Olsen B S, Vaesel M T, Søjbjerg J O, Helmig P, Sneppen O
Biomechanics Laboratory, Shoulder and Elbow Clinic, University Hospital of Aarhus, Denmark.
J Shoulder Elbow Surg. 1996 Mar-Apr;5(2 Pt 1):103-12. doi: 10.1016/s1058-2746(96)80004-8.
The structure and kinematics of the lateral collateral ligament of the elbow joint were investigated in 10 cadaveric specimens. The lateral collateral ligament was observed to be a distinct part of the lateral collateral ligament complex. It contains posterior fibers that pass through the annular ligament and insert on the ulna. Three-dimensional kinematic measurements in different forearm rotations showed that joint puncture induced a 1 degree joint laxity significant in forced varus from 30 degrees to 80 degrees of flexion and in forced external rotation from 30 degrees to 120 degrees of flexion. Division of the posterolateral capsule caused no further laxity. Cutting the lateral collateral ligament induced a maximum laxity of 11.8 degrees at 110 degrees of flexion in forced varus and a maximum laxity of 20.6 degrees at 110 degrees of flexion in forced external rotation. The corresponding maximal posterior radial head translation was observed at 80 degrees to 100 degrees of flexion and was 5.7 mm in forced varus and 8.1 mm in forced external rotation. This study suggests the lateral collateral ligament to be an important stabilizer of the humeroulnar joint and the radial head in forced varus and external rotation. The humeroulnar stability is independent of forearm rotation.
在10个尸体标本上研究了肘关节外侧副韧带的结构和运动学。观察到外侧副韧带是外侧副韧带复合体的一个独特部分。它包含穿过环状韧带并附着于尺骨的后纤维。在不同前臂旋转情况下进行的三维运动学测量表明，关节穿刺在30度至80度屈曲的强迫内翻以及30度至120度屈曲的强迫外旋中导致1度的关节松弛，具有显著性。切开后外侧关节囊未导致进一步的松弛。切断外侧副韧带在110度屈曲的强迫内翻中导致最大松弛度为11.8度，在110度屈曲的强迫外旋中导致最大松弛度为20.6度。在80度至100度屈曲时观察到相应的最大桡骨头向后移位，强迫内翻时为5.7毫米，强迫外旋时为8.1毫米。本研究表明外侧副韧带是肱尺关节和桡骨头在强迫内翻和外旋中的重要稳定结构。肱尺关节的稳定性与前臂旋转无关。
