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Abstract Number: 703

Performance of a New Spinal Mobility Index for Patients with Axial Spondyloarthritis

Graciela Betancur1, Fernando Andres Sommerfleck2, Ana Lizarraga1, Natalia Zamora3, Maria Celeste Orozco3, Susana Gagliardi4, Emilce Schneeberger5 and Gustavo Citera5, 1Reumatologia, Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina, 2Rheumatologia, Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina, 3Rheumatology, Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina, 4Rheumatology, Instituto de Rehabilitación Psicofísica, CABA, Argentina, 5Rheumatology Section, Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina

Meeting: 2016 ACR/ARHP Annual Meeting

Date of first publication: September 28, 2016

Keywords: axial spondyloarthritis and clinical research

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Session Information

Date: Sunday, November 13, 2016

Title: Spondylarthropathies and Psoriatic Arthritis – Clinical Aspects and Treatment - Poster I: Axial and Peripheral Spondyloarthritis – Clinical Aspects, Imaging and Treatment

Session Type: ACR Poster Session A

Session Time: 9:00AM-11:00AM

Background/Purpose:  ASAS recommends using BASMI for evaluation of axial mobility in patients with Axial Spondyloarthritis (axSpA). The EDASMI (Edmonton Ankylosing Spondylitis Metrology Index) is another index of spinal mobility which includes cervical rotation (CR), chest expansion (CE), lumbar flexion (LF) and internal rotation of the hips (IRH). This method does not require the use of goniometer, it would be less influenced by the position of the cervical spine and includes the measurement of chest expansion, which is not consider by BASMI. Our objective was to evaluate the performance of EDASMI in patients with axSpA.

Methods: Patients with axSpA ≥18 years old according mNY 1984 AS and/or ASAS 2009 axSpA criteria belonging to ESPAXIA (Estudio de Espondiloartritis Axial, IREP Argentina) cohort were studied. Data regarding sociodemographic characteristics (age, sex), disease duration, treatment, disease activity (BASDI, ASDAS-ESR, SASDAS, global patient VAS), functional capacity (BASFI), quality of life (ASQoL), enthesitis (MASES), tender and swollen 44/46 joint count, CRP and ESR were assessed. Axial mobility using a measuring tape and goniometer whenever appropriate was performed by a single trained physician and included all measures for calculating BASMI-2, BASMI-10 and EDASMI. The time to perform and calculate both indexes was evaluated. X-rays from cervical and lumbar spine, pelvis and sacroiliac joints were taken and scored by mSASSS and BASRI, by a blinded reader.

Results: 30 patients were included, 86.7% male, with a median age of 48 years (IQR 34.7-56.2) and a median disease duration of 24.5 (IQR 16.7-32.5). 90.9% were HLA-B27 positive. Measurements of axial mobility: median BASMI-2 was 5 (IQR 3-7), median BASMI-10 4.8 (IQR 3.7-6.5) and median EDASMI 12 (IQR 8.7-13.2). EDASMI had very good correlation with BASMI-2 and BASMI-10 (Rho= 0.80 and Rho= 0.84, respectively p= 0.0001) and good correlation with mSASSS (Rho= 0.5, p= 0.006) and BASRI (Rho= 0.5, p= 0.004) and did not correlate with BASDAI, SASDAS-ESR, SASDAS-CRP, BASFI, ASQoL and morning stiffness. BASMI-2 and BASMI-10 had similar performance to that observed with the EDASMI. The mean time for measurement was significantly lower with EDASMI, compared with BASMI-2 and BASMI-10 (1.8 ±0.23 minutes vs 2.64 ±0.23 and 2.67 ±0.34 minutes, p= 0.02 and 0.01, respectively).

Conclusion: EDASMI is a valid alternative index to measure the axial mobility in patients with axSpA. It incorporates the measurement of chest expansion. It is easy to perform and calculate and does not require the use of a goniometer.


Disclosure: G. Betancur, None; F. A. Sommerfleck, None; A. Lizarraga, None; N. Zamora, None; M. C. Orozco, None; S. Gagliardi, None; E. Schneeberger, None; G. Citera, None.

To cite this abstract in AMA style:

Betancur G, Sommerfleck FA, Lizarraga A, Zamora N, Orozco MC, Gagliardi S, Schneeberger E, Citera G. Performance of a New Spinal Mobility Index for Patients with Axial Spondyloarthritis [abstract]. Arthritis Rheumatol. 2016; 68 (suppl 10). https://acrabstracts.org/abstract/performance-of-a-new-spinal-mobility-index-for-patients-with-axial-spondyloarthritis/. Accessed .
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