Clinical bottom line
Refractory calcific tendinopathy in patients with rheumatic diseases remains a challenging clinical problem with limited high-quality evidence guiding therapy. Emerging interventions such as ultrasound-guided needling and lavage, and local sodium thiosulfate injections, show promise in reducing pain and improving function in calcific tendinopathy of the rotator cuff, including in refractory cases. However, data specific to rheumatic populations are sparse, and current evidence is largely derived from small cohorts or observational studies. Clinicians should consider these novel therapies as adjuncts to conventional management, with careful patient selection and monitoring.
What the evidence shows
Calcific tendinopathy, characterized by calcium hydroxyapatite deposits within tendons, commonly affects the rotator cuff and can cause significant pain and disability (Martino et al., 2022). While most cases respond to conservative management, a subset of patients, including those with underlying rheumatic diseases, experience refractory symptoms.
Ultrasound-guided needling and lavage (barbotage) has been studied as a minimally invasive technique to mechanically disrupt and aspirate calcium deposits. Garraud et al. (2016) demonstrated that ultrasound follow-up after needling and lavage correlated with clinical improvement, suggesting this approach can effectively reduce calcific burden and symptoms. This technique allows targeted treatment with real-time imaging, which is particularly useful in complex cases.
Sodium thiosulfate, a calcium-chelating agent, has been investigated for injection directly into calcific deposits. Darrieurtort-Laffite et al. (2018) reported on the efficacy and tolerance of sodium thiosulfate injections in patients with rotator cuff calcific tendinopathy, showing symptomatic relief and reduction in calcification size in a small cohort. This approach may offer a pharmacologic alternative or adjunct to mechanical disruption, especially in refractory cases.
Imaging studies from Radiopaedia.org provide detailed characterization of calcific tendinopathy affecting various rotator cuff tendons (O'Donnell et al., 2016; Hanouneh et al., 2025; Sereke et al., 2025), underscoring the heterogeneity of disease presentation and the importance of precise localization for targeted intervention.
Martino et al. (2022) emphasize the role of musculoskeletal ultrasound not only in diagnosis but also in guiding treatment and monitoring response, which is critical in managing refractory disease.
Caveats and uncertainty
The evidence base for novel therapies in refractory calcific tendinopathy among rheumatic disease patients is limited by small sample sizes, lack of randomized controlled trials, and heterogeneous patient populations. Most studies do not stratify outcomes by underlying rheumatic disease status, limiting generalizability.
Long-term efficacy and safety data for sodium thiosulfate injections are lacking, and optimal dosing regimens remain undefined. Similarly, while ultrasound-guided needling and lavage is widely used, procedural standardization and operator expertise vary, which may influence outcomes.
There is also uncertainty regarding the natural history of calcific deposits in rheumatic disease patients, who may have altered tendon biology and healing capacity. This could affect response to treatment and risk of recurrence.
Finally, the interplay between systemic inflammation and local tendon pathology in rheumatic diseases is incompletely understood, warranting cautious interpretation of treatment effects observed in non-rheumatic populations.
How this may change practice
Clinicians managing refractory calcific tendinopathy in rheumatic disease patients should consider incorporating ultrasound-guided interventions such as needling and lavage as part of a multimodal approach, especially when conservative measures fail. Sodium thiosulfate injections represent a promising pharmacologic option but require further validation before widespread adoption.
Musculoskeletal ultrasound should be routinely employed for diagnosis, treatment guidance, and follow-up to optimize outcomes. Multidisciplinary collaboration with radiologists and rheumatologists familiar with these techniques may enhance procedural success.
Given current evidence limitations, patient counseling should emphasize the experimental nature of these novel therapies, potential benefits, and risks. Participation in clinical trials or registries is encouraged to build the evidence base.
Ultimately, these emerging therapies may reduce pain and improve function in a difficult-to-treat subgroup, but personalized treatment plans remain essential.