The Flower Petal Training System in Microsurgery: Validation of a Training Model Using a Randomized Controlled Trial

Area of Science:

• Surgical Education
• Microsurgery Training Models
• Biomedical Engineering

Background:

• Microsurgery training lacks scientifically validated models.
• Low-fidelity models are often used but require rigorous assessment.
• Evaluating novel, cost-effective training methods is crucial for skill development.

Purpose of the Study:

• To scientifically validate a low-fidelity flower petal microsurgery training model.
• To compare the efficacy of flower petal training against a moderate-fidelity chicken leg model.
• To assess the impact on surgical skill acquisition and trainee performance.

Main Methods:

• 16 participants were randomized into flower petal or chicken leg training groups.
• Performance was evaluated using the Stanford Microsurgical Assessment (SMaRT) Scale on rat femoral artery anastomosis.
• Statistical analysis included Mann-Whitney U test and Pearson correlation.

Main Results:

• Flower petal training led to significantly better SMaRT scores, fine tissue feeling, and knot tying.
• No significant difference in anastomosis times for rat femoral arteries between groups.
• Flower petal suture scores strongly correlated with final SMaRT performance.

Conclusions:

• The low-fidelity flower petal model demonstrates superiority for improving fine tissue feel and knot tying in novice microsurgeons.
• This model offers a viable, cost-effective alternative that reduces the need for animal models in training.
• Further research is needed to confirm efficacy in experienced surgeons and predictive value for clinical outcomes.