【摘要】 目的：研究骶前区静脉丛（Ｖｅｎｏｕｓ ｐｌｅｘｕｓ ｏｆ ｐｒｅｓａｃｒａｌ ｒｅｇｉｏｎ ，ＶＰＰＳＲ） 的解剖学特点，为骶前区静脉破裂大出血的防治提供解剖学基础。方法：在３４ 具成人尸体上，分虽观测ＶＰＰＳＲ 的组成、管壁、瓣膜、长度及直径。结果：ＶＰＰＳＲ 管壁薄、缺少静脉瓣，呈网状。ＶＰＰＳＲ Ｓ１～５ 横干的长度和直径（ Ｆ 检验） 均有显著差异，Ｐ＜ ０ ．０５ 。其长度平均（ 珋ｘ ±ｓ） ：Ｓ１ 为３ ．２ ±１ ．５ ｃｍ ，Ｓ２ 为４ ．４ ±１ ．０ ｃｍ ，Ｓ３ 为３ ．５ ±１ ．１ ｃｍ ，Ｓ４ 为２ ．３ ±０ ．９ ｃｍ ，Ｓ５ 为１ ．０ ±０ ．３ ｃｍ ；其直径平均（珋ｘ ±ｓ） ：Ｓ１ 为１ ．２ ±０ ．７ ｍ ｍ ，Ｓ２ 为２ ．５ ±１ ．５ ｍ ｍ ，Ｓ３ 为２ ．５ ±１ ．５ ｍ ｍ ，Ｓ４为１ ．７ ±１ ．５ ｍ ｍ ，Ｓ５ 为０ ．９ ±０ ．６ ｍ ｍ 。Ｓ４ 椎体前穿通支静脉口径２ ～４ ｍ ｍ 占８ ．８ ％ ，０ ．１ ～１ ．９ ｍ ｍ 占９１ ．２ ％ 。结论：ＶＰＰＳＲ 解剖变异多、血管壁薄、缺少静脉瓣是引起ＶＰＰＳＲ 损伤大出血甚至死亡的解剖学基础。更多还原

【Abstract】 To provide anatomic basis for precaution and treatment of the massive hemorrhage of venous plexus of presacral region (VPPSR) in Mile’s operation.Methods:The composition、venous wall、venous valves、lengths and diameters of VPPSR were observed and measured on 34 adult cadavers.Results:The thin venous wall and the network lacking venous valve of VPPSR were observed on cadavers.The lengths and diameters of S 1～5 transverse trunks( F test)were remarkable different( P <0.05).The lengths ( ±s) are as followe:S 1 3.2±1.5 cm,S 2 4.4±1.0 cm,S 3 3.5±1.1 cm,S 4 2.3±0.9 cm and S 5 1.0±0.3 cm.The diameters ( ±s) follow:S 1 1.2±0.7 mm,S 2 2.5± 1.5 mm,S 3 2.5±1.5 mm,S 4 1.7±1.5 mm and S 5 0.9±0.6 mm,8.8% of the penetrating tributaries of basivertebral veins before the S 4 vertebra were 2～4 mm in diameter,91.2%were 0.1～1.9 mm.Conclusion:The anatomical variation,thin venous wall and lack of venous valve were the anatomical bases leading to massive hemorrhage even death when the VPPSR was damaged.更多还原