1·Objective. To evaluate the functional and oncological outcomes following en bloc tumor excision for sacral chordomas and chondrosarcomas.
目的。评价骶骨脊索瘤及软骨肉瘤行肿瘤整块切除术后功能及肿瘤学结果。
2·The methods include posterior ring internal fixation by using sacral bars, four-hole square plates or cancellous screws with anterior ring fixed by plates.
固定方法有：前环骨折采用钢板固定；后环骨折分离采用骶骨棒，四孔方形钢板，松质骨螺钉固定。
3·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。
4·Resection of sacral tumors has been shown to improve survival, since the oncological prognosis is commonly correlated with the extent of local tumor control.
通常认为肿瘤预后和肿瘤的局限范围有关，所以骶骨肿瘤切除术被认为能延长生存期。
5·Commonly overlooked, sacral fractures should be considered as part of the pelvic ring.
常被忽视，骶骨骨折应被视作骨盆环的一部分。
1·According to the concept of sagittal spinal balance, the alternating curves of cervical and lumbar lordosis and thoracic and sacral kyphosis enable the head to be positioned over the trunk and pelvis.
根据矢状面上脊柱平衡的理念，颈椎和腰椎的前凸，胸椎和骶椎的后凸构成的交替曲线使头能够定位与躯体和骨盆的上方。
2·No bony canal stenosis, but a widened dural sac at lower lumbar and sacral level.
无骨性椎管狭窄，但是在下腰部和骶椎层面硬膜囊增宽。