摘要
目的研究寰椎横韧带的形态特点及其抗拉伸性能。方法成人寰枢椎固定标本24例及新鲜寰椎韧带标本9例。测量横韧带中点处的厚度、宽度以及左右两端的宽度。取2例新鲜横韧带标本行组织学切片观察。对7例新鲜横韧带标本,通过MTS-858材料试验机测量其抗拉伸性能。结果寰椎横韧带的长度为(20.0±2.4)mm;中点处的宽度为(2.1±0.5)mm;中点处的宽度为(10.7±1.6)mm;左右两端的厚度分别为(6.6±1.1)mm、(6.7±1.0)mm;左右两端的厚度分别为(3.8±1.1)mm、(3.7±1.1)mm。横韧带与枢椎齿突的关系可分为3种类型:(1)横韧带将齿状突后面完全包裹,占30%(10例);(2)横韧带包裹齿状突后面的大部,超过1/2,占54%(18例);(3)部分覆盖齿状突的后部,不超过其1/2,占14%(5例)。寰椎横韧带的齿状突面的中部可见有纵行的纤维,组织切片显示为较疏松的结缔组织。横韧带的最大载荷为(606±90)N,最大变形量为(4.3±0.5)mm。结论(1)本文结果与国外的相关报道比较,在长度上较白种人稍短,而与黄种人相近,这与人种的高矮有关。(2)寰椎横韧带与齿突接触面的中部可有条索状的疏松结缔组织存在。(3)寰椎横韧带与枢椎齿突的关系不恒定,这可能与齿突骨折的发生相关。
Aim To study the anatomic parameters and anti stretch property of transverse ligament of atlas.Methods 24 adult C1- 2 fixated specimens and 9 fresh transverse ligament specimens were used.To observe the anatomic characters of the transverse ligament specimens were used.To observe the anatomic characteristics of the transverse ligament of atlas,measure the length,thickness and the width in center and the widths in both sides.Two of the nine fresh transverse ligament specimens were observed in histology,and seven of them were used to test the anti stretch property on a material testing machine(MTS 858 Bionix test system,USA).Results The length of the transverse ligament of atlas is (20.0± 2.4) mm,the thickness of the center is (2.1± 0.5 )mm,the width of the center is (10.7± 1.6) mm,the widths of left and right end are (6.6± 1.1) mm and (6.7± 1.0) mm,respectively,and the thickness of the two ends are (3.8± 1.1) mm and (3.7± 1.1) mm,respectively.The relationship between the transverse ligament of atlas and the odontoid process of axis is classified by three types:(1)The odontoid process is completely coated by the transverse ligament from behind,10 of 33 (30% ) were observed in our study.(2)The odontoid process is partly,but more than 1/2,coated by the transverse ligament,18 of 33 (54.5% ) were observed in our study.(3)The odontoid process is partly,but less than 1/2,coated by the transverse ligament,5 of 33(15.2% ) were observed in our study.In the central part of the surface of the transverse ligament,which is facing the odontoid process,some longitudinal fibers had been found and confirmed to be loose connective tissue in histology.The average of the max load of the transverse ligament is (606± 90)N,and the average of the max deformation of the transverse ligament is (4.3± 0.5) mm.Conclusion Contrast to the foreigner's,the transverse ligament of atlas of Chinese people is shorter than that of White race,and it almost the same as that of Yellow race.In the surface of the transverse ligament of atlas,which is facing the odontoid process,there may have some loose connective tissue.The relationship between the transverse ligament and the odontoid process is not invariable which may be the anatomic base of the dens fracture.<P>
出处
《中国临床康复》
CSCD
2003年第17期2386-2387,T001,共3页
Chinese Journal of Clinical Rehabilitation
