Urology Department, Haydarpasa Teaching Hospital, Gulhane Military Medical Academy, Uskudar, Istanbul, Turkey.
J Urol. 2012 Oct;188(4):1319-23. doi: 10.1016/j.juro.2012.06.047. Epub 2012 Aug 16.
Genital development is affected by pubertal process to a great extent, and puberty is a complex phenomenon that is influenced by multiple factors resulting in individual differences. We studied penile length and its relationship to pubertal stage in boys 13 to 15 years old.
Healthy boys who were candidates for military high school were evaluated between June and July 2011. Age, residence and body mass index were recorded. Stretched penile length was measured. Pubic hair was assessed according to Tanner and Marshall staging. Genital puberty stage was defined by measurement of testicular volume with Prader orchidometer. Relationship of penile length to age, residence, pubertal stages and body mass index was evaluated statistically.
A total of 1,539 boys were included in the study. Mean ages and number of patients according to genital stage were as follows. Mean age was 14 years for genital stage 1 (5 patients), 13.9 years (range 13 to 15) for stage 2 (194), 14.07 years (13 to 15) for stage 3 (965) and 14.11 years (13 to 15) for stage 4 (375). Linear regression analysis revealed a significant effect of body mass index, genital stage and pubic hair stage on penile length (p <0.001) but no significant effect of age or residence. Mean penile length was significantly different among different age groups and among pubertal stages. However, mean penile lengths of different age groups within the same pubertal stage were similar.
Penile length during puberty should be evaluated individually according to the current pubertal stage. Our study offers a reliable reference table of penile length for pubertal age group.
生殖器的发育在很大程度上受青春期过程的影响，而青春期是一种受多种因素影响导致个体差异的复杂现象。我们研究了 13 至 15 岁男孩的阴茎长度及其与青春期阶段的关系。
2011 年 6 月至 7 月，对候选军事高中的健康男孩进行了评估。记录了年龄、居住地和体重指数。测量了伸展阴茎的长度。根据 Tanner 和 Marshall 分期评估阴毛。通过使用 Prader 或chidometer 测量睾丸体积来定义生殖器青春期阶段。统计分析了阴茎长度与年龄、居住地、青春期阶段和体重指数的关系。
共有 1539 名男孩纳入研究。根据生殖器阶段的平均年龄和患者数量如下。生殖器 1 期的平均年龄为 5 岁（5 例），2 期为 13.9 岁（13 至 15 岁）（194 例），3 期为 14.07 岁（13 至 15 岁）（965 例），4 期为 14.11 岁（13 至 15 岁）（375 例）。线性回归分析显示，体重指数、生殖器阶段和阴毛阶段对阴茎长度有显著影响（p<0.001），但年龄和居住地无显著影响。不同年龄组和不同青春期阶段的平均阴茎长度存在显著差异。然而，同一青春期阶段不同年龄组的平均阴茎长度相似。
青春期的阴茎长度应根据当前的青春期阶段进行个体评估。我们的研究为青春期年龄组的阴茎长度提供了可靠的参考表。
