ankylosing spondylitis vs. controls.
Sci Rep. 2019 09 16; 9(1):13323.SR

Abstract

The objective of this study is to identify the prevalence of vertebral fractures (VFs) and to measure the scanographic bone attenuation coefficient of the first lumbar vertebra (SBAC-L1) based CT-scan, a biomarker of bone fragility in patients with rheumatoid arthritis (RA) and ankylosing spondylitis (AS) and in a control group. This monocentric and retrospective study included patients with RA and AS, based on ACR/EULAR or New-York criteria, respectively. A control group was constituted. All of the patients received a CT-scan. VFs were determined via CT-scans according to the Genant classification, and the SBAC-L1 was measured in Hounsfield units (HU). SBAC-L1 ≤145 HU (fracture threshold) defined patients at risk of VFs. 244 patients were included (105 RA, 83 AS, 56 controls). Of the 4.365 vertebrae studied, 66 osteoporotic VFs were found in 36 patients: 18 (17.1%) RA, 13 (15.7%) AS and 5 (8.9%) controls. The mean SBAC-L1 was 142.2 (±48.4) HU for RA, 142.8 (±48.2) for AS, both of which were significantly lower than that of the control group (161.8 (±42.7) HU). Of the 36 patients with VFs and rheumatism, 28% had a T-score ≤-2.5 SD and 71.4% a SBAC-L1 ≤145 HU. A T-score ≤-2.5 SD and a SBAC-L1 ≤145 HU were associated with VF (OR = 3.07 (CI 95%: 1.07; 8.81), and 2.31 (CI 95%: 1.06; 5.06)), respectively. The SBAC-L1 was significantly lower in the RA and AS groups than in the control group. Furthermore, SBAC-L1 ≤145 HU was associated with a higher risk of VFs, with an odds ratio similar to that of a DXA.

Authors+Show Affiliations

Department of Rheumatology, University Hospital, Nancy, France. marine.fauny@aliceadsl.fr.Pôle S2R, PARC, University Hospital, Vandoeuvre lès Nancy, France. University of Lorraine, Faculty of Medicine, InSciDens, Vandoeuvre lès Nancy, France. CNRS, Institute Elie Cartan de Lorraine, UMR 7502, Vandoeuvre-lès-Nancy, F-54506, France.Department of Rheumatology, University Hospital, Nancy, France.Department of Rheumatology, University Hospital, Nancy, France.Department of Rheumatology, University Hospital, Nancy, France.Department of Rheumatology, University Hospital, Nancy, France.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31527613

Citation

Fauny, Marine, et al. "Study of Vertebral Fracture and Scanographic Bone Attenuation Coefficient in Rheumatoid Arthritis and Ankylosing Spondylitis Vs. Controls." Scientific Reports, vol. 9, no. 1, 2019, p. 13323.
Fauny M, Albuisson E, Bauer E, et al. Study of vertebral fracture and Scanographic Bone Attenuation Coefficient in rheumatoid arthritis and ankylosing spondylitis vs. controls. Sci Rep. 2019;9(1):13323.
Fauny, M., Albuisson, E., Bauer, E., Perrier-Cornet, J., Chary-Valckenaere, I., & Loeuille, D. (2019). Study of vertebral fracture and Scanographic Bone Attenuation Coefficient in rheumatoid arthritis and ankylosing spondylitis vs. controls. Scientific Reports, 9(1), 13323. https://doi.org/10.1038/s41598-019-49712-x
Fauny M, et al. Study of Vertebral Fracture and Scanographic Bone Attenuation Coefficient in Rheumatoid Arthritis and Ankylosing Spondylitis Vs. Controls. Sci Rep. 2019 09 16;9(1):13323. PubMed PMID: 31527613.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Study of vertebral fracture and Scanographic Bone Attenuation Coefficient in rheumatoid arthritis and ankylosing spondylitis vs. controls. AU - Fauny,Marine, AU - Albuisson,Eliane, AU - Bauer,Elodie, AU - Perrier-Cornet,Julia, AU - Chary-Valckenaere,Isabelle, AU - Loeuille,Damien, Y1 - 2019/09/16/ PY - 2019/01/03/received PY - 2019/08/16/accepted PY - 2019/9/19/entrez PY - 2019/9/19/pubmed PY - 2020/10/30/medline SP - 13323 EP - 13323 JF - Scientific reports JO - Sci Rep VL - 9 IS - 1 N2 - The objective of this study is to identify the prevalence of vertebral fractures (VFs) and to measure the scanographic bone attenuation coefficient of the first lumbar vertebra (SBAC-L1) based CT-scan, a biomarker of bone fragility in patients with rheumatoid arthritis (RA) and ankylosing spondylitis (AS) and in a control group. This monocentric and retrospective study included patients with RA and AS, based on ACR/EULAR or New-York criteria, respectively. A control group was constituted. All of the patients received a CT-scan. VFs were determined via CT-scans according to the Genant classification, and the SBAC-L1 was measured in Hounsfield units (HU). SBAC-L1 ≤145 HU (fracture threshold) defined patients at risk of VFs. 244 patients were included (105 RA, 83 AS, 56 controls). Of the 4.365 vertebrae studied, 66 osteoporotic VFs were found in 36 patients: 18 (17.1%) RA, 13 (15.7%) AS and 5 (8.9%) controls. The mean SBAC-L1 was 142.2 (±48.4) HU for RA, 142.8 (±48.2) for AS, both of which were significantly lower than that of the control group (161.8 (±42.7) HU). Of the 36 patients with VFs and rheumatism, 28% had a T-score ≤-2.5 SD and 71.4% a SBAC-L1 ≤145 HU. A T-score ≤-2.5 SD and a SBAC-L1 ≤145 HU were associated with VF (OR = 3.07 (CI 95%: 1.07; 8.81), and 2.31 (CI 95%: 1.06; 5.06)), respectively. The SBAC-L1 was significantly lower in the RA and AS groups than in the control group. Furthermore, SBAC-L1 ≤145 HU was associated with a higher risk of VFs, with an odds ratio similar to that of a DXA. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/31527613/Study_of_vertebral_fracture_and_Scanographic_Bone_Attenuation_Coefficient_in_rheumatoid_arthritis_and_ankylosing_spondylitis_vs__controls_ L2 - https://doi.org/10.1038/s41598-019-49712-x DB - PRIME DP - Unbound Medicine ER -