Abstract
Objective: To clarify the incidence and predictive risk factors of cervical spine instabilities which may induce compression myelopathy in patients with rheumatoid arthritis (RA). Methods: Three types of cervical spine instability were radiographically categorized into "moderate" and "severe" based on atlantoaxial subluxation (AAS: atlantodental interval >3 mm versus ≥10 mm), vertical subluxation (VS: Ranawat value, 13 mm versus ≤10 mm), and subaxial subluxation (SAS: irreducible translation ≥2 mm versus ≥4 mm or at multiple). 228 "definite" or "classical" RA patients (140 without instability and 88 with "moderate" instability) were prospectively followed for >5 years. The endpoint incidence of "severe" instabilities and predictors for "severe" instability were determined. Results: Patients with baseline "moderate" instability, including all sub-groups (AAS+ [VS- SAS-], VS+ [SAS- AAS ±], and SAS+ [AAS± VS ±]), developed "severe" instabilities more frequently (33.3% with AAS+, 75.0% with VS+, and 42.9% with SAS+) than those initially without instability (12.9%; p<0.003, p<0.003, and p = 0.061, respectively). The incidence of cervical canal stenosis and/or basilar invagination was also higher in patients with initial instability (17.5% with AAS+, 37.5% with VS+, and 14.3% with SAS+) than in those without instability (7.1%; p = 0.028, p<0.003, and p = 0.427, respectively). Multivariable logistic regression analysis identified corticosteroid administration, Steinbrocker stage III or IV at baseline, mutilating changes at baseline, and the development of mutilans during the follow-up period correlated with the progression to "severe" instability (p<0.05). Conclusions: This prospective cohort study demonstrates accelerated development of cervical spine involvement in RA patients with pre-existing instability - especially VS. Advanced peripheral erosiveness and concomitant corticosteroid treatment are indicators for poor prognosis of the cervical spine in RA.
| Original language | English |
|---|---|
| Article number | e88970 |
| Journal | PLoS One |
| Volume | 9 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2014 Feb 18 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Medicine(all)
Cite this
Accelerated development of cervical spine instabilities in rheumatoid arthritis : A prospective minimum 5-year cohort study. / Yurube, Takashi; Sumi, Masatoshi; Nishida, Kotaro; Miyamoto, Hiroshi; Kohyama, Kozo; Matsubara, Tsukasa; Miura, Yasushi; Hirata, Hiroaki; Sugiyama, Daisuke; Doita, Minoru.
In: PLoS One, Vol. 9, No. 2, e88970, 18.02.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Accelerated development of cervical spine instabilities in rheumatoid arthritis
T2 - A prospective minimum 5-year cohort study
AU - Yurube, Takashi
AU - Sumi, Masatoshi
AU - Nishida, Kotaro
AU - Miyamoto, Hiroshi
AU - Kohyama, Kozo
AU - Matsubara, Tsukasa
AU - Miura, Yasushi
AU - Hirata, Hiroaki
AU - Sugiyama, Daisuke
AU - Doita, Minoru
PY - 2014/2/18
Y1 - 2014/2/18
N2 - Objective: To clarify the incidence and predictive risk factors of cervical spine instabilities which may induce compression myelopathy in patients with rheumatoid arthritis (RA). Methods: Three types of cervical spine instability were radiographically categorized into "moderate" and "severe" based on atlantoaxial subluxation (AAS: atlantodental interval >3 mm versus ≥10 mm), vertical subluxation (VS: Ranawat value, 13 mm versus ≤10 mm), and subaxial subluxation (SAS: irreducible translation ≥2 mm versus ≥4 mm or at multiple). 228 "definite" or "classical" RA patients (140 without instability and 88 with "moderate" instability) were prospectively followed for >5 years. The endpoint incidence of "severe" instabilities and predictors for "severe" instability were determined. Results: Patients with baseline "moderate" instability, including all sub-groups (AAS+ [VS- SAS-], VS+ [SAS- AAS ±], and SAS+ [AAS± VS ±]), developed "severe" instabilities more frequently (33.3% with AAS+, 75.0% with VS+, and 42.9% with SAS+) than those initially without instability (12.9%; p<0.003, p<0.003, and p = 0.061, respectively). The incidence of cervical canal stenosis and/or basilar invagination was also higher in patients with initial instability (17.5% with AAS+, 37.5% with VS+, and 14.3% with SAS+) than in those without instability (7.1%; p = 0.028, p<0.003, and p = 0.427, respectively). Multivariable logistic regression analysis identified corticosteroid administration, Steinbrocker stage III or IV at baseline, mutilating changes at baseline, and the development of mutilans during the follow-up period correlated with the progression to "severe" instability (p<0.05). Conclusions: This prospective cohort study demonstrates accelerated development of cervical spine involvement in RA patients with pre-existing instability - especially VS. Advanced peripheral erosiveness and concomitant corticosteroid treatment are indicators for poor prognosis of the cervical spine in RA.
AB - Objective: To clarify the incidence and predictive risk factors of cervical spine instabilities which may induce compression myelopathy in patients with rheumatoid arthritis (RA). Methods: Three types of cervical spine instability were radiographically categorized into "moderate" and "severe" based on atlantoaxial subluxation (AAS: atlantodental interval >3 mm versus ≥10 mm), vertical subluxation (VS: Ranawat value, 13 mm versus ≤10 mm), and subaxial subluxation (SAS: irreducible translation ≥2 mm versus ≥4 mm or at multiple). 228 "definite" or "classical" RA patients (140 without instability and 88 with "moderate" instability) were prospectively followed for >5 years. The endpoint incidence of "severe" instabilities and predictors for "severe" instability were determined. Results: Patients with baseline "moderate" instability, including all sub-groups (AAS+ [VS- SAS-], VS+ [SAS- AAS ±], and SAS+ [AAS± VS ±]), developed "severe" instabilities more frequently (33.3% with AAS+, 75.0% with VS+, and 42.9% with SAS+) than those initially without instability (12.9%; p<0.003, p<0.003, and p = 0.061, respectively). The incidence of cervical canal stenosis and/or basilar invagination was also higher in patients with initial instability (17.5% with AAS+, 37.5% with VS+, and 14.3% with SAS+) than in those without instability (7.1%; p = 0.028, p<0.003, and p = 0.427, respectively). Multivariable logistic regression analysis identified corticosteroid administration, Steinbrocker stage III or IV at baseline, mutilating changes at baseline, and the development of mutilans during the follow-up period correlated with the progression to "severe" instability (p<0.05). Conclusions: This prospective cohort study demonstrates accelerated development of cervical spine involvement in RA patients with pre-existing instability - especially VS. Advanced peripheral erosiveness and concomitant corticosteroid treatment are indicators for poor prognosis of the cervical spine in RA.
UR - http://www.scopus.com/inward/record.url?scp=84895871532&partnerID=8YFLogxK
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U2 - 10.1371/journal.pone.0088970
DO - 10.1371/journal.pone.0088970
M3 - Article
VL - 9
JO - PLoS One
JF - PLoS One
SN - 1932-6203
IS - 2
M1 - e88970
ER -