Increased tibiofemoral cartilage contact deformation in patients with anterior cruciate ligament deficiency.
Increased tibiofemoral cartilage contact deformation in patients with anterior cruciate ligament deficiency.
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DOI：
10.1002/art.24965
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发表时间：
2009-12
影响因子：
--
通讯作者：
Li, Guoan
中科院分区：
文献类型：
--
作者：
Van de Velde, Samuel K.;Bingham, Jeffrey T.;Hosseini, Ali;Kozanek, Michal;DeFrate, Louis E.;Gill, Thomas J.;Li, Guoan
研究前交叉韧带 (ACL) 损伤后胫股关节的体内软骨接触生物力学。八名单膝 ACL 损伤且对侧完好的患者参与了这项研究。使用特定的 MR 序列对两个膝盖进行成像，以创建骨骼和软骨的三维膝盖模型。接下来，每位患者进行弓步，同时使用双荧光镜系统记录从 0° 到 90° 屈曲的图像。三维膝关节模型和荧光透视图像用于再现每个屈曲角度的体内膝关节位置。通过这一系列膝关节模型，比较了完整膝关节和 ACL 缺陷膝关节之间的胫股软骨接触位置、接触区域大小、接触区域软骨厚度以及软骨接触变形程度。 ACL 的断裂改变了膝关节内侧间室的软骨接触生物力学，从 0° 弯曲到 60°。胫骨平台上软骨接触变形峰值的位置更靠后和外侧；接触面积较小；胫骨软骨接触区平均软骨厚度较薄；与对侧膝关节相比，由此产生的软骨接触变形幅度增大。在外侧间室中也观察到类似的变化，ACL 缺陷的膝关节屈曲从 0° 到 30° 时软骨接触变形增加。 ACL 缺陷通过将接触位置转移到更薄软骨的较小区域并增加软骨接触变形的幅度来改变体内软骨接触生物力学。
To investigate the in-vivo cartilage contact biomechanics of the tibiofemoral joint following anterior cruciate ligament (ACL) injury. Eight patients with an isolated ACL injury in one knee and the contralateral side intact participated in the study. Both knees were imaged using a specific MR sequence to create three-dimensional knee models of bone and cartilage. Next, each patient performed a lunge as images were recorded with a dual fluoroscopic system from 0° to 90° of flexion. The three-dimensional knee models and fluoroscopic images were used to reproduce the in-vivo knee position at each flexion angle. With these series of knee models, the location of tibiofemoral cartilage contact, size of contact area, cartilage thickness at the contact area, and magnitude of cartilage contact deformation were compared between the intact and ACL-deficient knees. Rupture of the ACL changed the cartilage contact biomechanics from 0° to 60° of flexion in the medial knee compartment. The location of peak cartilage contact deformation on the tibial plateaus was more posterior and lateral; the contact area was smaller; the average cartilage thickness at the tibial cartilage contact area was thinner; and the resultant magnitude of cartilage contact deformation was increased, compared with the contralateral knee. Similar changes were observed in the lateral compartment, with increased cartilage contact deformation from 0° to 30° of knee flexion in ACL deficiency. ACL deficiency alters the in-vivo cartilage contact biomechanics, by shifting the contact location to smaller regions of thinner cartilage, and increasing the magnitude of cartilage contact deformation.
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DOI：
10.1016/0020-1383(90)90130-m
发表时间：
1990-11-01
影响因子：
2.5
作者：
FAIRCLOUGH, JA;GRAHAM, GP;DENT, CM
通讯作者：
DENT, CM
影响因子：
2.4
作者：
ATESHIAN, GA;SOSLOWSKY, LJ;MOW, VC
通讯作者：
MOW, VC
影响因子：
--
作者：
Hernandez-Molina, Gabriela;Guermazi, Ali;Felson, David T.
通讯作者：
Felson, David T.
影响因子：
5
作者：
BRANDT, KD
通讯作者：
BRANDT, KD
影响因子：
4.8
作者：
Georgoulis, AD;Papadonikolakis, A;Stergiou, N
通讯作者：
Stergiou, N