目的　通过尸体解剖研究，比较掌侧逆行与顺行螺钉放置技术对腕舟骨外周血运的破坏情况，从而为临床上置钉方式的选择提供解剖学依据。方法    将5具新鲜冰冻尸体的上肢标本（共计10只），随机分为对照组（掌侧顺行螺钉放置技术）、试验组（掌侧逆行螺钉放置技术），每组5只，均按照各自手术方法完成模拟手术，经血管填充剂填充后进行局部解剖，观察并比较两组腕舟骨外周血运破坏情况。 结果    通过对5具新鲜冰冻尸体上肢标本的解剖学研究比较，试验组与对照组相比手术视野清晰，组织结构分辨清楚，血管填充剂渗出极少（P＜0.05）。 结论    经掌侧逆行螺钉放置技术与经掌侧顺行螺钉放置技术相比，前者对腕舟骨外周血运破坏较小，可最大限度保护腕舟骨血运。

Objective  To compare the difference of damage inflicted on the blood supply to the scaphoid by retrograde and anterograde screw placement technique through  cadaveric study, thus providing anatomical basis for the optimal approach of nail placement.  Methods   Five pairs of fresh frozen upper limbs (a total of 10) were randomly and equally divided into the control group (using the volar anterograde screw placement technique), the experimental group (the volar retrograde screw placement technique) simulated surgery was performed on the cadaver using the two different techniques. after the surgery, filling materials were injected into the arterial systems of the cadavers and dissection was carried out to observe the vascular conditions around the scaphoid.  Results  Through the anatomical study of the five pairs of fresh upper limbs, the surgical vision in the experimental group is clearer with more well-defined structures and less leakage of filling materials than that in the control group; also different tissues in the surgical field （P＜0.05）. Conclusion   When compared with the volar anterograde screw placement technique, The volar retrograde screw placement technique inflicts a milder damage to the blood supply to qscaphoid, can maximum limit protection wrist scaphoid blood supply.