ArticleHand (New York, N.Y.)2023
The Radial Synergy Test: An Aid to Diagnose de Quervain's Tenosynovitis.
Article in Hand (New York, N.Y.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 4 citations in OpenAlex.
- Reliability of Provocative Maneuvers for Hand Pathologies: Concordance Between Nonspecialist and Specialist Assessments in a General Clinic Setting.Journal of hand surgery global online · 2025Article
- Development of de Quervain Tenosynovitis After Distal Radius Fracture.Hand (New York, N.Y.) · 2024Article
- A scoping review to map evidence regarding key domains and questions in the management of non-traumatic wrist disorders.Hand therapy · 2024Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDiagnosis of de Quervain's tenosynovitis is made clinically. Finkelstein's and Eichoff's tests are commonly utilized examination maneuvers. Their specificity has been questioned due to a propensity to provoke pain in asymptomatic patients. Using the principle of synergism, the novel radial synergy test takes advantage of isometric contraction of the first dorsal compartment with resisted abduction of the small finger.
methodsElectromyography was performed on 3 authors and the first dorsal compartment sampled during the maneuver. Sensitivity evaluation was performed via retrospective chart review for patients diagnosed with de Quervain's from 2013 to 2018. Inclusion criteria were documented radial synergy test, Eichoff's test, and ≥90% pain relief after lidocaine/corticosteroid injection. We enrolled 222 patients with 254 affected extremities. Specificity evaluation was performed via a prospective cohort of volunteers undergoing radial synergy and Eichoff's tests. Inclusion criterion was lack of preexisting wrist pain. Score > 0 on Visual Analog Scale was considered positive. We enrolled 48 volunteers with 93 tested extremities.
resultsElectromyography revealed positive recruitment of the first dorsal compartment. Sensitivity of the radial synergy test was inferior to Eichoff's test (97% vs 91%, relative risk [RR] = 0.93 [95% confidence interval [CI] = 0.89-0.97],
conclusionsWe describe and evaluate the radial synergy test, a novel examination maneuver to aid the diagnosis of de Quervain's. This serves as an adjunct for future diagnostic evaluations with its high specificity. LEVEL OF EVIDENCE: Level II, diagnostic study.
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