Diagnostic/Classification Criteria

Diagnostic criteria are used, as the name suggests, to make diagnosis of disease. They should encompass those characteristics that we find in every patient with the disease they are designed for. Therefore, it is extremely difficult to design such criteria. Classification criteria, on the other hand, are intended to be used only in already diagnosed patients, to classify them as having the respective disease, mainly for research purposes. Nevertheless, since classification criteria encompass those characteristics of the disease that are present in the majority of patients, it is only natural to try to use them as a helping tool in the diagnostic endeavor. This should be done appropriately, bearing in mind that the patient not fulfilling every one of them, can and may be still diagnosed as having ankylosing spondylitis, even though he/she cannot be classified as such. Classification criteria for ankylosing spondylitis (AS) have changed over time, due to the new insight obtained into the pathogenic mechanisms of the disease. Moreover, a patient fulfilling them is sometimes the initial step mandated by the paying authorities for reimbursement of therapies. All these reasons and others highlight the need to understand the different facets of the diagnostic/classification criteria and their best use

Musculoskeletal and Nerve Ultrasonography

Musculoskeletal ultrasound had gained more and more importance lately and there is no doubt now about its role in the diagnosis and management of rheumatic diseases such as rheumatoid arthritis, spondyloarthritis, osteoarthritis and crystal related arthropathies. We can say that now, US is a widely available, non-invasive, and cost-effective technique suitable for the evaluation of the articular and periarticular structures, such as joints, tendons, muscles, ligaments, and bursa. The real-time capabilities of the US allow continuous observation of those structures during movement and of the needle placement during musculoskeletal interventions. More than this, recently, ultrasonography (US) has gained its rights in the evaluation of Sjogren syndrome and giant cell arteritis. Thus, US can detect changes secondary to both inflammatory joint diseases, like synovitis, tenosynovitis or enthesitis, and to degenerative disease, like osteophytes or tendinosis. US can identify calcium pyrophosphate and urate deposits at the level of the cartilage and tendons and to recognize the changes at the level of the salivary glands in the context of the Sjogren’s syndrome and the ones at the level of the temporal artery, secondary to giant cell arteritis

The effect of glucosamine, chondroitin and harpagophytum procumbens on femoral hyaline cartilage thickness in patients with knee osteoarthritis– An MRI versus ultrasonography study

Background: the evaluation of cartilage thickness has become possible with new techniques such as musculoskeletal ultrasonography (US) and magnetic resonance imagining (MRI), making the evaluation of the treatment response and the progression of the disease more accurate. Objective: to evaluate the efficacy of a Symptomatic Slow Acting Drug for Osteoarthritis using both US and MRI for measuring cartilage thickness at baseline and after 1 year. Methods: The study included the clinical evaluation of 20 patients at baseline, at 6 and 12 months as well as imaging exams (US and MRI) at baseline and after 1 year. Measurements were performed in both knees, in lateral and medial condyles, and in the intercondylar area. After the baseline visit, patients underwent a SYSADOA treatment which included Harpagophytum procumbens (HPc) administered on a daily basis, in a specific regimen. Results and discussions: The US examination permitted the detailed evaluation of the femoral hyaline cartilage thickness, with statistically significant differences before and after treatment at the level of the medial compartment, both in the dominant (1.59±0.49 vs. 1.68±0.49, p=0.0013) and non-dominant knee (1.73±0.53 vs. 1.79±0.52, p=0.0106). The US and the MRI correlated well (r=0.63) and showed no radiographic progression in knee osteoarthritis after one year of treatment with specific SYSADOA. Moreover, the US showed improvement in the cartilage thickness of the medial compartment. Conclusions: The combination with HPc could increase the delay in the radiographic progression of the knee osteoarthritis, with improvement of femoral hyaline cartilage thickness in the medial and lateral compartment. The US might be an important tool in OA evaluation and monitoring

Diagnostic Challenges and Management Update in Rheumatoid Arthritis

Rheumatoid arthritis is a chronic, systemic inflammatory disease, with certain evidence of multiple factors involved, but also with the strong autoimmune component, leading to a high potential for disability, through synovial inflammation and joint destruction. Diagnostic methods and management possibilities have recently improved, thus leading to a better outcome, based on the treat to target recommendation. Although biologic agents represent efficient therapeutic agents, in the last few years, the advances in understanding the mediators involved in rheumatoid arthritis pathogenesis have provided new targeted therapies, represented by small molecule inhibitors against the Janus kinases that contribute in the signaling pathways of various cytokine receptors

The effect of glucosamine, chondroitin and harpagophytum procumbens on femoral hyaline cartilage thickness in patients with knee osteoarthritis– An MRI versus ultrasonography study

Background: the evaluation of cartilage thickness has become possible with new techniques such as musculoskeletal ultrasonography (US) and magnetic resonance imagining (MRI), making the evaluation of the treatment response and the progression of the disease more accurate. Objective: to evaluate the efficacy of a Symptomatic Slow Acting Drug for Osteoarthritis using both US and MRI for measuring cartilage thickness at baseline and after 1 year. Methods: The study included the clinical evaluation of 20 patients at baseline, at 6 and 12 months as well as imaging exams (US and MRI) at baseline and after 1 year. Measurements were performed in both knees, in lateral and medial condyles, and in the intercondylar area. After the baseline visit, patients underwent a SYSADOA treatment which included Harpagophytum procumbens (HPc) administered on a daily basis, in a specific regimen. Results and discussions: The US examination permitted the detailed evaluation of the femoral hyaline cartilage thickness, with statistically significant differences before and after treatment at the level of the medial compartment, both in the dominant (1.59±0.49 vs. 1.68±0.49, p=0.0013) and non-dominant knee (1.73±0.53 vs. 1.79±0.52, p=0.0106). The US and the MRI correlated well (r=0.63) and showed no radiographic progression in knee osteoarthritis after one year of treatment with specific SYSADOA. Moreover, the US showed improvement in the cartilage thickness of the medial compartment. Conclusions: The combination with HPc could increase the delay in the radiographic progression of the knee osteoarthritis, with improvement of femoral hyaline cartilage thickness in the medial and lateral compartment. The US might be an important tool in OA evaluation and monitoring

OP0319 DIAGNOSTIC ACCURACY OF ULTRASOUND IN CALCIUM PYROPHOSPHATE DEPOSITION DISEASE: PRELIMINARY RESULTS OF THE OMERACT US IN CPPD SUB-GROUP

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Reliability assessment of ultrasound muscle echogenicity in patients with rheumatic diseases: Results of a multicenter international web-based study

ObjectivesTo investigate the inter/intra-reliability of ultrasound (US) muscle echogenicity in patients with rheumatic diseases.MethodsForty-two rheumatologists and 2 radiologists from 13 countries were asked to assess US muscle echogenicity of quadriceps muscle in 80 static images and 20 clips from 64 patients with different rheumatic diseases and 8 healthy subjects. Two visual scales were evaluated, a visual semi-quantitative scale (0–3) and a continuous quantitative measurement (“VAS echogenicity,” 0–100). The same assessment was repeated to calculate intra-observer reliability. US muscle echogenicity was also calculated by an independent research assistant using a software for the analysis of scientific images (ImageJ). Inter and intra reliabilities were assessed by means of prevalence-adjusted bias-adjusted Kappa (PABAK), intraclass correlation coefficient (ICC) and correlations through Kendall’s Tau and Pearson’s Rho coefficients.ResultsThe semi-quantitative scale showed a moderate inter-reliability [PABAK = 0.58 (0.57–0.59)] and a substantial intra-reliability [PABAK = 0.71 (0.68–0.73)]. The lowest inter and intra-reliability results were obtained for the intermediate grades (i.e., grade 1 and 2) of the semi-quantitative scale. “VAS echogenicity” showed a high reliability both in the inter-observer [ICC = 0.80 (0.75–0.85)] and intra-observer [ICC = 0.88 (0.88–0.89)] evaluations. A substantial association was found between the participants assessment of the semi-quantitative scale and “VAS echogenicity” [ICC = 0.52 (0.50–0.54)]. The correlation between these two visual scales and ImageJ analysis was high (tau = 0.76 and rho = 0.89, respectively).ConclusionThe results of this large, multicenter study highlighted the overall good inter and intra-reliability of the US assessment of muscle echogenicity in patients with different rheumatic diseases

CRPS DIAGNOSIS BASED ON INFLAMMATION MARKER ANALYSIS

Objectives. The biological markers that can indicate specifically and sensitively the absence or presence of a certain condition or its state can be used for diagnostic support and disease monitoring. Thus, this research set out to study the changes in neuropeptides (substance P and calcitonin gene-related peptide) pro-inflammatory (TNFα, IL-1β and IL-6) and anti-inflammatory (IL-10) cytokine levels in the blood of patients with CRPS. Material and methods. Sixty patients were enlisted from the local Rheumatology Clinic of the Emergency County Hospital of Craiova and split into two groups (acute and chronic). CRPS related symptoms were estimated by means of the Neuropathic Pain Questionnaire. The quantification of cytokines and neuropeptides in blood was achieved using the high sensitivity colorimetric ELISA method. Outcomes. Cytokine analysis led to statistically insignificant results, while for the neuropeptides we obtained significantly increased values in the patient groups. ROC curves were used to assess the diagnostic accuracy of the neuropeptides both returning good AUC values. Conclusions. Our results indicate that the neuropeptide (substance P and calcitonin gene-related peptide) profile has a good diagnostic sensitivity. A limitation of the study is the low number of patients in the acute group, including more patients in this phase might offer more insights on the cytokines’ role, as they could be increased in comparison to chronic patients, due to their short half-life and low acting concentrations

DIFFERENTIAL DIAGNOSIS BETWEEN STATIN MYOTOXICITY AND INFLAMMATORY MYOSITIS – CASE PRESENTATION

Inflammatory myopathies, include polymyositis, dermatomyositis, inclusion body myositis and necrotising myopathy, but their diagnosis requires a comprehensive differential, in order to optimise treatment and to have the best outcome. One of the most controversial diagnosis in this situation is drug related myotoxicity, since the symptoms may vary significantly, but usually include muscle weakness and myalgia accompanied by elevated creatine kinase serum levels Patient background. We report a case of a 70 year-old patient, treated with statins, with onset of symptoms since one year with tolerable myalgia, accompanied by mild muscle weakness shortly after and progressive worsening in the last couple of months. Interruption of statins was recommended based on current symptoms and elevated muscle enzymes: creatine kinase (CK) x3 fold and aspartate aminotransferase (AST) x2 fold normal range. Investigations. Autoimmunity panel including anti-nuclear and 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) antibodies was negative. The needle EMG was abnormal, with diffuse fibrillation potentials in almost all investigated sites, both in the proximal and distal muscles. Complex repetitive discharges were also observed in most muscles tested. Existence of clear myogenic signs on needle EMG revealed the probable cause for the clinical presentation as being myogenic in nature. Discussion. Statin-induced myopathy (SIM) is typically self-limited showing remission in the following weeks or months after statin cessation. Although EMG studies support the presence of typical myopathy features in SIM, it cannot point-out specific changes attributed to a statin-related dysfunction. Patient outcome was favorable on hospital discharge. On a two week check-up, she reported improvement in muscle strength, range of motion and remitted myalgia. Repeated blood work showed a descending trend in both CK and AST, with values in normal range. Conclusions. The clinical case, the whole algorithm of clinical evaluation and paraclinical tests that lead to final diagnosis and the literature review, highlight the importance of an exhaustive approach. Electrophysiology tests offer important aid to the physician in the approach of patients with an underlying toxic myopathy in initial diagnosis, follow-up and biopsy yield if necessary