Valiant Clinic/Houston Methodist Group, Dubai, United Arab Emirates.
Faculty of Health Sciences, School of Medicine, University of Pretoria, Cnr Bophelo and Dr Savage Road, Gezina, Pretoria, 0001, South Africa.
Surg Radiol Anat. 2021 Jul;43(7):1123-1130. doi: 10.1007/s00276-021-02696-8. Epub 2021 Feb 9.
The purpose of this study was to quantify the posterior horn meniscal slope and determine its contribution to the reduction in posterior tibial slope.
Patients aged between 16 and 60 years and had intact menisci with no evidence of previous injury or surgery were included. Patients with radiological evidence of osteoarthritis Grade II-IV, any acute or chronic meniscus injuries, fractures, and ligamentous injuries were excluded. The posterior bony slope (PTS) and the meniscus slope (MS) of the posterior horns were measured at 25, 50, and 75% from the medial and lateral borders of the tibial plateau.
325 MR images (mean age 37.1 ± 10.9 years) were included. There were 194 males and 131 females, with 162 left and 163 right knees. The PTS in the medial compartment ranged from (-) 2.8° to 3.7° and from (-) 1.3° to 1.9° in the lateral compartment (p = 0.0001). The MS in the medial compartment ranged from 27.4° to 28.2°, and from 27.8° to 28.7° in the lateral compartment (p > 0.05). The differences between the medial and lateral knee compartment were statistically significant. At the 25% interval the p level was 0.037, at 50% p = 0.00001, and at 75% p = 0.0001. There were no significant between gender differences.
The results of this study demonstrated a significant reduction in posterior tibial bone slope by the posterior horns of both the medial and lateral meniscus, from a mean of (-) 1° to 2° to a more horizontal anterior slope. The posterior bone slope was larger in the medial compartment by 1°, resulting in a smaller slope reduction in the lateral compartment.
本研究旨在量化半月板后角的斜率，并确定其对胫骨后斜率减小的贡献。
纳入年龄在 16 岁至 60 岁之间、半月板完整且无既往损伤或手术史的患者。排除影像学表现为 II-IV 级骨关节炎、任何急性或慢性半月板损伤、骨折和韧带损伤的患者。测量胫骨平台内侧和外侧边界 25%、50%和 75%处的后骨斜率（PTS）和后角半月板斜率（MS）。
共纳入 325 例 MRI 图像（平均年龄 37.1±10.9 岁），其中男性 194 例，女性 131 例，左侧 162 例，右侧 163 例。内侧间室 PTS 范围为（-）2.8°至 3.7°，外侧间室 PTS 范围为（-）1.3°至 1.9°（p=0.0001）。内侧间室 MS 范围为 27.4°至 28.2°，外侧间室 MS 范围为 27.8°至 28.7°（p＞0.05）。内侧和外侧膝关节间室之间的差异具有统计学意义。在 25%间隔时 p 值为 0.037，在 50%间隔时 p=0.00001，在 75%间隔时 p=0.0001。性别之间无显著差异。
本研究结果表明，内侧和外侧半月板后角使胫骨后骨斜率显著减小，从平均（-）1°至 2°变为更水平的前斜率。内侧间室的后骨斜率大 1°，导致外侧间室的斜率减小较小。
