Colles’ fascia is the superficial perineal fascia anchoring to the ischiopubic rami.
Colles' fascia is the membranous layer of the superficial perineal fascia. It lies deep to the fatty layer (Camper’s fascia) and superficial to the superficial perineal muscles. It is continuous with other membranous fasciae of the body, including Scarpa’s fascia of the abdominal wall and Dartos fascia of the scrotum or labia. Colles’ fascia plays an important role in compartmentalizing the perineal region and preventing the spread of infections or fluids between adjacent areas.
Colles’ fascia is a tough, fibrous, membranous layer made of dense connective tissue. It forms the floor of the superficial perineal pouch, enclosing the superficial perineal muscles and erectile bodies. It is firmly attached to surrounding fascial and bony landmarks, which help define the boundaries of the superficial perineal space.
Colles’ fascia is located in the perineum within the urogenital triangle, deep to Camper’s fascia and superficial to the perineal membrane and muscles. It forms the inferior boundary of the superficial perineal pouch.
Direction | Adjacent Structure |
---|---|
Superficial | Camper’s fascia (fatty layer of superficial fascia) |
Deep | Superficial perineal muscles (e.g., bulbospongiosus, ischiocavernosus) |
Anterior | Scarpa’s fascia and Dartos fascia |
Posterior | Perineal membrane (fused edge) |