Background The objective of the study was to assess clinical and imaging features of rheumatoid arthritis associated with atlantoaxial dislocation (RA‐AAD) in comparison to RA without AAD (RA‐C) and to identify the associated factors to AAD. Methods This was a retrospective comparative study including RA patients over 18 years old. The control group of RA‐C was matched according to age (±2 years), gender, and RA duration (±2 years). General data, RA characteristics, AAD features, and treatment modalities were recorded. Statistical analysis was performed to determine the predictive factors of AAD. Results A total of 120 patients were included (78 RA‐AAD and 42 RA‐C); sex‐ratio was 0.15. Mean age was 58.55 ± 9.14 years (RA‐AAD) versus 60.43 ± 10.78 years (RA‐C), (p = 0.31). Regarding RA features, RA‐AAD patients have significantly a higher rheumatoid factor (RF) rate (p = 0.002), extra‐articular manifestations (p = 0.009) especially osteoporosis (p < 10−3), eye involvement (p = 0.02), coxitis (p < 0.0001), Disease Activity Score (DAS28) (p < 10−3), and global health status scale (HAQ) (p = 0.003). X‐ray analysis showed pathologic PADI (<14 mm) in 51.6% of cases. The AADI was pathological (>3 mm) in 100% of patients with the following distribution: 67.9% between (3–6 mm) and 23.3% between (6–9 mm). Atlantoaxial dislocation (AAD) was presumed anterior (85.4%), lateral (7.3%) and rotatory (7.3%). The abnormalities observed on magnetic resonance imaging (MRI) were: C1–C2 synovitis (61%), confirmed AAD (34.1%) and basilar impression (4.9%). AAD diagnosed by cervical MRI was anterior in 89.8% of cases, lateral (5.3%) and with a double ascending and anterior component in 4.9% of cases. An immobilisation with a type C4 cervical collar was indicated for all the patients and five of them had boluses of corticosteroid (methylprednisolone 1 g/day) for three consecutive days. C1–C2 arthrodesis by trans‐articular screwing was performed in four patients with neurological signs or pathological measurements on cervical MRI. The outcome was favourable in 100% of cases after surgical treatment with improvement in neck pain and neurological condition within a mean decline of 4 ± 3 years [1–7]. Multivariate analysis identified coxitis, osteoporosis, high baseline DAS28, and a high rate of RF positivity as predictive factors of AAD. Conclusion Our results confirmed that predictive factors of AAD were related to higher disease activity and structural damage. These modifiable factors may be prevented by tight control, early treatment, and educating RA patients to improve treatment adherence.
Background Juvenile idiopathic arthritis (JIA) is the most common inflammatory arthritis in children. Chronic inflammation, as well as the various treatments used during JIA increase the risk of occurrence of osteoporosis (OP) and fractures. Objectives The objective of this work was to determine the frequency of OP in JIA and to investigate the factors associated with its occurrence. Methods This was a retrospective study including adults with long-standing JIA according to the International League of Associations for Rheumatology (ILAR) criteria over a period of 28 years (1994–2022). We collected sociodemographic and anthropometric parameters, clinical data, results of biological assessments, bone densitometry results and data on prescribed therapies. We compared these variables according to the bone densitometry profile to assess the factors associated with OP in JIA. Results There were 29 patients (17 females and 12 males), the mean age was 35.69 ± 11.72 [18–61] years. The mean age of disease onset was 11.10 ± 4.25 [2–16] years. The average diagnostic delay was 52.96 ± 95.97 [0–336] months. The average disease duration was 24.48 ± 12.76 [1–47] years. Three patients were smokers. The mean BMI was 21.20 ± 4.88 [14.17–27.55] kg/m2, and 4 patients had a BMI ≥ 25 kg/m². The polyarticular form was the most frequent, noted in 55.2% of cases (n = 16). NSAIDs, corticosteroids and methotrexate were prescribed in 62.1%, 69% and 79.3% of cases respectively. OP was found in 24.1% of cases (n = 7). Mean T-score values at the lumbar and femoral sites were −2.20 ± 1.22 SD and −2.31 ± 0.97 SD, respectively. Six patients suffered at least one fracture. Patients with OP had lower BMI than patients with normal bone density (17.02 ± 2.46 vs 23.91 ± 5.42; p = 0.046). Furthermore, absence of rheumatoid factor was associated with OP in our study (83.3% vs 16.7%; p = 0.008). On the other hand, the following parameters were not associated with the occurrence of OP in our study: age, gender, smoking, age at onset and duration of progression of JIA, BMI, extra-articular manifestations, CRP, antinuclear antibodies, ACPA and erosive character. Regarding the treatment received (NSAIDs, corticosteroids and methotrexate), no difference was found between patients. Conclusion Osteoporosis in JIA is common and has a prognostic impact. It must be systematically screened throughout the follow-up. In our study, OP was associated with the absence of rheumatoid factor and was more frequent in patients with low BMI.
Background Anaemia is the most frequent hematological disorder in chronic inflammatory rheumatic disease. Few studies have focused on this impairment in juvenile idiopathic arthritis (JIA). Objectives To identify the factors associated with anaemia in JIA. Methods We conducted a retrospective study including adults with long-standing JIA according to the International League of Associations for Rheumatology (ILAR) criteria over a period of 28 years (1994–2022). Demographic, clinical, biological, and radiographic data were collected. These parameters were compared according to the presence or absence of anaemia. Results Seventeen women and 12 men were enrolled. The mean age was 35.69 ± 11.72 [18–61] years. The mean age of disease onset was 11.10 ± 4.25 [2–16] years. The average diagnostic delay was 52.96 ± 95.97 [0–336] months. The average disease duration was 24.48 ± 12.76 [1–47] years. The polyarticular form was the most frequent (n = 16). Rheumatoid factor, ACPA and antinuclear antibodies were present in 41.4%, 24.1% and 17.2% of cases respectively. Mean CRP values were 42.74 ± 63.37 [2–218] mg/l, a biological inflammatory syndrome was present in 19 cases. NSAIDs, corticosteroids and methotrexate were used in 62.1% (n = 18), 69% (n = 20) and 79.3% (n = 23) respectively. Anaemia was noted in 69% (n = 20) of cases, it was hypochromic in 8 cases and microcytic in 11 cases. The mean haemoglobin value was 11.31 2.10 [6.5–15] g/dl. Anaemia was associated with the following parameters in our study: female sex (88.2% vs 41.7%; p = 0.008), absence of anti-nuclear antibodies (76.9% vs 20%; p = 0.026) and corticosteroid therapy (85% vs 33.3%; p = 0.005). However, the comparison of patients according to the presence of anaemia did not show any significant difference for these parameters: age, age at onset, diagnostic delay, duration of symptoms, extra-articular manifestations, CRP value, presence of biological inflammatory syndrome, rheumatoid factor, ACPA, erosive nature and treatment (NSAIDs and methotrexate). Conclusion Anaemia is common in JIA. Its treatment is part of the overall management of the disease.
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