Assessment of simulation training efficacy in improving microsurgical skills: a retrospective analysis.

[BACKGROUND] Microsurgery demands an intensive period of skill acquisition due to its inherent complexity. The development and implementation of innovative training methods are essential for enhancing microsurgical outcomes. This study aimed to evaluate the impact of a simulation training program on the clinical results of fingertip replantation surgeries.

[MATERIALS AND METHODS] A total of 276 replanted digits from 232 patients were included in this study, with a follow-up period of 6 months. Surgeons were identified and divided into trained and control groups, with the trained group receiving the rat tail training program. Primary outcomes included survival rates, replantation duration for each fingertip, degrees of flexion, Semmes-Weinstein monofilament test results, static two-point discrimination scores, Michigan Hand Questionnaire (MHQ) scores, and the incidence rates of complications such as arterial insufficiency and pulp atrophy.

[RESULTS] Out of 1191 patients screened, 232 met the criteria for analysis. The average patient age was 41.3 years, predominantly male (87.1%). Trained microsurgeons performing Zone 1A replantation had higher success rates, shorter surgery durations, and fewer arterial complications compared to their untrained counterparts. For Zone 1B, they also showed improved operation times, decreased venous congestion and pulp atrophy, and better sensation outcomes. The results of trained group remained consistent across both single and multiple replantation, while the control group's outcomes varied in multiple replantation with less favorable results. The trained group reported better scores on the MHQ at 6-month follow-ups, particularly regarding work performance, pain levels, aesthetics, and satisfaction.

[CONCLUSIONS] The simulation training program using a rat tail model has proven effective in enhancing the skills necessary for improved fingertip replantation. Participants in the program performed surgeries more efficiently and achieved better clinical outcomes. The structure of the training has demonstrated benefits, which may lead to improvements in various microsurgical procedures, positively impacting trainee surgeons, patient care, and the broader medical community.