Technically, back labor occurs when the fetus is in a posterior position, with its face up and the back of its head pressing against your sacrum, or the back of your pelvis.
从技术上来说，背阵痛发生在胎儿处于背对的位置，它的脸朝上而后脑勺紧靠你的骶骨或者骨盆后方。
Of these 98 anterior sacral injuries, 47 (48.0%) were complete, passing through the sacrum and exiting the posterior cortex.
在上述98例骶骨前部损伤中，47(48.0%)处为完全损伤，其骨折线贯穿骶骨、穿出后方皮质。
Complicated pelvic fracture including sacrum bone fracture mostly displays pelvic posterior ring injuries.
复杂的骨盆骨折多数存在骨盆后环损伤，包括骶骨骨折。
Method From 1999 to 2005, 27 patients with lumbar and sacrum spine tuberculosis were treated surgically by posterior transpedicular screw system internal fixation and interbody fusion.
方法总结1999年2月- 2005年9月采用后路椎弓根系统内固定及前路病灶清除植骨融合治疗腰骶段脊柱结核27例患者临床资料。
Objective To study the influence of excision of sacrum through the superior and inferior margins of the 1st to 3rd posterior sacral foramina on area of sacroiliac joint surface.
目的研究经第1~3骶后孔上、下缘水平切除骶骨对骶髂关节面面积的影响。
Posterior Transpedicular Screw System Internal Fixation and Interbody Fusion in the Tuberculosis of Lumbar and Sacrum Spine;
目的探讨后路椎弓根固定联合前路病灶清除植骨融合治疗腰骶段脊柱结核的临床效果。
Posterior Transpedicular Screw System Internal Fixation and Interbody Fusion in the Tuberculosis of Lumbar and Sacrum Spine;
目的探讨后路椎弓根固定联合前路病灶清除植骨融合治疗腰骶段脊柱结核的临床效果。
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