A new technology using Mixed Reality Surgical Navigation with UCRT frame to assist pelvic fracture reduction and fixation

Accurate reduction is a prerequisite for optimal screw placement. However, due to the complexity of the pelvic anatomical structure, the closed reduction process cannot be directly monitored. Consequently, the success of a closed reduction procedure relies on a certain degree of luck. Several reduction tools and techniques, including the Matta, Starr, and unlocking close reduction technique (UCRT) frames, have been developed to allow surgical navigation-assisted closed reduction to be performed. More recently, a new technology using mixed reality surgical navigation (MRSN) with UCRT frame has been developed that allows real-time monitoring of fracture fragment displacement to instruct pelvic fracture reduction. This new technology can also help determine the CS trajectory for fixation of the pelvic ring after good reduction.准确复位是实现螺钉精准置入的前提。然而，由于骨盆解剖结构复杂，闭合复位操作无法直接进行术中监测，因此闭合复位手术的成功在一定程度上存在偶然性。目前已开发出多种复位工具与技术，包括Matta支架、Starr支架以及解锁式闭合复位技术（Unlocking Close Reduction Technique, UCRT）支架，用于开展手术导航辅助下的闭合复位。近期，一项将混合现实手术导航（Mixed Reality Surgical Navigation, MRSN）与UCRT支架相结合的新技术被研发成功，该技术可实时监测骨折块移位情况，以此指导骨盆骨折复位。此外，该新技术还可在获得良好复位效果后，辅助确定骨盆环固定所需的螺钉置入轨迹。