骶管阻滞麻醉的解剖学研究

Anatomic studies on block anesthesia of sacral canal

针对临床骶管阻滞麻醉所提出的问题,对100例成人干燥骶骨和20具成人尸体标本骶管及骶骨背面邻近区域的有关结构进行了观测。S_2棘突中点至两骶角连线中点长度平均为66.2±9.3mm.在干燥骨标本上,用薄乳胶膜囊直接灌水法测量了骶管容积,平均为16.1±3.6ml。骶管容积(Yml)与 S_2棘突中点至两骶角连线中点长度(Xmm)的关系,呈抛物线回归,方程为:y=15.1867-0.3454x+0.0053x^2。因两侧髂后上棘连线过S_2棘突中点,临床可以此定位,测出 X,估算注药量。经临床100例骶管阻滞麻醉应用,效果满意,初步证明了本研究的实用意义。

For clinical application of blockanesthesia,the sacral canal and itsneighboring structures were investiga-ted and measured on 100 sacra and 20adult cadaver specimens.The length(L)from the spinous process of thesecond sacral vertebra(S2)to themiddle point of the line between thetwo sacral horns is 66.2±9.3mm(X±SD).The volume(V)of the scaralcanal,which was measured by directperfusion of water with thin emulsoidcapsule,is 16.1±3.6ml((?)+SD).The volume(V)is parabola regressi-ve with the length(L)i.e.V=15.1867-0.3653L+0.053L^2.The line linkingthe two posterior iliac spines passesthrough the spinous process of S2,sothe length(L)could be measured andthe volume(V),which indicates theamount of anesthetic,might be calc-ulated.Clinical application with thismethod showed a satisfactory resultin 100 cases.