Coronary artery bypass graft (CABG) remains the standard of care for patients with multi-vessel coronary artery disease [1]. Although traditional CABG is performed via median sternotomy, this surgical access route is associated with major disadvantages such as a prolonged recovery time, a poor cosmetic result, and a significant risk of chronic post-sternotomy pain, as well as several potential complications, including sternal instability, delayed bone healing, and wound infections [2]. Diabetes, obesity, and large breast size in females are important risk factors for sternal wound complications and therefore relative contraindications for bilateral internal mammary artery (BIMA) grafting via classic sternotomy. To overcome these restrictions, less invasive access routes to the heart, including mini-thoracotomy or partial opening of the sternum have been investigated since the mid-1990s. During the past decade, these minimally invasive procedures have increased in popularity, are more commonly applied, and have even become the routine method in several centers around the world [3]. They are proven to be safe and feasible [4] with excellent surgical outcomes, including a reduced patient recovery time [5], lower transfusion rates, less wound infections, shorter hospitalization time, and low hospital mortality rate [6].