Department of Orthopaedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
Chongqing Medical University, Chongqing, 400016, China.
BMC Musculoskelet Disord. 2022 Jul 20;23(1):689. doi: 10.1186/s12891-022-05653-7.
To research whether medial PTS, lateral PTS and MTD were different between the PCL injury group and the PCL intact group.
Retrospective case-control study, level of evidence III.
Fifty patients with PCL rupture from 2015 to 2020 in our hospital, and 50 patients matched by age and sex with intact PCL were enrolled in our study. The intraclass correlation coefficient (ICC) was used to assess the reliability of each parameter. The independent t-test was conducted to identify the differences in tibial morphometric characteristics between the PCL-injured and PCL-intact individuals, including the posterior tibial slope (PTS), meniscal slope (MS), medial tibial depth (MTD). A binary logistic regression model was established to evaluate the roles of those anatomic parameters of interest play in PCL injuries.
The interobserver reliability of each parameter showed excellent agreement. Significant differences in the medial (P = .023) and lateral (P = .009) PTS were found between the PCL-injured group (3.68 ± 2.70 and 4.55 ± 3.19, respectively) and the controls (5.00 ± 2.73 and 6.39 ± 3.29, respectively). And the MTD was 1.98 ± 0.64 mm in the PCL-injured group and 2.37 ± 0.55 mm in the control group (P = 0.007). Binary logistic regression analysis showed that smaller lateral PTS and MTD were directly associated with PCL injury, with an OR of 1.17 and OR of 3.14, respectively. The medial PTS was independent to PCL injures.
Decreased lateral PTS and MTD were underlying anatomic risk factors for PCL injury.
研究内侧胫骨平台后倾角（medial PTS）、外侧胫骨平台后倾角（lateral PTS）和中胫骨平台深度（MTD）在 PCL 损伤组和 PCL 完整组之间是否存在差异。
回顾性病例对照研究，证据等级 III。
选取 2015 年至 2020 年我院收治的 50 例 PCL 撕裂患者，并纳入 50 例年龄和性别与 PCL 完整患者相匹配的患者。采用组内相关系数（ICC）评估各参数的可靠性。采用独立 t 检验比较 PCL 损伤组和 PCL 完整组胫骨形态特征的差异，包括胫骨后倾角（PTS）、半月板后倾角（MS）、中胫骨深度（MTD）。建立二项逻辑回归模型评估这些解剖参数在 PCL 损伤中的作用。
各参数的观察者间可靠性均显示出极好的一致性。在 PCL 损伤组（分别为 3.68±2.70 和 4.55±3.19）和对照组（分别为 5.00±2.73 和 6.39±3.29）之间，内侧（P=0.023）和外侧（P=0.009） PTS 存在显著差异。在 PCL 损伤组中，MTD 为 1.98±0.64mm，在对照组中为 2.37±0.55mm（P=0.007）。二项逻辑回归分析显示，较小的外侧 PTS 和 MTD 与 PCL 损伤直接相关，OR 分别为 1.17 和 3.14。内侧 PTS 与 PCL 损伤无关。
外侧 PTS 和 MTD 减小是 PCL 损伤的潜在解剖危险因素。
