穿透深度

Strabismus diorthosis under microscope has clear advantages compared with traditional strabismus diorthosis. The muscle, blood tube and the move of needle in sclera as well as the depth can be seen clearly during the operation which make the operation easy to control, so we can properly and correctly perform the operation, shorten the operation time and avoid complications like blooding, penetrate sclera which often occur during the traditional operation. The strabismus diorthosis under microscope using general micro equipments can also separate structure correctly with fewer operation steps, light reaction after operation, sooner recovery after operation, which is suit to patient who needs strabismus diorthosis.

显微镜下斜视矫正术较传统直视下斜视矫正术具有较明显优势，可以清晰地看清肌肉、血管、及针在巩膜内的走行、深浅，使手术较易掌控，可以使手术量及手术操作准确无误，缩短手术时间、避免出血、穿透巩膜等直视下手术常见的并发症的发生，同时组织分离准确，操作减少，也直接减轻了术后反应，缩短了术后恢复时间，适合所有需斜视手术患者，优势为初学者易掌握巩膜进针深度。

From 2004 to 2007, 34 cases were treated with extrapedicular screw fixation in Department of Orthopaedics, Third Affiliated Hospital of Sun Yat-sen University. The screw entry point, angle, depth and diameter were measured and defined on the thoracic vertebrae pedicle by CT thin-slice scan in standard prone for all cases before operation. The screw entry point was located at the tip of transverse process. The average inclination angle should be 10°-20° headward and 30°-40° toward neutral line respectively. The screw was inserted and entered into the vertebral body along the external cortex of pedicle. The integrity of cortical bone around screws, the distance to segmental blood vessels and the penetration of cortex were observed after operation to evaluate the accuracy and safety of screw placement.

应用椎弓根外内固定技术2004/2007年在中山大学附属第三医院骨科治疗34例患者，固定前采用CT加密扫描测量进钉点、进钉点至椎体前缘的深度、进钉角度和直径，固定中椎弓根钉入点为横突尖，进钉方向为平均向头侧倾斜10°~20°、与中线成角30°~40°，顺椎弓根外侧皮质进入椎体，固定后CT加密扫描观察螺钉周围的皮质骨是否完整、是否靠近节段血管、是否穿透皮质骨，评价置入钉的准确性和安全性。34例患者共置入160枚胸椎椎弓根螺钉，固定后CT加密扫描和X射线片观察到148枚(92.5%)螺钉置入准确，12枚(7.5%)螺钉发生错置。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。