Three-dimensional motions of distal syndesmosis during walking.
Three-dimensional motions of distal syndesmosis during walking.
复制标题
行走时远端韧带联合的三维运动
DOI：
10.1186/s13018-015-0306-5
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发表时间：
2015-10-24
影响因子：
2.6
通讯作者：
Wang K
中科院分区：
文献类型：
--
作者：
Wang C;Yang J;Wang S;Ma X;Wang X;Huang J;Zhang C;Chen L;Xu J;Geng X;Wang K
IntroductionThe运动的远侧联合高度相关的不稳定性，而一个准确的运动学描述的远侧胫腓关节在正常的步态还没有previous.Material和methodsSixteen健康的联合16个生活科目（8男8女）进行了研究，在正常步态的立场阶段。首先采集CT扫描数据，建立胫腓骨远端的三维模型。当受试者行走时，通过荧光透视捕获下胫腓联合的侧位X线图像。选择7个关键姿势图像用于随后的3D到2D骨模型配准，然后计算下胫腓联合的6个自由度（DOF）运动。结果站立期下胫腓关节背屈/跖屈（2. 98 ± 1. 10）°，内翻/外翻（5. 94 ± 1. 52）°，内旋/外旋（5. 99 ± 2. 00）°;内/外侧2.63 ± 1.05 mm，前/后3.86 ± 1.65 mm，上级/下级4.12 ± 1.53 mm。从脚跟着地到站立中期，下胫腓联合背屈1.69°，外翻3.61°，外旋3.95°。同样，从站立中期到脚跟离地，下胫联合的跖屈运动为1.04°，内翻运动为4.95°，内旋运动为5.13°。结论在正常步态的站立期，内旋/外旋运动和垂直运动分别占主导地位。
IntroductionThe motion of the distal syndesmosis correlates highly with the instability, while an accurate kinematic description of the distal tibiofibular joint during normal gait has not previously been presented.Material and methodsSixteen healthy syndesmoses of sixteen living subjects (8 male and 8 female) were studied during stance phase of the normal gait. Data of CT scanning were collected first and used to create the 3D models of the distal tibia and fibula. The lateral X-ray images of the syndesmosis were captured by fluoroscopy when the subject was walking. Seven key-pose images were selected for subsequent 3D to 2D bone model registration and six degrees-of-freedom (DOF) motions of syndesmosis were then calculated. A validation experiment was also conducted to confirm the accuracy of the 3D/2D technique for the syndesmosis.ResultsDuring the stance phase, the distal tibiofibular joint exhibited with 2.98 ± 1.10° of dorsi/plantarflexion, 5.94 ± 1.52° of inversion/eversion, and 5.99 ± 2.00° of internal/external rotation; 2.63 ± 1.05 mm on medial/lateral, 3.86 ± 1.65 mm on anterior/posterior, and 4.12 ± 1.53 mm on superior/inferior translation. From heel strike to mid-stance, the syndesmosis demonstrated 1.69° of dorsiflexion, 3.61° of eversion, and 3.95° of external rotation. Likewise, from mid-stance to heel-off, the syndesmosis presented 1.04° of plantarflexion, 4.95° of inversion, and 5.13° of internal rotation.ConclusionDuring the stance phase of normal gait, internal/external rotation and vertical motion play dominant roles in terms of rotation and translation, respectively.