Ortoma AB, 412 85 Gothenburg, Sweden.
Department of Orthopedics, Clinical Sciences, Skåne University Hospital, Lund University, 221 84 Lund, Sweden.
Medicina (Kaunas). 2024 Sep 27;60(10):1589. doi: 10.3390/medicina60101589.
: Navigation systems are designed to enhance surgical precision, improving patient outcomes and reducing the risk of implant misplacement. In this study, we have evaluated a novel orthopedic surgical platform that utilizes CT imaging with AI-based algorithms to automate several critical aspects of total hip arthroplasty. It contains three modules-preoperative planning, navigation during surgery, and follow-up analysis. The primary objective of the current study was to evaluate the precision of the navigation tool in cup placement, i.e., whether the information displayed for navigation correctly reflected the actual position of the implant. : Surgery outcomes of 15 inter-rater measurements on human cadavers and 18 surgeries on patients who underwent total hip replacement using the navigation tool were analyzed. : In the inter-rater assessment, the mean errors were -0.31 ± 1.42° for anteversion, 1.06 ± 1.73° for inclination, and -0.94 ± 1.76 mm for cup position depth. In patients' surgeries, the mean errors were -0.07 ± 2.72° for anteversion, -0.2 ± 0.86° for inclination, and 0.28 ± 0.78 mm for cup depth. : The navigation tool offers intra-operative guidance on notable precision in cup placement, thereby effectively mitigating the risk of cup malpositioning outside the patient-specific safe zone.
导航系统旨在提高手术精度，改善患者预后并降低植入物错位的风险。在这项研究中，我们评估了一种新的骨科手术平台，该平台利用 CT 成像和基于人工智能的算法来自动执行全髋关节置换术的几个关键步骤。它包含三个模块：术前规划、手术中的导航和后续分析。本研究的主要目的是评估导航工具在杯放置中的精度，即导航中显示的信息是否正确反映了植入物的实际位置。
我们分析了使用导航工具进行全髋关节置换术的 15 次人类尸体和 18 例患者的手术中，导航工具在杯放置中的准确性。在组内评估中，前倾角的平均误差为-0.31±1.42°，倾斜角的平均误差为 1.06±1.73°，杯位置深度的平均误差为-0.94±1.76mm。在患者的手术中，前倾角的平均误差为-0.07±2.72°，倾斜角的平均误差为-0.2±0.86°，杯深度的平均误差为 0.28±0.78mm。
导航工具在杯放置方面提供了显著精度的术中指导，从而有效地降低了杯错位超出患者特定安全区的风险。
