Citation, DOI and article data
The perineal body, also known as the central tendon of the perineum, (TA: corpus perineale) is a key midline fibromuscular structure, with important muscular attachments, which acts to stabilize the structures of the pelvis and perineum. It is located between the anal canal and the bulb of the penis, or, in females, the vagina.
The perineal body has a trilaminar structure 2:
- superficial layer
- intermediate layer
- deep layer
In young women the perineal body is approximately twice the size of the perineal body in men 5.
- anatomic relations same as in females, except that anteriorly lies the urethra instead of the vagina
In general the perineal body is much easier to visualize in women than men due to its much larger size.
The perineal body is clearly visible on transperineal ultrasound in healthy women 3.
The perineal body can be easily identified on thin slice MRI in healthy women and its internal structure is appreciable on optimized sequences 4.
Injury to it during childbirth may weaken the pelvic floor and contribute to prolapse of the vagina and uterus.
- 1. Chummy S. Sinnatamby. Last's Anatomy. (2020) ISBN: 9780702033957
- 2. Shafik A, Sibai OE, Shafik AA, Shafik IA. A novel concept for the surgical anatomy of the perineal body. (2007) Diseases of the colon and rectum. 50 (12): 2120-5. doi:10.1007/s10350-007-9064-8 - Pubmed
- 3. Asfour V, Digesu GA, Fernando R, Khullar V. Ultrasound imaging of the perineal body: a useful clinical tool. (2020) International urogynecology journal. 31 (6): 1197-1202. doi:10.1007/s00192-019-04166-7 - Pubmed
- 4. Larson KA, Yousuf A, Lewicky-Gaupp C, Fenner DE, DeLancey JO. Perineal body anatomy in living women: 3-dimensional analysis using thin-slice magnetic resonance imaging. (2010) American journal of obstetrics and gynecology. 203 (5): 494.e15-21. doi:10.1016/j.ajog.2010.06.008 - Pubmed
- 5. Wu Y, Hikspoors JPJM, Mommen G, Dabhoiwala NF, Hu X, Tan LW, Zhang SX, Lamers WH. Interactive three-dimensional teaching models of the female and male pelvic floor. (2020) Clinical anatomy (New York, N.Y.). 33 (2): 275-285. doi:10.1002/ca.23508 - Pubmed