Sternoclavicular Joint Involvement in Rheumatoid Arthritis: Clinical and Ultrasound Findings of a Neglected Joint

Ultrasound findings of the sternoclavicular and shoulder joints in patients on maintenance hemodialysis

INTRODUCTION

Ultrasonographic examination of joints is a non-invasive method to detect and monitor Dialysis-associated amyloidosis (DRA).

METHODS

An ultrasonographic examination of the sternoclavicular (SC) and shoulder joints was performed in patients on maintenance hemodialysis (MHD) and those with normal renal function in the control group. The maximum distance (D) of SC, the rotator cuff thickness (RCs), and the echogenic pads (EPs) of the shoulder were evaluated.

RESULTS

Compared with the control group, the MHD group had a higher D of SC, a higher proportion of RCs ≥8 mm, and a higher proportion of EPs positive. Adjust for age and Kt/V, the D of SC was positively related to dialysis vintage, standardized coefficients β = 0.329, p = 0.004. A significant positive correlation existed between the D of SC and the RCs.

CONCLUSION

In addition to the shoulder joint, the sternoclavicular is a suitable site for ultrasonographic detection of DRA.

Anterior Chest Wall Non-traumatic Arthropathies: A Crucial but Often Overlooked Site

OBJECTIVE

The purpose of this study was to describe the distribution of Anterior Chest Wall (ACW) arthropathies in a tertiary care center and identify clinical, biological and imaging findings to differentiate osteoarthritis (OA) from non-osteoarthritis (N-OA) etiologies.

METHODS

Search from medical records from January 2009 to April 2022, including patients with manubriosternal and/or sternoclavicular and/or sternocostal joint changes confirmed by ultrasonography, computed tomography or magnetic resonance imaging. The final study group was divided into OA and N-OA subgroups.

RESULTS

A total of 108 patients (34 males and 74 females, mean age: 47.3 ± 13 years) were included. Twenty patients had findings of OA, while 88 were diagnosed with N-OA pathologies. SpA was the most common etiology in the N-OA group (n = 75). The other N-OA etiologies were less common: rheumatoid arthritis (n = 4), Synovitis, acne, pustulosis, hyperostosis, osteitis (SAPHO) syndrome (n = 3), infectious arthritis (n = 3) and microcrystalline arthropathies (n = 3). Regarding the distinctive features, ACW pain was the inaugural manifestation in 50% of patients in OA group and 18.2% of patients in N-OA group (p = 0.003); high inflammatory biomarkers were more common in N-OA group (p = 0.033). Imaging findings significantly associated with OA included subchondral bone cysts (p < 0.001) and intra-articular vacuum phenomenon (p < 0.001), while the presence of erosions was significantly associated with N-OA arthropathies (p = 0.019). OA was independently predicted by the presence of subchondral bone cysts (p = 0.026).

CONCLUSION

ACW pain is a common but often underestimated complaint. Knowledge of the different non-traumatic pathologies and differentiation between OA and N-OA etiologies is fundamental for appropriate therapeutic management.

The reliability of Juvenile Arthritis Magnetic Resonance Imaging Scoring system in the evaluation of the shoulder joint in juvenile idiopathic arthritis

Objectives

We aimed to evaluate shoulder joint by magnetic resonance imaging (MRI) using the Juvenile Arthritis Magnetic Resonance Imaging Scoring (JAMRIS) system in children with juvenile idiopathic arthritis (JIA) and to compare clinical, laboratory parameters and disease activity scores with MRI parameters.

Patients and methods

A total of 32 shoulder joints of 20 patients (16 males, 4 females; mean age: 8.9±3.5 years; range, 2.5 to 14 years) with a known diagnosis of JIA and a clinical suspicion of shoulder joint involvement and underwent MRI were included. Reliability was determined by inter- and intra-observer correlation coefficients. Correlation of the clinical and laboratory parameters with JAMRIS scores was done using the non-parametric tests. Sensitivity of clinical examination to detect shoulder joint arthritis was also determined.

Results

Of the 32 joints, 27 joints in 17 patients showed MRI changes. Seven joints in five patients fulfilled the definition of clinical arthritis, all revealed MRI changes. In 25 joints without clinical arthritis, early and late MRI changes were seen in 19 (67%) and 12 (48%) joints, respectively. The inter- and intra-observer correlation coefficients for JAMRIS system were excellent. No correlation was found between MRI parameters, clinical, laboratory, and disease activity scores. The sensitivity of clinical examination to detect shoulder joint arthritis was 25.9%.

Conclusion

The JAMRIS system is reliable and reproducible to determine shoulder joint inflammation in JIA. Detection of shoulder joint arthritis by clinical examination has a poor sensitivity.

Anatomical study of the sternoclavicular joint using high-frequency ultrasound

OBJECTIVES

The purpose of the present study was to determine whether ultrasound enables assessment of sternoclavicular structures.

METHODS

A preliminary study in 3 cadavers was followed by an ultrasound study, performed by 2 musculoskeletal radiologists working in consensus, in 59 patients without history of trauma, surgery or pain in the sternoclavicular joint. The visibility, echogenicity and thickness of the sternoclavicular structures were assessed.

RESULTS

The anterior sternoclavicular ligament and the interclavicular ligament could be seen in all patients (mean thickness: 1.4 mm and 1.3 mm, respectively). The articular disc was clearly seen in 66.1% of cases, and shoulder antepulsion enabled analysis in an additional 20.3%. Intra-articular joint gas was frequent (33.89% of cases), preventing analysis of the disc in 2 patients. Only the superficial anterior aspect of the clavicular and sternal articular cartilages could be assessed. Joint effusion was seen in 6.8% of cases. Clavicular osteophytes, sternal osteophytes and bone irregularities at the anterior sternoclavicular ligament insertion were detected in 33.9%, 16.9% and 16.9% of cases, respectively.

CONCLUSION

The anterior sternoclavicular ligament, interclavicular ligament and anterior intra-articular structures can be visualized by ultrasound. This means of assessment may have clinical applications, particularly in patients with trauma or microtrauma.

Relation between pulmonary function tests and ultrasonographic changes of asymptomatic anterior chest wall joints in rheumatoid arthritis patients

Background

Ultrasonography can detect different changes in anterior chest wall (ACW) joints in patients with rheumatoid arthritis (RA) even before being clinically manifested. Airways, pleura, lung parenchyma, and vascular compartment all may be attacked by RA. This study was aiming at detecting the relation between ultrasonographic changes of asymptomatic ACW joints and pulmonary function tests (PFTs) in patients with RA.

Results

US detected subclinical changes of ACW joints in (74.2%) of RA patients with significant difference between total US changes in RA (74.2%) and control (21.2%) (p < 0.001). MSJ ankylosing and erosions were highly associated with limited chest expansion in RA group (P <0.001). Restrictive PFTs were associated with SCJ synovitis (p < 0.05), SCJ PD activity (p < 0.05), SCJ erosions (0.02), and highly associated with MSJ ankylosing and erosions (p < 0.001).

Conclusions

This study demonstrated that ultrasonographic subclinical changes in ACW joints are associated with restrictive pattern by spirometry and limited chest expansion in RA patients.

Trial registration

ClinicalTrials.gov Identifier: NCT05119491. Registered 15 November 2021—retrospectively registered.

Structural damage in rheumatoid arthritis assessed by musculoskeletal ultrasound: A systematic literature review by the Structural Joint Damage Task Force of the OMERACT Ultrasound Working Group

OBJECTIVES

To identify and synthesize the evidence for the use and measurement properties of musculoskeletal ultrasound in assessing structural joint damage in patients with rheumatoid arthritis (RA).

METHODS

A systematic literature search (SLR) of the PubMed, Embase and Cochrane Library was performed. Original articles were included published in English reporting on ultrasound of bone erosion, cartilage damage and the measurement properties of ultrasound according to the OMERACT filter 2.1.

RESULTS

Of the 1.495 identified articles 149 were included in the final review, most of which reported on cross-sectional studies and used the OMERACT definitions for ultrasonographic pathology. Among these, bone erosions were assessed in 139 (93.3%), cartilage damage in 24 (16.1%), enthesophytes in 8 (5.4%), osteophytes in 15 (10.1%) and malalignment and ankylosis in a single (0.9%) study, respectively. Most studies (126/149, 84.6%) assessed the joints of the hands. The overwhelming majority of studies (127/149, 85.2%) assessed structural joint damage bilaterally. Validity, reliability and responsiveness were assessed in 21 (14.1%), 34 (22.8%) and 17 (11.4%) studies, respectively.

CONCLUSION

While the results of this SLR suggest that ultrasound is a sensitive, reliable and feasible tool to detect damage in RA, they also highlight the need for further research and validation. Findings of this SLR will inform the next steps of the OMERACT Ultrasound Working Group in developing an ultrasound score for assessing structural joint damage in patients with RA.

Magnetic resonance imaging findings in the sternoclavicular joint in juvenile idiopathic arthritis and comparison with clinical examination

OBJECTIVE

The sternoclavicular joint (SCJ), an important link between the appendicular and axial skeleton, though involved in 41% of rheumatoid arthritis patients, has not been studied in juvenile idiopathic arthritis (JIA). Hence, this cross-sectional study was done to delineate the magnetic resonance imaging (MRI) findings in SCJ in JIA and compare with the clinical examination to diagnose SCJ arthritis.

METHODS

Of the 116 JIA patients attending the pediatric rheumatology clinic, twenty-one patients (42 SC joints) were evaluated by 1.5 T MRI using the four components of early and late inflammatory changes-synovial hypertrophy, bone marrow edema (BME), cartilage lesions, and bone erosions. Results were compared with clinical assessment of SCJ arthritis.

RESULTS

Of the 42 SCJ evaluated (21/116 patients), MRI changes were seen in 27 SCJs (15 patients, 12.9% of 116 JIA patients). Early MRI changes were seen in 60% of joints found normal on clinical examination, with as much as 1/4th of them revealing late destructive changes. Synovial hypertrophy, BME, cartilage lesions, and bone erosions were seen in 5, 15, 4, and 10 patients, respectively. Sensitivity and specificity of clinical examinations to evaluate SC joint involvement were 55.5% and 53.3%, respectively.

CONCLUSION

MRI evaluation of the SCJ in JIA revealed findings in 15/21 enrolled patients. BME, bone erosions, synovial hypertrophy, and cartilage lesions were seen in 15, 10, 5, and 4 enrolled patients, respectively. Clinical examination was found to be neither sensitive nor specific. Key Points • MRI could delineate both early and late inflammatory changes in SCJ in JIA. BME, bone erosions, synovial hypertrophy, and cartilage lesions were seen in 15, 10, 5, and 4 enrolled patients, respectively. • The frequency of SC joint involvement in JIA was at least 12.9% of patients in our study. • Clinical examination for evaluating SC joint arthritis has low sensitivity (55.5%) and specificity (53.3%).

Anterior chest wall non-traumatic diseases: a road map for the radiologist

The anterior chest wall (AWC) non-traumatic pathologies are largely underestimated, and early detection through imaging is becoming increasingly important. This paper aims to review the major non-traumatic ACW pathologies, with a particular interest in imaging features and differential diagnosis. (www.actabiomedica.it)

Ultrasound versus magnetic resonance imaging in the evaluation of shoulder joint pathologies in a cohort of rheumatoid arthritis patients

BACKGROUND

Rheumatoid arthritis (RA) is a systemic autoimmune disease that has a great impact on different joints, may result in their destruction and loss of function. Although the shoulder is affected in a large portion of patients with RA, it does not receive much attention during the follow up of RA. The precise diagnosis of shoulder pain in RA is a clinical challenge and benefits from a reliable imaging modality to detect its exact origin.

AIM

To determine the diagnostic accuracy of ultrasound (US) in detecting shoulder joint pathologies in RA, considering magnetic resonance imaging (MRI) as the gold standard.

MATERIALS AND METHODS

This cross-sectional, observational study was carried out on 30 RA patients complaining of unilateral or bilateral shoulder pain. Patients were subjected to history taking, clinical shoulder examination, plain X-ray, US examination following a standardized protocol, and MRI. The results were correlated with each other.

RESULTS

In comparison with the MRI findings, US showed high accuracy in terms of sensitivity (Sn) and specificity (Sp) in supraspinatus tendinopathy (Sn 96.6%; Sp 93.3%), biceps tenosynovitis (Sn 87.5%; Sp 97.6%), subacromial-subdeltoid bursitis (Sn 72.7%; Sp 95.7%), humeral erosions (Sn 90.5%; Sp 97.3%), and acromioclavicular osteoarthritis (Sn 85.7%; Sp 95.7%). In terms of reliability, the agreement between US and MRI was almost perfect (κ = .9, P < .001).

CONCLUSION

US may have a role as the initial imaging modality in RA patients with shoulder pain, as it is highly sensitive and specific in detecting different pathological abnormalities of the shoulder.

Successful treatment in a child with enthesitis-related arthritis involving the sternoclavicular joint: a case report

Background

Although the sternoclavicular joint (SCJ) may be involved in ankylosing spondylitis, rheumatic arthritis, and Behçet’s disease and participates in the systemic inflammatory process of arthritis, it is often neglected during routine rheumatologic clinical examinations. To the best of our knowledge, this is the first study to report etanercept treatment in juvenile idiopathic arthritis (JIA) with SCJ involvement.

Case presentation

In this study, we describe an unusual case of a child with juvenile idiopathic arthritis with an initial presentation of sternoclavicular mass. The patient (age, 14 years 10 months) presented with an insidious onset atraumatic swelling of the left SCJ and complained of right hip and bilateral ankle tenderness without an apparent cause. Initial ultrasonography indicated a heterogeneous mass in the left SCJ, while computed tomography identified mild swelling of the left SCJ with a thickened synovial lining, mild bone erosion, and some turbid fluid. The patient ultimately underwent left SCJ arthrotomy, during which tapping of the SCJ revealed 2 cc of yellowish fluid, inflammation and necrosis of tissues within the SCJ. A clear yellow joint fluid was aspirated, and testing revealed a negative culture result. The patient was diagnosed with JIA. The joint tenderness improved and erythrocyte sedimentation rate decreased after administering anti-tumor necrosis factor etanercept. An additional ultrasonography demonstrated that the initial imaging findings have been resolved. At the end of a 2-year follow-up period, the patient was completely symptom-free.

Conclusions

JIA with SCJ involvement is an uncommon presentation in adolescents. Etanercept may be a beneficial treatment for SCJ involvement in patients with JIA. The upper limbs showed no signs of limited range of motion during the follow-up period. Further studies are warranted to elucidate the efficacy of etanercept in JIA with sternoclavicular joint involvement.

Surgical management of sternoclavicular joint septic arthritis

INTRODUCTION

Infections of the sternoclavicular joint (SCJ) account for less than 1% of all joint infections. There are no standardized diagnostic and therapeutic algorithms defined in literature. This study intended to report the risk factors, the bacterial spectrum, the extent and localization and the clinical outcome of SCJ infections.

PATIENTS AND METHODS

We retrospectively reviewed the medical charts of 13 patients (8 men, five women, mean age 37.6 years) with SCJ infections between Januray 1st 2008 and October 30th 2015 for clinical parameters and radiological studies. All patients were interviewed during their follow-up along with clinical examination and assessing the Disabilities of the Arm, Shoulder and Hand questionnaire (DASH).

RESULTS

Nine patients presented with local chest pain and swelling; in 4 patients, the prevalent symptom was pain without local signs of inflammation. Full blood count revealed a mean leukocytosis of 15 × 10⁹ L and a mean CRP of 21.0 mg/dl. Approximately 61.5% reported known diabetes mellitus. 10 patients presented an involvement of surrounding structures. All patients received a preoperativ CT scan. Each patient was treated via SCJ resection without intraoperative complications. Primary wound closure was possible in all cases. The mean follow-up was 95 days. Wound culture revealed Staphylococcus aureus in all patients. Pathological examination affirmed acute osteomyelitis in 7 patients. Four patients required the intensive care of which 2 patients died from septic shock. Recurrent infection was encountered in 3 patients who underwent revision surgery. Mean DASH Score was 18.7.

CONCLUSION

CT should be routinely obtained to recognize the possible extends to the surrounding structures. SCJ resection can result in satisfactory clinical results and should be considered in cases of extended infections including the surrounding structures. Empiric antibiotic coverage should contain cephalosporin or extended-spectrum penicillin. Inappropriate or less-invasive surgical procedures may cause recurrencent infections, especially in cases of osteomyelitis.

Swellings of the sternoclavicular joint: review of traumatic and non-traumatic pathologies

The sternoclavicular joint (SCJ) is an integral part of the shoulder girdle that connects the upper limb to the axial skeleton.

Swelling of the SCJ is commonly due to trauma, degeneration, infections and other disease processes that affect synovial joints.

This review also focuses on uncommon conditions that could affect the SCJ, including SAPHO (synovitis, acne, pustulosis, hyperostosis, osteitis) syndrome, Friedrich’s disease and Tietze syndrome.

The scope of this review is limited to the analysis of the current evidence on the various conditions affecting the SCJ and also to provide an algorithm to manage these conditions.

Cite this article: EFORT Open Rev 2018;3:471-484. DOI: 10.1302/2058-5241.3.170078

Monitoring total-body inflammation and damage in joints and entheses: the first follow-up study of whole-body magnetic resonance imaging in rheumatoid arthritis

OBJECTIVE

To investigate changes in whole-body magnetic resonance imaging (WBMRI) inflammatory and structural lesions in most joints and entheses in patients with rheumatoid arthritis (RA) treated with adalimumab.

METHODS

WBMRI was obtained at weeks 0, 6, 16, and 52 in a 52 week follow-up study of 37 RA patients starting treatment with adalimumab. Readability and reliability of WBMRI were investigated for 76 peripheral joints, 23 discovertebral units, the sacroiliac joints, and 33 entheses. Changes in WBMRI joint and entheses counts were investigated.

RESULTS

The readability of peripheral and axial joints was 82-100%, being less for elbows and small joints of the feet. For entheses, 72-100% were readable, except for entheses at the anterior chest wall, elbow, knee, and plantar fascia. The intrareader agreement was high for bone marrow oedema (BMO), bone erosion (80-100%), and enthesitis (77-100%), and slightly lower for synovitis and soft tissue inflammation (50-100%). All synovitis, BMO, and soft tissue inflammation counts decreased numerically during treatment. The 26-joint synovitis WBMRI count decreased significantly during the first 16 weeks for patients with a good European League Against Rheumatism (EULAR) response (from median 6 to 4, p < 0.05), but not for patients with a moderate or no EULAR response. There were no overall changes in structural lesions.

CONCLUSIONS

WBMRI allows simultaneous monitoring of most axial and peripheral joints and entheses in RA patients and can visualize a decrease in inflammatory counts during treatment. This first WBMRI follow-up study of patients with RA encourages further investigation of the usefulness of WBMRI in RA.

Summary Findings of a Systematic Literature Review of the Ultrasound Assessment of Bone Erosions in Rheumatoid Arthritis

OBJECTIVE

Bone erosions in rheumatoid arthritis (RA) have been studied in an increasing amount of research. Both earlier and present classification criteria of RA contain erosions as a significant classification component. Ultrasound (US) can detect bone changes in accessible surfaces. Therefore, the study group performed a systematic literature review of assessment of RA bone erosions with US.

METHODS

A systematic search of PubMed and Embase was performed. Data on the definitions of RA bone erosions, their size, scoring, relation to synovitis, comparators, and elements of the OMERACT (Outcome Measures in Rheumatology Clinical Trials) filter were collected and analyzed.

RESULTS

The selection process identified 58 original research papers. The assessed joints were most frequently metacarpophalangeal (MCP; 41 papers), proximal interphalangeal (19 papers), and metatarsophalangeal joints (MTP; 18 papers). The OMERACT definition of RA bone erosion on US was used most often (17 papers). Second and fifth MCP and fifth MTP were recommended as target joints. Conventional radiography was the most frequently used comparator (27 papers), then magnetic resonance imaging (17 papers) and computed tomography (5 papers). Reliability of assessment was presented in 20 papers and sensitivity to change in 11 papers.

CONCLUSION

This paper presents results of a systematic literature review of bone erosion assessment in RA with US. The survey suggests that US can be a helpful adjunct to the existing methods of imaging bone erosions in RA. It analyzes definitions, scoring systems, used comparators, and elements of the OMERACT filter. It also presents recommendations for a future research agenda based on the results of the review.

Sonographically guided sternoclavicular joint injection: description of technique and validation

OBJECTIVES

The primary purpose of this investigation was to describe and validate a sonographically guided technique for injecting the sternoclavicular joint (SCJ) using a cadaveric model.

METHODS

A single experienced operator (J.S.) completed 13 sonographically guided SCJ injections on 7 unembalmed cadaveric specimens (4 male and 3 female) using an out-of-plane, caudad-to-cephalad technique to place 1 mL of diluted blue latex into the joint. Within 72 hours, study coinvestigators dissected each specimen to determine the injectate location.

RESULTS

All 13 injections accurately placed latex into the SCJ with a predilection for the clavicular side (accuracy, 100%; 95% confidence interval, 73%-100%). Three injections (23%) placed all latex on the clavicular side of the SCJ in the presence of a complete intra-articular disk. Dissection revealed incomplete degenerated disks in the remaining 10 joints. Seven of these injections (54%) clearly placed more than 80% of the latex on the clavicular side, whereas the remaining 3 injections (23%) showed nearly equal latex distribution between the clavicular and sternal sides. No injection resulted in neurovascular injury or extracapsular flow.

CONCLUSIONS

Sonographically guided SCJ injections can be considered in the diagnosis and management of patients presenting with medial shoulder pain syndromes and, using the technique described herein, have a predilection to target the clavicular portion of the joint. In younger patients with possible complete intra-articular disks or in patients with sternal-side conditions, practitioners should consider confirming sternal-side flow after injection or attempt to specifically target the sternal side of the joint.

Ultrasonographic Evaluation of the Anterior Chest Wall in Spondyloarthritis: A Prospective and Controlled Study

Objective.

To determine the prevalence and type of ultrasonographic (US) lesions of the anterior chest wall (ACW) in cases of spondyloarthritis (SpA).

Methods.

This monocentric, prospective, and controlled study included patients consulting for SpA (Assessment of Spondyloarthritis International Society criteria) and control subjects. Clinical (pain and swelling) and US assessments (synovitis, joint effusion, erosion, ankylosis, margin narrowing, or Doppler signal) were performed on the sternoclavicular (SCJ) and the manubriosternal (MSJ) joints. The main characteristics of SpA were recorded [disease duration, biologic features, Ankylosing Spondylitis Disease Activity Score (ASDAS), Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), radiographic and extraarticular involvement].

Results.

The study included 131 patients with SpA and 49 control subjects (same age and sex ratio). Clinical and US involvement of ACW were found in, respectively, 39% and 35.5% of SpA and in 12% and 14.3% of controls (p < 0.01). US highlighted erosions (34 vs 0), margin narrowing (12 vs 0), power Doppler activity (18 vs 2; p < 0.05), and ankylosis of the MSJ (24 vs 3). US involvement was associated with disease duration (14.9 vs 11.1 years; p = 0.04), age (45 vs 41 years; p = 0.004), radiographic change of sacroiliac joint (p = 0.05), and presence of inflammatory bowel disease (IBD; p = 0.03). No associations were found with HLA-B27, psoriasis, enthesitis, uveitis, or clinical involvement of ACW. Clinical involvement is associated with a higher BASDAI (47 vs 32; p = 0.0009) and ASDAS (2.9 vs 2.2; p = 0.006).

Conclusion.

US involvement of ACW is frequent in SpA (36.5%), mainly with erosion of SCJ and ankylosis of MSJ. It is associated with disease duration, radiographic sacroiliitis, and IBD.

Multidetector computed tomography findings of the sternoclavicular joint in patients with rheumatoid arthritis

We evaluated the multidetector computed tomography (MDCT) findings of the sternoclavicular joint in patients with rheumatoid arthritis (RA) and compare them with general population. Chest MDCT scans of RA patients were reviewed. The control group was formed from age and sex-matched individuals. The most common CT findings were cortical irregularity, joint space narrowing, and osteophytes in study group. There were no statistically significant differences in the MDCT findings between the two groups except that osteophytes were observed more often in the control group. It is difficult to distinguish between the involvement of RA and age-related degenerative changes at the sternoclavicular joint.