Orthopaedic drill guide prototype validation

Cemented total hip arthroplasty (THA) demonstrates superior survival rates compared to uncemented procedures. Nevertheless, most younger patients opt for uncemented THA, as removing well-fixed bone cement in the femur during revisions is complex, particularly the distal cement plug. This removal procedure often increases the risk of femoral fracture or perforation, haemorrhage and weakening bone due to poor drill control and positioning. Aim of this study was to design a novel drill guide to improve drill positioning. A novel orthopaedic drill guide was developed, featuring a compliant centralizer activated by a drill guide actuator. Bone models were prepared to assess centralizing performance. Three conditions were tested: drilling without guidance, guided drilling with centralizer activation held, and guided drilling with centralizer activation released. Deviations from the bone centre were measured at the entry and exit point of the drill. In the centralizing performance test, the drill guide significantly reduced drill hole deviations in both entry and exit points compared to the control (p

水泥固定全髋关节置换术（THA）相较于非水泥固定手术展现出更高的生存率。然而，大多数年轻患者倾向于选择非水泥固定THA，因为在翻修过程中移除股骨中固定良好的骨水泥是一项复杂的任务，尤其是远端水泥栓的移除。此移除过程常常因钻头控制不佳和定位不准确而增加了股骨骨折或穿凿、出血以及骨骼弱化的风险。本研究的目的是设计一种新型的钻头导向器以改善钻头定位。一种新型的骨科钻头导向器得以开发，其特点在于由钻头导向器驱动器激活的可变形中心器。制备了骨模型以评估其中心化性能。测试了三种条件：无导向钻头钻孔、有中心器激活的导向钻头钻孔以及有中心器激活释放的导向钻头钻孔。测量了钻头进入和退出点的骨中心偏差。在中心化性能测试中，钻头导向器显著减少了钻头在进入和退出点的孔位偏差，与控制组相比（p