Department of Orthopedic Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-Ro, Seoul 07345, Republic of Korea.
Medicina (Kaunas). 2023 Oct 18;59(10):1849. doi: 10.3390/medicina59101849.
The popliteal crease varies among individuals, and there has been no prior study on this aspect. We assumed that it may be associated with lower extremity alignment and osseous morphology. To demonstrate this, we conducted a radiographic analysis. The study was conducted on 121 knees of 63 patients, whose popliteal creases were well distinguished on clinical photographs. PCOA was defined as the angle between the longitudinal axis of the lower leg and the popliteal crease. Through the radiologic examinations performed, the HKA, MPTA, mLDFA, JLCA, MFCA/TEA, and PCA/TEA were measured. Pearson correlation analysis and multiple linear regression analysis were performed on the PCOA and the six radiologic measurements to analyze the relationship. Pearson correlation analysis found HKA had the highest coefficient at 0.568. In multiple linear regression, only HKA was associated, excluding all other measurements. Popliteal crease obliquity is significantly associated with coronal plane lower extremity alignment and exhibits a stronger correlation than with underlying knee osseous morphology. If future research is conducted based on this, popliteal crease could serve as a valuable clue for predicting lower extremity alignment and the risk of osteoarthritis development.
腘窝皱褶在个体之间存在差异，但此前尚未对此进行研究。我们假设它可能与下肢对线和骨骼形态有关。为了证明这一点，我们进行了影像学分析。该研究共纳入了 63 名患者的 121 个膝关节，这些患者的临床照片上可以清楚地分辨出腘窝皱褶。PCOA 定义为小腿的纵轴与腘窝皱褶之间的夹角。通过进行的影像学检查，测量了 HKA、MPTA、mLDFA、JLCA、MFCA/TEA 和 PCA/TEA。对 PCOA 和六项影像学测量值进行 Pearson 相关性分析和多元线性回归分析，以分析它们之间的关系。Pearson 相关性分析发现 HKA 的相关性最高，为 0.568。在多元线性回归中，只有 HKA 与其他所有测量值都相关。腘窝皱褶的倾斜度与冠状面下肢对线显著相关，其相关性强于与膝关节骨骼形态的相关性。如果未来基于此进行研究，腘窝皱褶可能成为预测下肢对线和骨关节炎发展风险的一个有价值的线索。
