In plain words
The perineal body is a dense knot of muscle and connective tissue in the space between the vagina and the anus. Several meet here, and it helps support the pelvic floor. During birth it stretches a great deal, and a tear often reaches into it. Healing of the perineal body is part of recovery after a vaginal birth. Many mothers feel tenderness here for weeks. Some notice changes in sensation or in how the pelvic floor feels. If you have pain, bulging, or trouble with bowel movements, tell your provider. Knowing where this area is can help you describe what you feel.
The deeper version
The perineal body is a fibromuscular mass where the bulbospongiosus, the superficial and deep transverse perineal muscles, and the anterior fibers of the converge, continuous with the levator ani above (Standring, Gray's Anatomy, 42nd edition, 2020). It is a common site of third- and fourth-degree laceration and is central to perineal support. Its disruption during birth has been associated with later pelvic floor dysfunction, including altered sensation and risk, though causal relationships are debated and studies vary in design. Repair technique, including reapproximation of the perineal body in layers, is part of obstetric practice and is described in ACOG and RCOG guidance on lacerations.
Where it comes up
- Healing a tear or stitchesPostpartum: Your Body
- Perineal massage, tearing, and episiotomyGetting Ready for Birth
- Your pelvic floor after birthPostpartum: Your Body
- Prolapse: heaviness, bulging, and what helpsPostpartum: Your Body
- Pushing and positions for birthGetting Ready for Birth
What mothers here say about perineal body
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Sources
- Standring S (editor) — Gray's Anatomy: The Anatomical Basis of Clinical Practice, 42nd edition (2020)
- American College of Obstetricians and Gynecologists — Practice Bulletin No. 198: Prevention and Management of Obstetric Lacerations at Vaginal Delivery (2018)