Identifying appropriate attachment sites is important in the planning of medial patellofemoral ligament (MPFL) reconstruction. Two criteria are advanced to describe normal MPFL function, namely isometric criterion and desired pattern criterion. Subsequently, computational methods have applied these criteria to determine optimal attachment sites. So far, there is no study that compares the outcomes of these two criteria. For five subjects’ 3D models of the patella and femur, three patellar sites and many femoral sites were identified as pairs of candidate attachment sites. For each patellar site, the criteria were applied to identify the matching femoral sites that satisfy them. The matching femoral site with the smallest length change was identified as the optimal femoral site. The desired pattern criterion finds fewer matching sites compared to the isometric criterion. In contrast, the isometric criterion can always find matching sites. The optimal femoral sites obtained vary significantly across different subjects. For most subjects, the optimal sites obtained using the isometric criterion are closer to known anatomical sites than those obtained using the desired pattern criterion. This study reaffirms that MPFL reconstruction is subject specific. The isometric criterion may be more reliable than the desired pattern criterion for determining optimal attachment sites.

确定合适的附着部位在内侧髌股韧带 (MPFL) 重建计划中很重要。提出了两个标准来描述正常的 MPFL 功能，即等距标准和期望模式标准。随后，计算方法已应用这些标准来确定最佳附着位点。到目前为止，还没有研究比较这两个标准的结果。对于五个受试者的髌骨和股骨的 3D 模型，三个髌骨部位和许多股骨部位被确定为候选附着部位对。对于每个髌骨部位，应用标准来确定满足它们的匹配股骨部位。长度变化最小的匹配股骨部位被确定为最佳股骨部位。与等距标准相比，所需的模式标准找到的匹配位点更少。相比之下，等距标准总是可以找到匹配的站点。获得的最佳股骨部位在不同受试者之间差异很大。对于大多数受试者，使用等距标准获得的最佳部位比使用所需模式标准获得的部位更接近已知的解剖部位。该研究重申 MPFL 重建是特定于学科的。等距标准可能比用于确定最佳附着位点的所需图案标准更可靠。使用等距标准获得的最佳部位比使用所需模式标准获得的最佳部位更接近已知的解剖部位。该研究重申 MPFL 重建是特定于学科的。等距标准可能比用于确定最佳附着位点的所需图案标准更可靠。使用等距标准获得的最佳部位比使用所需模式标准获得的最佳部位更接近已知的解剖部位。该研究重申 MPFL 重建是特定于学科的。等距标准可能比用于确定最佳附着位点的所需图案标准更可靠。