Department of Orthopedic Surgery and Sports Medicine, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands.
Department of Radiology, Albert Schweitzer Hospital, Dordrecht, The Netherlands.
Knee Surg Sports Traumatol Arthrosc. 2023 Feb;31(2):449-454. doi: 10.1007/s00167-022-07049-5. Epub 2022 Jul 15.
Little is known about risk factors for sustaining a posterior cruciate ligament (PCL) rupture. Identifying risk factors is the first step in preventing a PCL rupture from occurring. The morphology of the knee in patients who ruptured their PCL may differ from that of control patients. The hypothesis was that the intercondylar notch dimensions, 3-D volumes of the intercondylar notch and, the 3-D volumes of both the ACL and the PCL were correlated to the presence of a PCL rupture.
The magnetic resonance imaging (MRI) scans of 30 patients with a proven PCL rupture were compared to 30 matched control patients with proven intact ACL and PCL. Control patients were selected from patients with knee trauma during sports but without cruciate ligament injury. Patients have been matched for age, height, weight, BMI, and sex. The volumes of the intercondylar notch and both the ACL and PCL were measured on 3D reconstructions. Second, the bicondylar width, the notch width, and the notch width index were measured of all subjects. The relationship between our measurements and the presence of a PCL rupture was analysed.
The results show a significant difference in the volumes of the intercondylar notch and the ACL between patients with a ruptured PCL and control patients. Patients with a PCL rupture have smaller intercondylar notch volumes and smaller ACL volumes. There were no significant differences in the bicondylar width, notch width, and notch width index. In the control patients, a significant correlation between the volume of the PCL and the volume of the ACL was found (0.673, p < 0.001).
Patients with a PCL rupture have smaller intercondylar volumes and smaller ACL volumes when compared to control patients. Second, patients with smaller ACL volumes have smaller PCL volumes. This study shows, for the first time, that there are significant size and volume differences in the shape of the knee between patients with a PCL rupture and control patients.
IV.
对于导致后交叉韧带（PCL）撕裂的风险因素知之甚少。确定风险因素是预防 PCL 撕裂发生的第一步。与未发生 PCL 撕裂的患者相比，发生 PCL 撕裂的患者的膝关节形态可能有所不同。该假设是，髁间切迹的尺寸、髁间切迹的 3D 体积以及 ACL 和 PCL 的 3D 体积与 PCL 撕裂的存在相关。
将 30 例经证实的 PCL 撕裂患者的磁共振成像（MRI）扫描结果与 30 例经证实 ACL 和 PCL 完整的匹配对照患者进行比较。对照患者是从运动中膝关节创伤但无交叉韧带损伤的患者中选择的。患者按年龄、身高、体重、BMI 和性别进行匹配。在 3D 重建上测量髁间切迹和 ACL 及 PCL 的体积。其次，测量所有受试者的双髁宽度、切迹宽度和切迹宽度指数。分析我们的测量结果与 PCL 撕裂之间的关系。
结果显示，与对照患者相比，患有 PCL 撕裂的患者的髁间切迹和 ACL 体积存在显著差异。患有 PCL 撕裂的患者的髁间切迹体积和 ACL 体积较小。双髁宽度、切迹宽度和切迹宽度指数无显著差异。在对照患者中，发现 PCL 体积与 ACL 体积之间存在显著相关性（0.673，p<0.001）。
与对照患者相比，患有 PCL 撕裂的患者的髁间体积较小，ACL 体积较小。其次，ACL 体积较小的患者 PCL 体积较小。本研究首次表明，与对照患者相比，患有 PCL 撕裂的患者的膝关节形态存在明显的大小和体积差异。
IV。
