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Also known as
Pectineal ligament, Inguinal ligament of Cooper, Ligamentum pectineum (Latin)
Definition
Cooper’s Ligament, also known as the pectineal ligament, is a strong fibrous band that runs along the superior pubic ramus of the pelvis.1 First described by Sir Astley Cooper in 1804, it represents a thickening of the periosteum overlying the pectineal line (pecten pubis).2 The ligament is formed from fibers of the lacunar ligament, periosteum along the superior pubic ramus, and aponeurotic fibers from the internal oblique muscle, transversus abdominis muscle, and pectineus muscle.3
Anatomically, Cooper’s Ligament attaches medially to the pubic tubercle, where it meets the inguinal ligament and the lacunar ligament, and extends laterally along the pecten pubis, gradually becoming thinner along its course.4 It forms the posterior border of the femoral canal and has close proximity to important vascular structures, including the external iliac vessels superolaterally and the obturator vessels inferolaterally.5 The medial part of the ligament close to the pubic tubercle is the thickest section, providing robust structural support.6
In pelvic reconstructive surgeries, Cooper’s Ligament serves as a critical anchoring point due to its exceptional strength and stability. It provides secure fixation for mesh implants and sutures in procedures addressing pelvic organ prolapse and stress urinary incontinence.7 Its biomechanical properties make it an ideal structure for supporting reconstructed pelvic anatomy, effectively controlling excessive mobility of the pelvic floor.8
Clinical Context
Cooper’s Ligament plays a crucial role in various pelvic reconstructive surgical procedures, particularly those addressing pelvic organ prolapse (POP) and stress urinary incontinence (SUI).1 Its exceptional strength and strategic anatomical position make it an ideal anchoring structure for surgical repairs in the pelvic region.
In the treatment of stress urinary incontinence, Cooper’s ligament urethrovesical suspension (also known as the Burch colposuspension) involves placing sutures on either side of the urethra and attaching them to Cooper’s ligament.2 This procedure, first used in 1958, provides support to the urethra and helps prevent incontinence by restoring the normal anatomical position of the bladder neck and proximal urethra.3 The technique has demonstrated long-term success rates of 74-98% in clinical studies.4
For pelvic organ prolapse, Cooper’s ligament serves as a secure fixation point in procedures such as paravaginal repair and pectopexy.5 In 1949, it was first used to support prolapse of the vaginal vault, demonstrating the versatility of this anatomical structure in pelvic floor reconstruction.6 Modern techniques often involve attaching synthetic mesh to Cooper’s ligament to provide tension-free support to prolapsed organs.7 The Cooper ligament suspension effectively repairs vaginal vault prolapse and anal levator fissure, controlling excessive mobility of the pelvic floor.8
During laparoscopic or open surgical approaches, careful identification of Cooper’s ligament is essential, as it has close proximity to important vascular structures.9 The external iliac vein is particularly close, measured at approximately 1.04±0.23 cm from the midpoint of the left pectineal ligament and 1.25±0.43 cm from the midpoint of the right pectineal ligament in cadaveric studies.10 Surgeons must exercise caution to avoid vascular injury during procedures involving this ligament.
Patient selection for procedures utilizing Cooper’s ligament includes those with genuine stress incontinence with urethral hypermobility, significant pelvic organ prolapse, or recurrent prolapse after previous repairs.11 These techniques are particularly valuable for sexually active patients due to the preservation of normal vaginal axis and depth.12
Recovery following procedures involving Cooper’s ligament typically involves catheterization for 24-48 hours, gradual return to normal activities over 4-6 weeks, and avoidance of heavy lifting for approximately 3 months.13 Success rates are generally high, with studies reporting objective cure rates of 85-90% for stress incontinence and similar success rates for prolapse repair.14