DOS 2019

212 · DOS Abstracts Validation of the PHAT-score for evaluation of proximal hamstring avulsions Balint Vajta, Jeppe Lange, Bent Lund Center for Planlagt Kirurgi, Hospitalsenheden Midt; Ortopædkirurgisk Afdeling, Regionshospitalet Horsens Background: The surgical approach for treatment of proximal hamstring avul- sions is increasing in prevalence in Denmark as the advancement in operative techniques yield better results. There is therefore a need for a tool in Danish, which assesses the patient’s clinical condition pre- and postoperatively by utiliz- ing patient reported outcomes. Purpose / Aim of Study: The purpose of this study was to translate, test and validate the Perth Hamstring Assessment Tool (PHAT), an existing English self- reported questionnaire, for future utilization in a clinical setting. Materials and Methods: Translation of the PHAT questionnaire was done fol- lowing standardized translation protocol. Patients treated for hamstring injuries from 2010 to 2018 at RH Horsens were identified using the Danish electronic patient chart system.13 participants completed the questionnaire at baseline and at the 1-2 month follow-up via telephone. Data analysis was performed to test the internal consistency and reproducibility of the translated PHAT ques- tionnaire. Findings / Results: All 13 participants fully completed the questionnaire. Data analysis revealed a Cronbach’s alpha of 0.87 at baseline and 0.85 at follow up, and a cumulative intra-class correlation coefficient of 0.677 from baseline to follow-up. Conclusions: The study succeeded in the translation of the PHAT-score from English to Danish, supported by a high completion rate and high internal consis- tency. The limited number of included participants warranted for a more direct verbal contact to ensure the highest number of respondents. The approach may have had an effect on the statistical differences in reproducibility. A larger scale evaluation of the PHAT-score is required to further validate the Danish transla- tion before the questionnaire can safely be utilized in a clinical setting for evalu- ation of patients with proximal hamstring avulsions. Due to the limited number of patients available at individual centers, the authors plan to initiate a multi- center study to achieve this task. 170.