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Percutaneous electrolysis is a physical therapy technique, whose main objective is the treatment of the signs and symptoms associated with tendinopathies by applying a galvanic current through a blunt dry needle. Despite its clinical use being already stablished, the physiological mechanisms underlying this therapy are still unknown and thus, the optimal parameterization. The present study proposes to perform different stimulation protocols of percutaneous electrolysis on healthy subjects patellar tendon to answer those questions.
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Intervention will be performed in the middle of the patellar tendon, using ultrasonography to guide the needle insertion, without risk of affecting any adjacent structure. The theoretical basis of the technique is to produce specific controlled changes in the intervened tissue, and the pathological symptoms, through the accumulation of an electric charge. For this reason, the protocols will be the following:
The study design will be an crossover clinical trial, with randomized order of intervention with repeated measurements. Therefore, each subject will be have the four protocols at randomized order, with a gap of at least one week between them. The study will be full blinded.
The capacity to recruit the inhibitory system will be evaluated by means of conditioned pain modulation. Moreover, somatosensory thresholds will be evaluated in the knee, as well as knee extension strength. In addition, we will undertake continuous measures of the electrical bioimpedance of the patellar tendon, to study the changes produced by the intervention in the different intra and extracellular tissue components.
The conditioned modulation of pain assesment will take place one week before to the intervention, and the remaining measurements will be measured pre-intervention and post-intervention for each protocol.
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50 participants in 4 patient groups
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Data sourced from clinicaltrials.gov
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