Rigi10™ Malleable Penile Prosthesis
Also Known As
Central tendon of the perineum
Definition
The perineal body, also known as the central tendon of the perineum, is a pyramidal or irregularly shaped fibromuscular structure located in the midline of the perineum, between the vaginal opening (in females) or the root of the penis (in males) anteriorly, and the anus posteriorly.¹ It is a complex structure composed of collagenous and elastic fibers, as well as interlacing skeletal and smooth muscle fibers derived from several muscles that converge and attach to it.¹ These muscles include the bulbospongiosus muscle, the external anal sphincter, the superficial and deep transverse perineal muscles, and contributions from the levator ani (pelvic diaphragm) and the muscular coat of the rectum.¹ The perineal body lies deep to the skin and superficial fascia. Its primary purpose is to provide structural support to the pelvic floor, anchoring pelvic organs and playing a crucial role in maintaining the integrity of the pelvic outlet, particularly in females. It also contributes to functions such as fecal and urinary continence and supports the posterior vaginal wall.¹ (Further details on clinical significance from other sources to be integrated if accessible).
Clinical Context
The perineal body is of significant clinical importance, particularly in obstetrics, gynecology, urology, and colorectal surgery. Its integrity is crucial for maintaining pelvic floor support and function.¹ Damage to the perineal body, most commonly occurring during vaginal childbirth (perineal tears or episiotomy), can lead to various pelvic floor disorders.² These may include pelvic organ prolapse (e.g., cystocele, rectocele), urinary incontinence, fecal incontinence, and sexual dysfunction. The extent of perineal body injury during delivery is a key factor in postpartum morbidity. Therefore, careful management during childbirth, including techniques to minimize trauma and appropriate repair of any injuries (perineorrhaphy), is essential. In some cases of severe damage or chronic pelvic floor weakness, surgical reconstruction of the perineal body may be necessary to restore support and function. Urologically, its role in supporting the external urethral sphincter contributes to urinary continence mechanisms. In proctology, its relationship with the anal sphincter complex is vital for fecal continence.¹ (Further specific details on patient selection for procedures, surgical techniques, and expected outcomes would ideally be drawn from sources like StatPearls, which are currently inaccessible due to browser issues.)