Vilkman E A, Pitkänen R, Suominen H
Acta Otolaryngol. 1987 Jan-Feb;103(1-2):117-26. doi: 10.3109/00016488709134706.
We examined quantitatively the ventrodorsal gliding occurring along a sagittal plane in the cricothyroid articulation. For this purpose we used 10 fresh excised human larynges taken at autopsy. Furthermore we examined the morphology, the hydroxyproline content and collagen types of the ligaments and the articular capsule of the cricothyroid articulation. This articulation appeared to be a synovial joint, supported by two ligaments: the lateral and posterior ceratocricoid ligament and articular capsule. The ligaments and the capsule contained both type I and type III collagen fibres and they were rich in elastin fibres 1-2.5 microns in diameter. Ventrodorsal gliding was generally possible when the joint was not rotated to its extremes. The marked individual variation was not essentially affected by sex or age. The collagen content of the lateral ceratocricoid ligament showed a statistically significant negative correlation with the gliding. The articular facet of the cricoid cartilage, which was not usually well-shaped, limits the gliding. A force of +/- 1.0 N caused on the average a change of +/- 1.0 mm in the length of the vocal cord. Further research is needed to evaluate the physiological importance of these findings.
我们定量研究了环状软骨关节在矢状面发生的腹背向滑动。为此，我们使用了10个在尸检时获取的新鲜切除的人体喉部。此外，我们还研究了环状软骨关节韧带和关节囊的形态、羟脯氨酸含量及胶原类型。该关节似乎是一个滑膜关节，由两条韧带支撑：外侧和后侧环甲韧带以及关节囊。韧带和关节囊含有I型和III型胶原纤维，并且富含直径为1 - 2.5微米的弹性纤维。当关节未旋转至极限时，通常可发生腹背向滑动。显著的个体差异在本质上不受性别或年龄的影响。外侧环甲韧带的胶原含量与滑动呈统计学上显著的负相关。环状软骨的关节面通常形状不佳，限制了滑动。平均而言，±1.0 N的力会使声带长度产生±1.0 mm的变化。需要进一步研究以评估这些发现的生理重要性。
