Eficacia de las infiltraciones con colágeno en el dolor pélvico causado por cicatrices de episiotomía y cesáreas. Ensayo clínico piloto aleatorizado

Abstract

Background and aimsPelvic pain is a frequently consulted symptom in pelvic floor rehabilitation units. The aim of this study was to evaluate the efficacy of collagen infiltrations in pain and the appearance of scars from perineal tears, episiotomies and caesarean sections. Material and methodsPilot randomized, controlled and single-blind clinical trial. Control group (CG) patients received conventional rehabilitation treatment. Additionally, those in the intervention group (IG) received 3-5 collagen infiltrations. The patients were evaluated at baseline and 6 weeks post-intervention. The main outcome was pain and it was evaluated with the visual analog scale and McGill Pain Questionnaire. As secondary outcomes, the appearance of the scar was evaluated by Vancouver Scar Scale and the Patient Scar Assessment Scale. A sample of 15 women was analyzed, 8 in the CG and 7 in the IG. ResultsThe mean age was 33.1 years (SD 4.1). The intragroup analysis showed a significant decrease of the visual analog scale punctuation and total McGill Pain Questionnaire score and the PRI-Emotional dimension of the McGill Pain Questionnaire. In the IG, a significant decrease was also observed in the PRI-Sensorial and PRI-Evaluative dimensions in comparison with baseline situation. In both groups, a significant improvement in the appearance of the scar was observed. In the intergroup analysis, a greater decrease in pain was observed in PRI-Sensorial subscale of the McGill Pain Questionnairein the IG (−15.1 vs. −6; P=.040). ConclusionsCollagen infiltrations may improve pain and the appearance of painful scars.