Olsen B S, Søjbjerg J O, Dalstra M, Sneppen O
Biomechanics Laboratory, Shoulder and Elbow Clinic, University Hospital of Aarhus, Denmark.
J Shoulder Elbow Surg. 1996 Sep-Oct;5(5):333-41. doi: 10.1016/s1058-2746(96)80063-2.
Thirty osteoligamentous elbow joint specimens were included in a study of the lateral collateral ligament complex (LCLC). The morphologic characteristics of the LCLC were examined, and then three-dimensional kinematic measurements were undertaken after selective ligament dissections were performed. Isolated sectioning of the annular ligament (AL) or the lateral ulnar collateral ligament (LUCL) induced only minor laxity to the elbow joint with a maximum of 2.2 degrees and 4.4 degrees during forced varus and external rotation (supination), respectively. Transsection of the lateral collateral ligament (LCL) caused a maximal laxity of 15.4 degrees and 22.8 degrees during forced varus and external rotation (supination), respectively. Combined ligament dissections showed that total transection of the LCLC at the ulnar or the humeral insertion was important for joint laxity. Total transection of the LCLC at the humeral or the ulnar insertion induced a maximal laxity of 24.5 degrees and 37 degrees during forced varus and external rotation (supination), respectively. This study suggests the AL and the LUCL are of minor importance as constraints when cut separately, whereas the LCL is a significant preventer of elbow joint laxity. The LCLC was observed to be a complex structure of ligamentous fibers rather than discreet bands. The LCLC forms a ligamentous constraint between the lateral humeral epicondyle and the ulna, stabilizing the elbow joint and forming a base for radial head stability and rotation.
30个骨韧带性肘关节标本被纳入一项关于外侧副韧带复合体（LCLC）的研究。对LCLC的形态特征进行了检查，然后在进行选择性韧带解剖后进行三维运动学测量。单独切断环状韧带（AL）或尺侧副韧带（LUCL）仅使肘关节产生轻微松弛，在强迫内翻和外旋（旋后）时最大分别为2.2度和4.4度。切断外侧副韧带（LCL）在强迫内翻和外旋（旋后）时分别导致最大松弛度为15.4度和22.8度。联合韧带解剖显示，在尺骨或肱骨附着处完全切断LCLC对关节松弛很重要。在肱骨或尺骨附着处完全切断LCLC在强迫内翻和外旋（旋后）时分别导致最大松弛度为24.5度和37度。本研究表明，单独切断时，AL和LUCL作为限制因素的重要性较小，而LCL是肘关节松弛的重要预防因素。观察到LCLC是一个由韧带纤维组成的复杂结构，而不是离散的束带。LCLC在肱骨外侧髁和尺骨之间形成韧带约束，稳定肘关节，并为桡骨头的稳定性和旋转形成基础。
