The space available for the anterior cruciate ligament in the intercondylar notch is less in patients with ACL injury.,Knee Surgery, Sports Traumatology, Arthroscopy

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The space available for the anterior cruciate ligament in the intercondylar notch is less in patients with ACL injury.
Knee Surgery, Sports Traumatology, Arthroscopy ( IF 3.3 ) Pub Date : 2020-03-10 , DOI: 10.1007/s00167-020-05921-w
Takeshi Oshima _{1,

2} , Sven Putnis _{1,

3} , Samuel Grasso _{1,

4} , David Anthony Parker _{1,

4}

Affiliation

Abstract

Purpose

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.

Methods

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.

Results

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 cm³), ACL (2.4 ± 0.7 vs 2.4 ± 0.6 cm³) and PCL (3.9 ± 1.0 vs 3.4 ± 0.8 cm³), 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 cm³, p = 0.012).

Conclusions

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.

Level of evidence

IV.

中文翻译：

ACL损伤患者的con间凹口中前十字韧带的可用空间较小。

摘要

目的

这项研究的目的是确定在ACL受伤的患者和健康受试者中，股骨con间切迹量与前十字韧带（ACL）和后十字韧带（PCL）的体积之间的关系是否存在差异。

方法

使用3特斯拉高分辨率磁共振成像扫描19例健康受试者的完整膝盖和18例同侧ACL重建患者的双膝。three间切口，ACL，PCL和绳肌移植物使用三维（3D）处理软件进行分割。比较两组之间的自然con间切口，ACL和PCL体积。比较ACL受伤患者的天然ACL和移植物的体积。

结果

以下各卷显示ACL损伤组与对照组之间无显着差异；con间切口（9.9±2.3 vs 9.6±1.7 cm ³），ACL（2.4±0.7 vs 2.4±0.6 cm ³）和PCL（3.9±1.0 vs 3.4±0.8 cm ³），以及ACL与con间切口的比率（24.6±5.0与25.4±2.9％）。PCL与con间切口的比率存在显着差异（39.1±4.3对35.9±4.9％，p = 0.023）。移植物明显大于天然ACL体积（3.0±0.7 vs 2.4±0.7 cm ³，p = 0.012）。