Ultrasound of Subtalar Joint Synovitis in Patients with Rheumatoid Arthritis: Results of an OMERACT Reliability Exercise Using Consensual Definitions

Reliability of the Pediatric Specific Musculoskeletal Ultrasound Scoring Systems for the Elbow, Wrist, and Finger Joints

OBJECTIVE

Musculoskeletal ultrasound (MSUS) is increasingly being used in the evaluation of pediatric musculoskeletal diseases. In order to provide objective assessments of arthritis, reliable MSUS scoring systems are needed. Recently, joint-specific scoring systems for arthritis of the pediatric elbow, wrist, and finger joints were proposed by the Childhood Arthritis and Rheumatology Research Alliance (CARRA) MSUS workgroup. This study aimed to assess the reliability of these scoring systems when used by sonographers with different levels of expertise.

METHODS

Members of the CARRA MSUS workgroup attended training sessions for scoring the elbow, wrist, and finger. Subsequently, scoring exercises of B mode and power Doppler (PD) mode still images for each joint were performed. Interreader reliability was determined using 2-way single-score intraclass correlation coefficients (ICCs) for synovitis and Cohen [Formula: see text] for tenosynovitis.

RESULTS

Seventeen pediatric rheumatologists with different levels of MSUS expertise (1-15 yrs) completed a 2-hour training session and calibration exercise for each joint. Excellent reliability (ICC > 0.75) was found after the first scoring exercise for all the finger and elbow views evaluated on B mode and PD mode, and for all of the wrist views on B mode. After a second training session and a scoring exercise, the wrist PD mode views reached excellent reliability as well.

CONCLUSION

The preliminary CARRA MSUS scoring systems for assessing arthritis of the pediatric elbow, wrist, and finger joints demonstrate excellent reliability among pediatric MSUS sonographers with different levels of expertise. With further validation, this reliable joint-specific scoring system could serve as a clinical tool and scientific outcome measure.

Ankle and foot pathologies in early rheumatoid arthritis, what can ultrasound tell us?

BACKGROUND

Rheumatoid arthritis (RA) is a systemic autoimmune polyarticular disease. Despite being commonly affected in RA, the ankle and foot do not receive much attention, particularly in early disease. The precise diagnosis of their involvement and its impact on health is a clinical challenge that requires accurate assessment.

AIM

To determine the role of ultrasound in evaluation of ankle and foot pathologies and assess its impact on functional activity in newly diagnosed RA patients.

METHODS

The study was conducted on 152 RA patients and 52 healthy controls. Patients were subjected to history taking, clinical examination, and ultrasound scan. Impact on health was measured by health assessment questionnaire, as well as foot function index.

RESULTS

In a cohort of patients with early RA with median duration of 1 month, tibialis posterior (TP) tenosynovitis (45.4%) was the most common pathology, followed by tibiotalar (TTJ) synovitis (39.8%), and peroneal tenosynovitis (39.1%). In terms of disease duration, TTJ (P = .001) foot pathologies were less common in early RA and tended to worsen over time, whereas TP (P = .048) and peroneal tenosynovitis (P = .011) were more common in early RA. In multivariate analysis TTJ, subtalar synovitis, forefoot pathologies, TP tenosynovitis, and Achilles enthesitis were found to be significant predictors of functional disability. The most important predictors of ankle pain were TTJ synovitis, TP tenosynovitis, peroneal tenosynovitis, and plantar fasciitis.

CONCLUSION

Ankle and foot involvement is a common issue of early RA, and it has a significant impact on quality of life. Ultrasound is a reliable tool for evaluating various abnormalities in this complex area, allowing for better management.

The EFSUMB Guidelines and Recommendations for Musculoskeletal Ultrasound - Part II: Joint Pathologies, Pediatric Applications, and Guided Procedures

The second part of the Guidelines and Recommendations for Musculoskeletal Ultrasound (MSUS), produced under the auspices of EFSUMB, following the same methodology as for Part 1, provides information and recommendations on the use of this imaging modality for joint pathology, pediatric applications, and musculoskeletal ultrasound-guided procedures. Clinical application, practical points, limitations, and artifacts are described and discussed for every joint or procedure. The document is intended to guide clinical users in their daily practice.

Patient-based reliability of the Outcome Measures in Rheumatology (OMERACT) ultrasound scoring system for salivary gland assessment in patients with Sjögren's syndrome

BACKGROUND

To assess the reliability of the consensually agreed US definitions of major salivary gland lesions and the US scoring system for salivary gland assessment in patients with SS.

METHODS

Nine experienced sonographers scanned and read the US images of both parotid glands (PGs) and submandibular glands (SMGs) in eight patients with primary and secondary SS in two rounds. A consensually agreed four-grade semi-quantitative scoring was applied in B-mode for morphological lesions: grade 0, normal; grade 1, mild inhomogeneity without anechoic or hypoechoic areas; grade 2, moderate inhomogeneity with focal anechoic or hypoechoic areas; grade 3, severe inhomogeneity with diffuse an- or hypoechoic areas occupying the entire gland or fibrous gland. The presence or absence of typical SS lesions, i.e. the Sjögren's signature, was scored binary. Intra- and interreader reliabilities were computed using weighted and unweighted Cohen's and Light's κ coefficients.

RESULTS

The mean prevalence of grades 0-3 in PG were 43, 17, 23 and 31% and 28, 14, 33 and 32% for the SMGs, respectively. The weighted κ for intrareader reliability ranged from 0.44 to 1 for grading and 0.64 to 1 for the Sjögren's signature of PG and 0.59 to 1 and -0.09 to 0.6 for SMGs, respectively. The interreader reliability κ for grading in PG was 0.62 (95% CI 0.47, 0.74) and for Sjögren's signature it was 0.36 (95% CI 0, 0.43); in SMG it was 0.62 (95% CI 0.47, 0.72) and 0.03 (95% CI 0, 0.07) respectively.

CONCLUSIONS

The consensually agreed novel US scoring system for major salivary gland lesions showed substantial intra- and interreader reliability in patients with SS. The reliability of the Sjögren's signature was moderate.

Do ankle, hindfoot, and heel ultrasound findings predict the symptomatology and quality of life in rheumatoid arthritis patients?

Objectives: To evaluate the ankle, hindfoot, and heel changes (determined by physical examination, ultrasound and baropodometry) in patients with rheumatoid arthritis, to compare the findings with healthy subjects, and to analyze if these findings are associated with ankle pain and could affect the quality of life. Methods: We enrolled 35 rheumatoid arthritis patients and 35 healthy controls, and evaluated their ankles (tibiotalar joints, tendons), hindfeet (talonavicular, subtalar joints) and heels using clinical examination, DAS28-CRP, RAPID3 for the evaluation of functional status, quality of life in rheumatoid arthritis questionnaire, ultrasound, and baropodometry. Results: The ultrasound inter-observer agreement was good for the subtalar joint, and very good for the other structures. Flat foot was identified in 50% of feet in rheumatoid arthritis patients, with 83.8% having concomitant hindfoot valgus and less subtalar joint synovitis visible from the lateral approach (32.4% vs 55.6%, p = 0.041). The body mass index, RAPID3 and subtalar synovitis were independent predictors for the symptomatic ankle (all p <0.05). Midfoot and heel plantar pressures were higher in rheumatoid arthritis patients compared to healthy controls, but when subtalar synovitis was present, the pressures decreased (avoidance of heel support). Poor quality of life in rheumatoid arthritis patients was independently predicted by DAS28-CRP, RAPID3, disease stage, hindfoot valgus, tibiotalar and subtalar synovitis, tendon pathology, Achilles tendon enthesophytes, calcaneal erosions, plantar fasciitis, and perifasciitis (all p <0.05). Conclusion: The quality of life of rheumatoid arthritis patients is significantly affected by ankle and hindfoot pathology (inflammatory modifications, but also degenerative findings and deformities). Ultrasound scanning is an important tool in the evaluation of inflammatory and degenerative lesions in these regions, and their early detection might contribute to a better therapeutic management in these patients.

Objectives: To evaluate the ankle, hindfoot, and heel changes (determined by physical examination, ultrasound and baropodometry) in patients with rheumatoid arthritis, to compare the findings with healthy subjects, and to analyze if these findings are associated with ankle pain and could affect the quality of life. Methods: We enrolled 35 rheumatoid arthritis patients and 35 healthy controls, and evaluated their ankles (tibiotalar joints, tendons), hindfeet (talonavicular, subtalar joints) and heels using clinical examination, DAS28-CRP, RAPID3 for the evaluation of functional status, quality of life in rheumatoid arthritis questionnaire, ultrasound, and baropodometry. Results: The ultrasound inter-observer agreement was good for the subtalar joint, and very good for the other structures. Flat foot was identified in 50% of feet in rheumatoid arthritis patients, with 83.8% having concomitant hindfoot valgus and less subtalar joint synovitis visible from the lateral approach (32.4% vs 55.6%, p = 0.041). The body mass index, RAPID3 and subtalar synovitis were independent predictors for the symptomatic ankle (all p <0.05). Midfoot and heel plantar pressures were higher in rheumatoid arthritis patients compared to healthy controls, but when subtalar synovitis was present, the pressures decreased (avoidance of heel support). Poor quality of life in rheumatoid arthritis patients was independently predicted by DAS28-CRP, RAPID3, disease stage, hindfoot valgus, tibiotalar and subtalar synovitis, tendon pathology, Achilles tendon enthesophytes, calcaneal erosions, plantar fasciitis, and perifasciitis (all p <0.05). Conclusion: The quality of life of rheumatoid arthritis patients is significantly affected by ankle and hindfoot pathology (inflammatory modifications, but also degenerative findings and deformities). Ultrasound scanning is an important tool in the evaluation of inflammatory and degenerative lesions in these regions, and their early detection might contribute to a better therapeutic management in these patients.

Prevalence of Elbow Joint Arthritis and Enthesitis in Rheumatoid Arthritis

OBJECTIVES

The prevalence of elbow joint arthritis in rheumatoid arthritis (RA) assessed by ultrasound has not yet been investigated.

METHODS

We investigated 102 patients with RA and 50 patients without rheumatological disease. Both elbow joints were examined by ultrasound for effusion, hypervascularization, and enthesitis. A clinical examination was performed, and Disease Activity Score in 28 joints (DAS28), and visual analog scale for pain (VASp) were recorded. Arthritis was defined as joint effusion (≥grade II) and synovial hyperperfusion.

RESULTS

The RA cohort versus the control group displayed a joint effusion in 54.9% vs. 6.9%, a hypervascularization in 6.8% vs. 0%. Arthritis was detected in 36 RA patients (35.29%) and no one in the control group. Four (3.8%) RA patients and one (1%) control displayed enthesitis. The RA cohort showed a significant correlation between movement restriction and joint effusion (p-value = 0.001) as well as DAS28 (p-value = 0.02) and between DAS28 and ultrasound detected arthritis (p-value = 0.022). In an overall analysis, a highly significant correlation of VASp with movement restriction (MR) (p-value ≤ 0.001), the presence of joint effusion (p-value ≤ 0.001), and the diagnosis of RA (p-value ≤ 0.001) were observed. Interrater analysis of ultrasound imaging showed good agreement with Cohen's kappa of 0.896.

CONCLUSION

The prevalence of elbow arthritis in RA seems to be high, with 35.29%. Movement restriction is a good indicator, but not in all RA patients (32 vs. 70 patients without MR) compared to the control group (5 vs. 45 patients without MR). Reported pain correlates with joint effusion and MR (p-value ≤ 0.001).