Dataset for: Automated femoral landmark extraction for optimal prosthesis placement in total hip arthroplasty

The automated extraction of anatomical reference landmarks in the femoral volume may improve speed, precision and accuracy of surgical procedures, such as total hip arthroplasty. These landmarks are often hard to achieve, even via surgical incision. In addition, it provides a presurgical guidance for prosthesis sizing and placement. This study presents an automated workflow for femoral orientation and landmark extraction from a 3D surface mesh. The extraction of parameters such as the femoral neck axis, the femoral middle diaphysis axis, both trochanters and the center of the femoral head will allow the surgeon to establish the correct position of bony cuts to restore leg length and femoral offset. The definition of the medullary canal endosteal wall is used to position the prosthesis' stem. Furthermore, prosthesis alignment and sizing methods were implemented in order to provide the surgeon with presurgical information about performance of each of the patient specific femur-implant couplings. The workflow considers different commercially available hip stems and has the potential to help the preoperative planning of a total hip arthroplasty in an accurate, repeatable and reliable way. The positional and orientation errors are significantly reduced and therefore the risk of implant failure and subsequent revision surgery are also reduced.对股骨体域内的解剖参考标志点进行自动化提取，可提升全髋关节置换术（total hip arthroplasty）等外科手术的操作速度、精度与准确性。即便通过外科手术切口，这类标志点也往往难以准确定位获取。此外，该技术还可为假体型号选择与植入定位提供术前指导。本研究提出了一种基于三维表面网格（3D surface mesh）的股骨定向与标志点提取自动化工作流。提取股骨颈轴、股骨干中段轴、双侧股骨转子以及股骨头中心等参数，可帮助外科医生确定准确的骨截骨位置，以恢复肢体长度与股骨偏心距（femoral offset）。髓腔骨内膜壁的确定可用于假体柄（prosthesis stem）的定位植入。此外，本研究还实现了假体匹配对齐与型号选择方法，可为外科医生提供针对每一例患者专属股骨-假体匹配件（patient specific femur-implant couplings）的术前性能相关信息。该工作流适配多款市售髋关节假体柄，有望以精准、可重复且可靠的方式助力全髋关节置换术的术前规划。位置与定向误差可得到显著降低，进而减少假体失效及后续翻修手术的风险。