Superficial Perineal Space

A. The boundaries of the superficial perineal space are the inferior fascia of the urogenital diaphragm (perineal membrane) and the superficial perineal fascia, which is continuous with Colles fascia.

B. Table 17-2 shows the anatomic structures found within the superficial perineal space in males and females.

Perineal Fascia Female

Figure 17-1. (A) The male perineum, showing the diamond shape, extending from the pubic symphysis to the coccyx. A transverse line joining the anterior ends of the ischial tuberosities divides the perineum into two unequal triangles, the urogenital triangle anteriorly and the anal triangle posteriorly. The midpoint of the transverse line indicates the site of the perineal body (central perineal tendon). (B) The female perineum in the lithotomy position, with incision lines shown for median and mediolateral episiotomies. (A reprinted with permission from Moore KL: Clinically Oriented Anatomy 3rd ed. Baltimore, Williams & Wilkins, 1992, p 297; B adapted with permission from Moore KL, Dalley AF II: Clinically Oriented Anatomy, 4th ed. Baltimore, Lippincott Williams & Wilkins, 1999, p.389.)

Figure 17-1. (A) The male perineum, showing the diamond shape, extending from the pubic symphysis to the coccyx. A transverse line joining the anterior ends of the ischial tuberosities divides the perineum into two unequal triangles, the urogenital triangle anteriorly and the anal triangle posteriorly. The midpoint of the transverse line indicates the site of the perineal body (central perineal tendon). (B) The female perineum in the lithotomy position, with incision lines shown for median and mediolateral episiotomies. (A reprinted with permission from Moore KL: Clinically Oriented Anatomy 3rd ed. Baltimore, Williams & Wilkins, 1992, p 297; B adapted with permission from Moore KL, Dalley AF II: Clinically Oriented Anatomy, 4th ed. Baltimore, Lippincott Williams & Wilkins, 1999, p.389.)

Table 17-1.

Structures Within the Deep Perineal Space

Table 17-1.

Structures Within the Deep Perineal Space

Male

Female

Membranous urethra

Urethra

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