PURPOSE Some researchers have suggested that bone bruises are evidence of rotational instability. The hypothesis was that the extent of lateral bone edema is correlated with the presence of an anterolateral ligament (ALL) injury. The main objective was to determine whether there was a correlation between the presence of an ALL injury the extent of bone bruises. METHODS A prospective diagnostic study enrolled all the patients who suffered an acute anterior cruciate ligament (ACL) who were operated on within 8 weeks. The extent of bone bruising according to the ICRS classification was measured on preoperative MRIs by two independent blinded raters twice with an interval of 4 weeks. Dynamic ultrasonography (US) to look for ALL injury and the pivot shift test were performed before the ACL surgery. The correlation between ALL injury and bone bruises, and the correlation between an ALL injury and a high-grade pivot shift test were determined. RESULTS Sixty-one patients were included; 52% of patients had an ALL injury on US. The extent of lateral bone bruise was not related to the presence of an ALL injury, nor related to the presence of a high-grade pivot shift. A grade 2 or 3 pivot shift was significantly correlated with an ALL injury (p < 0.0001). Inter- and intra-rater reliability for the bone bruise rating was excellent. CONCLUSION The extent of lateral bone bruise is not correlated with ALL injury or a high-grade pivot shift; thus, it is not correlated with rotational instability of the knee. LEVEL OF EVIDENCE II.

中文翻译：

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ACL缺陷膝关节患者的股骨和胫骨骨淤积量与ALL损伤或旋转不稳定性无关。

目的一些研究人员认为，骨挫伤是旋转不稳的证据。假设是，外侧骨水肿的程度与前外侧韧带（ALL）损伤的存在有关。主要目的是确定ALL损伤与骨挫伤程度之间是否存在相关性。方法一项前瞻性诊断研究纳入了所有在8周内接受手术的急性前交叉韧带（ACL）患者。由两名独立的盲人评分者在术前MRI上两次按间隔4周对根据ICRS分类的骨挫伤程度进行测量。在ACL手术之前进行了动态超声检查（US）以寻找所有损伤，并进行了轴心位移测试。ALL损伤与骨挫伤之间的关系，并确定了ALL损伤与高级枢轴位移测试之间的相关性。结果共纳入61例患者。52％的患者在US上发生了ALL损伤。外侧骨挫伤的程度与ALL损伤的存在无关，也与高级枢轴移位无关。2级或3级枢轴移位与ALL损伤显着相关（p <0.0001）。骨挫伤等级评定者之间和评定者内部的可靠性极好。结论外侧骨挫伤的程度与ALL损伤或高度枢轴移位无关。因此，它与膝盖的旋转不稳定性无关。证据级别II。52％的患者在US上发生了ALL损伤。外侧骨挫伤的程度与ALL损伤的存在无关，也与高级枢轴移位无关。2级或3级枢轴移位与ALL损伤显着相关（p <0.0001）。骨挫伤等级评定者之间和评定者内部的可靠性极好。结论外侧骨挫伤的程度与ALL损伤或高度枢轴移位无关。因此，它与膝盖的旋转不稳定性无关。证据级别II。52％的患者在US上发生了ALL损伤。外侧骨挫伤的程度与ALL损伤的存在无关，也与高级枢轴移位无关。2级或3级枢轴移位与ALL损伤显着相关（p <0.0001）。骨挫伤等级评定者之间和评定者内部的可靠性极好。结论外侧骨挫伤的程度与ALL损伤或高度枢轴移位无关。因此，它与膝盖的旋转不稳定性无关。证据级别II。骨挫伤等级评定者之间和评定者内部的可靠性极好。结论外侧骨挫伤的程度与ALL损伤或高度枢轴移位无关。因此，它与膝盖的旋转不稳定性无关。证据级别II。骨挫伤等级评定者之间和评定者内部的可靠性极好。结论外侧骨挫伤的程度与ALL损伤或高度枢轴移位无关。因此，它与膝盖的旋转不稳定性无关。证据级别II。