Hutton Kim A R, Babu Ramesh
Department of Paediatric Surgery, University Hospital of Wales, Heath Park, Cardiff, South Glamorgan, Wales, UK.
BJU Int. 2007 Jul;100(1):161-3. doi: 10.1111/j.1464-410X.2007.06798.x. Epub 2007 Apr 6.
Both papers in this section relate to the always difficult subject of hypospadias repair. One of them describes the anatomy of the external urethral meatus, and the other a technique for repairing coronal or subcoronal hypospadias.
To investigate the normal external urethral meatal anatomy in boys, and to examine the proportional relationship between meatal length and degree of ventral glans closure.
In all, 92 boys with presumed normal penile anatomy were considered eligible for the study; 17 were not assessed because either the boy or parents declined to participate, leaving 75 boys (mean age 6.9 years, range 0.3-15) who completed the study. Photographic records of the meatal appearance were obtained and meatal height and ventral glans closure measured using ophthalmic callipers.
All 75 boys in the study had a vertical slit-like meatus that commenced at the tip of the penis and ran ventrally. The mean (sd) vertical meatal length was 5.4 (1) mm and the mean length of ventral glans closure was 4.7 (1.2) mm. There was an age-dependent increase in meatal length and a similar association was identified for the length of ventral glans closure. There was also a statistically significant proportional relationship between meatal length and length of glans closure (r = 0.36, confidence interval 0.14-0.54, P < 0.002).
The position and size of the external urethral meatus in normal boys is consistent, and ventral glans closure is equal to or slightly less than meatal length. These data might be of interest to hypospadiologists in their efforts to reconstruct normal glanular anatomy.
本节中的两篇论文均涉及一直颇具难度的尿道下裂修复主题。其中一篇描述了尿道外口的解剖结构，另一篇介绍了冠状沟或冠状沟下型尿道下裂的修复技术。
研究男孩正常尿道外口的解剖结构，并探讨尿道口长度与龟头腹侧闭合程度之间的比例关系。
总计92名阴茎解剖结构假定正常的男孩被认为符合该研究条件；17名男孩因本人或家长拒绝参与而未被评估，最终75名男孩（平均年龄6.9岁，范围0.3 - 15岁）完成了研究。获取尿道口外观的照片记录，并使用眼科卡尺测量尿道口高度和龟头腹侧闭合情况。
研究中的75名男孩均有一条垂直的裂隙状尿道口，起始于阴茎顶端并向腹侧延伸。尿道口垂直长度的均值（标准差）为5.4（1）毫米，龟头腹侧闭合的平均长度为4.7（1.2）毫米。尿道口长度随年龄增长，龟头腹侧闭合长度也有类似关联。尿道口长度与龟头闭合长度之间还存在统计学上显著的比例关系（r = 0.36，置信区间0.14 - 0.54，P < 0.002）。
正常男孩尿道外口的位置和大小是一致的，龟头腹侧闭合长度等于或略小于尿道口长度。这些数据可能会引起尿道下裂修复专家在重建正常龟头解剖结构方面的兴趣。
