Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Arthroscopy. 2011 Sep;27(9):1235-41. doi: 10.1016/j.arthro.2011.03.085. Epub 2011 Jul 20.
The aim of this study was to determine whether individuals with anterior cruciate ligament (ACL) injuries have smaller notch volumes than uninjured subjects. A secondary aim was to determine the correlation between intraoperative 2-dimensional (2D) notch measurements, patient demographic factors, and notch volume.
Manual digital tracings of the femoral intercondylar notch perimeter were performed on axial magnetic resonance images to calculate 3-dimensional (3D) notch volume. Notch volume was compared between 50 patients with ACL injury and 50 patients without ACL injury (control subjects). From the 50 patients with ACL injury, intraoperative 2D measurements of the notch were taken. These 2D measurements and patient demographic factors were correlated to 3D notch volume, by use of the Pearson correlation coefficient. In addition, notch size was compared between men and women. All group comparisons were performed by use of unpaired t tests.
The notch volume was larger (6.5 ± 1.7 cm(3) [mean ± SD]) for the group with ACL injury compared with control subjects (5.9 ± 1.4 cm(3)); this difference approached statistical significance (P = .054). There were no significant correlations between the 2D dimensions and the 3D notch volume. Larger notch volumes were significantly correlated with increased subject height (r = 0.636, P < .001) and weight (r = 0.364, P < .001) but not body mass index (P = .269). Male patients had significantly larger notch volumes than female patients (P < .001).
Contrary to our hypothesis, there was a trend toward larger notch volumes in patients with ACL injury compared with patients without ACL injury. Intraoperative notch measurements did not correlate with 3D notch volume. Notch volume was related to patient height, weight, and gender but not body mass index.
Level III, case-control study.
本研究旨在确定前交叉韧带（ACL）损伤患者的神经切迹容积是否小于未受伤的患者。次要目的是确定术中二维（2D）切迹测量值、患者人口统计学因素与神经切迹容积之间的相关性。
对轴向磁共振图像进行股骨髁间窝的手动数字描迹，以计算三维（3D）切迹容积。将 50 例 ACL 损伤患者与 50 例无 ACL 损伤的患者（对照组）进行比较。从 50 例 ACL 损伤患者中，术中进行了神经切迹的 2D 测量。使用 Pearson 相关系数将这些 2D 测量值和患者人口统计学因素与 3D 切迹容积相关联。另外，比较了男性和女性的切迹大小。所有组间比较均采用独立样本 t 检验。
与对照组相比，ACL 损伤组的切迹容积更大（6.5 ± 1.7 cm3）；差异有统计学意义（P =.054）。2D 尺寸与 3D 切迹容积之间无明显相关性。较大的切迹容积与患者身高（r = 0.636，P <.001）和体重（r = 0.364，P <.001）呈显著正相关，但与体重指数（P =.269）无关。男性患者的切迹容积显著大于女性患者（P <.001）。
与我们的假设相反，ACL 损伤患者的切迹容积有增大的趋势，而无 ACL 损伤患者的切迹容积则无明显变化。术中切迹测量值与 3D 切迹容积无相关性。切迹容积与患者身高、体重和性别有关，但与体重指数无关。
III 级，病例对照研究。
