[en] Background. De Quervain´s tenosynovitis (TDQ) is a pathology with an inflammatory and degenerative component which affects the tendons that run through the first dorsal compartment of the wrist, causing pain and functional limitation, which is not adequately resolved with the conventional treatments. On the other hand, percutaneous electrolysis (PE) was successfully applied, in combination with eccentric exercises (EE), in other tendinopathies. Objective. The aim of this research project is to find out the efficacy of PE in combination with EE versus sham PE and EE in people with TDQ who present degeneration in the tendons of the APL and/or EPB muscles, as well as persistence of pain after treatment with corticosteroid infiltration. Material and methods: A single-blind randomized clinical trial is proposed. A sample of 42 patients diagnosed with TDQ will be divided into 2 groups: a) PE + EE group and b) sham PE + EE group, each intervention consisting of 4 sessions over 8 weeks. Participants will be assessed at baseline, at the end of the intervention, and at 3 and 12 months. The change in pain on contraction with respect to baseline, measured with the Numerical Pain Rating Scale (NPRS), will be the main variable. In addition, pain on palpation, as well as disability, will be analyzed with the pressure pain threshold and the Patient Specific Functional Scale (PSFS), respectively. Finally, tolerance to treatment and individual satisfaction will be measured, and the occurrence of adverse effects will be recorded. The expected results will help to determine the effects of the combination of PE with a EE program, and whether these are maintained in the long term. It will also make it possible to investigate the mechanism of action of PE, whether it is primarily due to electrochemical stimulation or, on the contrary, to mechanical mechanism.

[gl] Introdución. A tenosinovite de De Quervain (TDQ) é unha patoloxía con compoñente inflamatorio e dexenerativo que afecta ós tendóns que discorren polo primeiro compartimento dorsal do pulso, provocando dor e limitación funcional que non se resolven adecuadamente cos tratamentos habituais. Por outra banda, a electrolise percutánea (EP) foi aplicada con éxito, en combinación con exercicios excéntricos (EE), noutras tendinopatías. Obxectivo. O obxectivo deste proxecto de investigación é coñecer a eficacia da EP en combinación con EE fronte á EP simulada e EE en persoas con TDQ que presentan dexeneración nos tendóns dos músculos APL e/ou EPB, así coma persistencia da dor despois do tratamento con infiltración de corticoesteroides. Material e método. Proponse un ensaio clínico aleatorizado a simple cego. Unha mostra de 42 pacientes diagnosticados de TDQ dividirase en 2 grupos: a) grupo de EP + EE e b) grupo EP simulada + EE, consistindo cada intervención en 4 sesións distribuídas en 8 semanas. Os participantes serán avaliados antes de comezar a intervención, ó finalizar e ós 3 e 12 meses. O cambio na dor á contracción con respecto ó inicio, medida ca Escala de Valoración Numérica da Dor (NPRS), será a variable principal. Ademais analizarase a dor á palpación, así como a discapacidade, co limiar de dor á presión e ca Escala Funcional Específica do Paciente (PSFS), respectivamente. Por último, serán medidas a tolerancia ó tratamento e a satisfacción do individuo, e recollerase a aparición de efectos adversos. Os resultados esperados axudarán a determinar os efectos da combinación da EP cun programa de EE, e se estes se manteñen a longo prazo. Tamén posibilitará afondar no mecanismo de acción da EP, para coñecer se fundamentalmente se debe ó estímulo electroquímico ou, pola contra, ó estímulo mecánico.