结合腹腔镜下根治性前列腺切除术术式特点，寻找盆腔定位标志，以提供理论知识和减少术后并发症。

解剖7例成年男性盆腔标本，观察膀胱颈、前列腺侧方及尖部周围组织，并测量定位。

膀胱颈与前列腺底交界处有两条肌性纵行纤维束，横径为（4.42±1.38）mm，距离膀胱正中线（1.78±0.32）mm。膀胱前列腺间沟后外侧有一较恒定的前列腺动脉干，距沟（16.34±5.76）mm处呈"爪"形分支。盆丛位于直肠两侧，其上部内侧发出直肠丛。下部纤维在前列腺后外侧构成宽约5.40 mm的神经血管束（NVB）。NVB内含海绵体神经，于前列腺尖部5点、7点外（2.84±0.56）mm处进入。阴茎背神经在距前列腺尖部（2.78±1.04）mm处发出细小分支，进入尿道外括约肌的5点、7点。括约肌亦受NVB发出的细小纤维支配，分布于3～5点、7～9点位。

术中离断膀胱颈部时，可根据膀胱颈部肌性纵行纤维束位置切开。以膀胱前列腺间沟为标志，距离其25 mm以上结扎动脉。通过辨认NVB中的小血管避免损伤海绵体神经。分离前列腺尖部、离断尿道、吻合膀胱颈尿道时，勿损伤其5、7点位的神经。术中寻找上述标志，最大程度保留组织，为减少术后并发症提供了参考。

To provide more knowledge that is theoretical and reduce postoperative complications by finding the useful pelvic landmarks, on the characteristics of laparoscopic radical prostatectomy basis.

Seven adult male pelvic specimens were anatomised. The bladder neck, both the lateral sides of prostate and the surrounding tissues of prostatic apex were observed, measured and positioned.

There were two muscularly longitudinal fibers at the junction of the bladder neck and the prostate, with a transverse diameter of (4.42±1.38) mm and a distance of (1.78±0.32) mm from the center of the bladder. There was a constantly "claw-shaped" prostatic arterial trunk, which was (16.34±5.76) mm away from bladder-prostate groove. Pelvic plexus were located on both sides of the rectum, the upper part contributed to rectal plexus, and the lower part formed nerve vessel bundle (NVB) in the posterolateral aspect of prostate, which was approximately 5.40 mm wide. NVB contained the cavernous nerve entering the apex of prostate at 5 o'clock and 7 o'clock, with the distance of (2.84±0.56) mm. Penis dorsal nerve issued small branches into the urethral sphincter at 5 o'clock and 7 o'clock when it was (2.78±1.04) mm away from the apex. Sphincter was also innervated by the small fibers issued by NVB, distributing from 3 to 5 o'clock and 7 to 9 o'clock.

Bladder neck can be cut down according to the muscularly longitudinal fiber. The ligation of the artery can be performed at the level of 25 mm or more above the lateral aspect of groove. To avoid making damage to the cavernous nerve by recognizing small blood vessels in NVB. When separating the prostatic apex, cutting down urethra, even performing anastomosis of the bladder neck and urethra, do not damage the nerves around 5 o'clock and 7 o'clock. To find the above landmarks, the incidence of complications may be lowed.