Sydney Orthopaedic Research Institute, Level 1, 445 Victoria Avenue, Chatswood, Sydney, NSW, Australia.
Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Knee Surg Sports Traumatol Arthrosc. 2020 Jul;28(7):2105-2115. doi: 10.1007/s00167-020-05921-w. Epub 2020 Mar 10.
The aim of this study was to determine if a difference exists in the relationship between the femoral intercondylar notch volume, and the volumes of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) in ACL injured patients and healthy subjects.
Intact knees of 19 healthy subjects and bilateral knees of 18 ipsilateral ACL reconstructed patients were scanned using 3-tesla high-resolution magnetic resonance imaging. The intercondylar notch, ACL, PCL and hamstring graft were segmented using three-dimensional (3D) processing software. The native intercondylar notch, ACL, and PCL volumes were compared between both groups. The volumes of native ACL and graft were compared in ACL injured patients.
The following volumes showed no significant differences between the ACL injured group and control group; intercondylar notch (9.9 ± 2.3 vs 9.6 ± 1.7 cm), ACL (2.4 ± 0.7 vs 2.4 ± 0.6 cm) and PCL (3.9 ± 1.0 vs 3.4 ± 0.8 cm), and the ratio of the ACL to the intercondylar notch (24.6 ± 5.0 vs 25.4 ± 2.9%). There was a significant difference in the ratio of PCL to the intercondylar notch (39.1 ± 4.3 vs 35.9 ± 4.9%, p = 0.023). The graft was significantly larger than native ACL volume (3.0 ± 0.7 vs 2.4 ± 0.7 cm, p = 0.012).
The ratio of the PCL volume in the femoral intercondylar notch was higher in the ACL injured group compared to the healthy control group, despite the ratio of ACL volume in the femoral intercondylar notch being similar in both groups. A greater awareness of the potentially limited space for the graft alongside the PCL within the femoral intercondylar notch may allow surgeons a more informed choice of graft type and size.
IV.
本研究旨在确定在 ACL 损伤患者和健康受试者中，股骨髁间窝容积与前交叉韧带（ACL）和后交叉韧带（PCL）容积之间的关系是否存在差异。
使用 3 特斯拉高分辨率磁共振成像对 19 名健康受试者的完整膝关节和 18 名同侧 ACL 重建患者的双侧膝关节进行扫描。使用三维（3D）处理软件对髁间窝、ACL、PCL 和腘绳肌移植物进行分割。比较两组间的髁间窝固有容积、ACL 和 PCL。比较 ACL 损伤患者的 ACL 固有容积和移植物容积。
ACL 损伤组与对照组之间，髁间窝（9.9±2.3 与 9.6±1.7 cm）、ACL（2.4±0.7 与 2.4±0.6 cm）和 PCL（3.9±1.0 与 3.4±0.8 cm）体积及 ACL 与髁间窝的比值（24.6±5.0 与 25.4±2.9%）均无显著差异。而 PCL 与髁间窝的比值（39.1±4.3 与 35.9±4.9%，p=0.023）有显著差异。移植物的体积明显大于 ACL 固有体积（3.0±0.7 与 2.4±0.7 cm，p=0.012）。
尽管 ACL 损伤组和对照组的髁间窝内 ACL 体积的比值相似，但 ACL 损伤组的髁间窝内 PCL 体积的比值高于对照组。对髁间窝内移植物与 PCL 之间潜在空间有限的认识，可能使外科医生在选择移植物类型和大小时有更多的依据。
IV 级。
