Joseph Rotem, Milgram Joshua, Zhan Klaus, Shahar Ron
Laboratory of Biomechanics and Applied Anatomy, Koret School of Veterinary Medicine, The Hebrew University of Jerusalem.
Vet Surg. 2006 Aug;35(6):510-7. doi: 10.1111/j.1532-950X.2006.00184.x.
To define landmarks on the canine ilial wing for accurate, consistent insertion of implants into the 1st sacral (S1) vertebral body when the sacroiliac joint is intact.
Anatomic study.
Intact, cadaveric canine pelves and sacra (n=25).
Median sections (5 specimens) were drilled from the center of S1 in a lateral direction, exiting on the ilial wing. Landmarks on the ilial wing and shaft used to define this exit point were then used to locate this point on both wings of 20 articulated specimens, positioned and rigidly held so that the dorsal plane of the pelvis was aligned with a plumb line and the median plane of the pelvis was horizontal. A 2 mm hole was drilled from the marked point, parallel to the plumb line, until it exited the contralateral ilial wing. Distance of drill hole position from the geometric center (GC) of S1 was located on median and paramedian plane images derived from plane, computed tomographic (CT) scans.
The entire drill hole was located within S1 in 18 specimens. Mean deviation of the hole from GC (ratio of the distance of GC from the closest S1 body border) in median section was 0.40 +/- 0.29 (craniocaudal direction) and 0.29 +/- 0.23 (dorsoventral).
Use of ilial wing landmarks and drilling perpendicular to the median plane will improve accuracy for insertion of implants into S1 when the sacroiliac joint is intact.
Ilial wing landmarks should be used to improve accuracy of implant insertion into S1.
确定犬髂骨翼上的标志点，以便在骶髂关节完整时将植入物准确、一致地插入第一骶椎（S1）椎体。
解剖学研究。
完整的犬尸体骨盆和骶骨（n = 25）。
从S1中心向外侧面钻孔制作正中矢状面切片（5个标本），穿出髂骨翼。然后使用髂骨翼和骨干上用于确定该穿出点的标志点，在20个关节标本的双侧髂骨翼上定位该点，将标本定位并牢固固定，使骨盆的背侧平面与铅垂线对齐，骨盆的正中平面呈水平。从标记点平行于铅垂线钻一个2毫米的孔，直到穿出对侧髂骨翼。从平面计算机断层扫描（CT）扫描获得的正中矢状面和旁正中矢状面图像上确定钻孔位置与S1几何中心（GC）的距离。
18个标本中整个钻孔均位于S1内。正中矢状面切片中钻孔与GC的平均偏差（GC到最近的S1椎体边缘距离的比值）在颅尾方向为0.40±0.29，在背腹方向为0.29±0.23。
当骶髂关节完整时，使用髂骨翼标志点并垂直于正中平面钻孔将提高植入物插入S1的准确性。
应使用髂骨翼标志点提高植入物插入S1的准确性。
