Department of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No.138, Sheng-Li Road, Tainan, Taiwan, 70428.
Physical Therapy Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
BMC Musculoskelet Disord. 2022 Apr 29;23(1):402. doi: 10.1186/s12891-022-05368-9.
To investigate the relationship between the lateral femoral notch sign as well as the coronal lateral collateral ligament (LCL) sign and anterior tibial translation using the GNRB arthrometer in patients with anterior cruciate ligament (ACL) injuries.
Forty-six patients with ACL injuries were retrospectively included from May 2020 to February 2022; four patients were excluded due to incomplete data. Magnetic resonance imaging (MRI) were reviewed for the lateral femoral notch sign and the coronal LCL sign. The GNRB arthrometer was used to evaluate the dynamic anterior tibial translation of the knee, and the side-to-side differences (SSDs) in tibial translation between the injured knee and healthy knee were calculated at different force levels. Two types of slopes for displacement-force curves were acquired.
Six patients (14.3%) had the positive lateral femoral notch sign (notch depth > 2.0 mm), and 14 patients (33.3%) had the positive coronal LCL sign. The SSD of the anterior tibial translations under different loads as well as the slopes of displacement-force curves were the same in the positive and negative notch sign groups (p all > 0.05) and between the positive and negative coronal LCL sign groups (p all > 0.05). Meanwhile, the measured notch depth and notch length were also not significantly correlated with the anterior tibial translation SSD in the GNRB.
The presence of the lateral femoral notch sign and the coronal LCL sign did not indicate greater dynamic tibial laxity as measured using the GNRB.
使用 GNRB 关节仪研究 ACL 损伤患者的外侧股骨切迹征和冠状外侧副韧带（LCL）征与胫骨前向平移的关系。
回顾性纳入 2020 年 5 月至 2022 年 2 月的 46 例 ACL 损伤患者；由于数据不完整，排除了 4 例患者。对 MRI 进行外侧股骨切迹征和冠状 LCL 征评估。使用 GNRB 关节仪评估膝关节动态胫骨前向平移，并计算不同力水平下受伤侧和健康侧胫骨平移的侧间差异（SSD）。获得两种类型的位移-力曲线斜率。
6 例（14.3%）出现阳性外侧股骨切迹征（切迹深度>2.0mm），14 例（33.3%）出现阳性冠状 LCL 征。在不同负荷下，胫骨前向平移的 SSD 以及位移-力曲线的斜率在切迹征阳性和阴性组之间（p 均>0.05）以及在 LCL 征阳性和阴性组之间（p 均>0.05）均相同。同时，GNRB 测量的切迹深度和切迹长度与胫骨前向平移 SSD 也没有显著相关性。
外侧股骨切迹征和冠状 LCL 征的存在并不表示 GNRB 测量的动态胫骨松弛度更大。
