Division of Sports Medicine, Department of Orthopedic Surgery, NYU Langone Health, 334 East 26th Street, New York, NY, 10003, USA.
Eur J Orthop Surg Traumatol. 2024 Dec;34(8):4037-4042. doi: 10.1007/s00590-024-04104-4. Epub 2024 Oct 2.
Increased Posterior Tibial Slope (PTS) angle has been reported to be a risk factor for primary anterior cruciate ligament (ACL) tears. However, it is unknown whether increased PTS has an associated increased risk for non-contact versus contact ACL injury.
The purpose of this study is to determine whether patients with non-contact ACL injury have a higher PTS angle than those with contact ACL injury.
A total of 1700 patients who underwent primary ACL reconstruction between January 2011 and June 2023 at a single academic institution were initially included. Electronic medical records were reviewed for demographic information as well as evidence that the patient sustained a contact or non-contact ACL injury. Patients in the contact cohort were propensity score matched to patients in the non-contact cohort by age, sex and BMI. Additionally, patients in the contact cohort were then propensity score matched to a control group of patients with intact ACLs also by age, sex and BMI.
One hundred and two patients with contact injury were initially identified and 1598 patients with non-contact injuries were identified. Of the 102, 67 had knee X-rays that were suitable for measurement. These 67 contact injury patients were propensity score matched to 67 noncontact patient and 67 patients with intact ACLs based on age, sex and BMI. There were no significant differences between contact and non-contact cohorts in age (28.7±6.3 vs. 27.1±6.5, p = 0.147), sex (Female: 36.0% vs. 34.3%, p = 0.858), or BMI (26.7±5.6 vs 26.1±3.4, p = 0.475). There was no significant difference in PTS angle between contact versus non-contact ACL injury patients (11.6±3.0 vs.11.6±2.8, p = 0.894). There was a significant difference in PTS between the contact ACL injury and the intact cohort (11.6±3.0 vs. 10.0±3.9, p = 0.010) and the non-contact ACL injury and the intact cohort (11.6±2.8 vs. 10.0±3.9, p = 0.010).
There was no significant difference in the degree of PTS between patients who sustained contact versus non-contact ACL injuries. Additionally, there was a significantly increased PTS in both the contact and non-contact ACL injury cohorts compared to patients with intact ACLs.
研究发现，胫骨后倾角（PTS）增加是前交叉韧带（ACL）初次撕裂的一个危险因素。然而，增加的 PTS 是否与非接触性与接触性 ACL 损伤有关，目前尚不清楚。
本研究旨在确定非接触性 ACL 损伤患者的 PTS 角度是否高于接触性 ACL 损伤患者。
共纳入 2011 年 1 月至 2023 年 6 月期间在一家学术机构行初次 ACL 重建的 1700 例患者。回顾电子病历以获取患者的人口统计学信息及是否发生接触性或非接触性 ACL 损伤的证据。将接触组患者按年龄、性别和 BMI 进行倾向评分匹配，与非接触组患者进行匹配。此外，将接触组患者按年龄、性别和 BMI 与 ACL 完整的对照组患者进行倾向评分匹配。
最初确定了 102 例接触性损伤患者和 1598 例非接触性损伤患者。其中 102 例患者的膝关节 X 线片适合测量。这 67 例接触性损伤患者根据年龄、性别和 BMI 与 67 例非接触性患者和 67 例 ACL 完整的患者进行倾向评分匹配。接触组和非接触组在年龄（28.7±6.3 岁 vs. 27.1±6.5 岁，p = 0.147）、性别（女性：36.0% vs. 34.3%，p = 0.858）或 BMI（26.7±5.6 岁 vs. 26.1±3.4 岁，p = 0.475）方面无显著差异。接触性 ACL 损伤患者与非接触性 ACL 损伤患者的 PTS 角度无显著差异（11.6±3.0 度 vs. 11.6±2.8 度，p = 0.894）。接触性 ACL 损伤组与 ACL 完整组（11.6±3.0 度 vs. 10.0±3.9 度，p = 0.010）和非接触性 ACL 损伤组与 ACL 完整组（11.6±2.8 度 vs. 10.0±3.9 度，p = 0.010）的 PTS 差异有统计学意义。
接触性与非接触性 ACL 损伤患者的 PTS 角度无显著差异。此外，与 ACL 完整的患者相比，接触性和非接触性 ACL 损伤患者的 PTS 均显著增加。
