Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA.
Department of Biomedical Engineering, Duke University, Durham, North Carolina, USA.
Am J Sports Med. 2021 Feb;49(2):404-409. doi: 10.1177/0363546520981569. Epub 2021 Jan 7.
Bone contusions are commonly observed on magnetic resonance imaging (MRI) in individuals who have sustained a noncontact anterior cruciate ligament (ACL) injury. Time from injury to image acquisition affects the ability to visualize these bone contusions, as contusions resolve with time.
To quantify the number of bone contusions and their locations (lateral tibial plateau [LTP], lateral femoral condyle [LFC], medial tibial plateau [MTP], and medial femoral condyle [MFC]) observed on MRI scans of noncontact ACL-injured knees acquired within 6 weeks of injury.
Cross-sectional study; Level of evidence, 3.
We retrospectively reviewed clinic notes, operative notes, and imaging of 136 patients undergoing ACL reconstruction. The following exclusion criteria were applied: MRI scans acquired beyond 6 weeks after injury, contact ACL injury, and previous knee trauma. Fat-suppressed fast spin-echo T2-weighted MRI scans were reviewed by a blinded musculoskeletal radiologist. The number of contusions and their locations (LTP, LFC, MTP, and MFC) were recorded.
Contusions were observed in 135 of 136 patients. Eight patients (6%) had 1 contusion, 39 (29%) had 2, 41 (30%) had 3, and 47 (35%) had 4. The most common contusion patterns within each of these groups were 6 (75%) with LTP for 1 contusion, 29 (74%) with LTP/LFC for 2 contusions, 33 (80%) with LTP/LFC/MTP for 3 contusions, and 47 (100%) with LTP/LFC/MTP/MFC for 4 contusions. No sex differences were detected in contusion frequency in the 4 locations ( > .05). Among the participants, 50 (37%) had medial meniscal tears and 52 (38%) had lateral meniscal tears.
The most common contusion patterns observed were 4 locations (LTP/LFC/MTP/MFC) and 3 locations (LTP/LFC/MTP).
在遭受非接触性前交叉韧带（ACL）损伤的个体的磁共振成像（MRI）中，常可见到骨挫伤。从受伤到获取图像的时间会影响观察这些骨挫伤的能力，因为挫伤会随时间而消退。
定量测量非接触性 ACL 损伤后 6 周内获得的 MRI 扫描中观察到的骨挫伤数量及其位置（外侧胫骨平台[LTP]、外侧股骨髁[LFC]、内侧胫骨平台[MTP]和内侧股骨髁[MFC]）。
横断面研究；证据水平，3 级。
我们回顾了 136 例接受 ACL 重建的患者的临床记录、手术记录和影像学资料。应用以下排除标准：MRI 扫描在受伤后 6 周以上获得、接触性 ACL 损伤和既往膝关节创伤。由一名盲法肌肉骨骼放射科医生对脂肪抑制快速自旋回波 T2 加权 MRI 扫描进行了审查。记录了挫伤的数量及其位置（LTP、LFC、MTP 和 MFC）。
在 136 例患者中，有 135 例观察到骨挫伤。8 例（6%）患者有 1 处挫伤，39 例（29%）患者有 2 处，41 例（30%）患者有 3 处，47 例（35%）患者有 4 处。在这些组中，最常见的骨挫伤模式是 1 处 LTP（75%）、2 处 LTP/LFC（74%）、3 处 LTP/LFC/MTP（80%）和 4 处 LTP/LFC/MTP/MFC（100%）。在 4 个部位，性别差异未对挫伤频率产生影响（>.05）。在参与者中，有 50 例（37%）患者有内侧半月板撕裂，52 例（38%）患者有外侧半月板撕裂。
最常见的骨挫伤模式为 4 个部位（LTP/LFC/MTP/MFC）和 3 个部位（LTP/LFC/MTP）。
