anatomy laparoscopic surgeon - university of south florida - pelvic anatomy primer.pdf · effect of...
TRANSCRIPT
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Anatomy for the Laparoscopic Surgeon
Stuart Hart, MD, FACOG, FACSAssistant Professor
Division of Female Pelvic Medicine and Reconstructive SurgeryDepartment of Obstetrics and Gynecology
Director, USF Center for the Advancement of Minimally‐Invasive Pelvic Surgery (CAMPS)Medical Director, Tampa Bay Research and Innovation Center (TBRIC)
USF Health Center for Advanced Medical Learning and Simulation (CAMLS)University of South Florida Morsani College of Medicine
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Laparoscopic Anatomy
• A sound knowledge of anatomy is crucial for performing safe, efficient and effective surgery
• The gynecologic laparoscopist must develop a thorough understanding of the anatomy of the:– Anterior abdominal wall– Structural anatomy of the abdomen and pelvis– Retroperitoneal landmarks and underlying structures
– Endopelvic fascial supportive structures
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Laparoscopic Anatomy
• Structural landmarks of the anterior abdominal wall– Umbilicus– Anterior superior iliac spines– Pubic symphysis
• Vessels of the anterior abdominal wall– Inferior epigastric vessels– Superficial epigastric vessels– Superficial circumflex iliac vessels
• Layers of the anterior abdominal wall– Rectus abdominis muscle– Anterior and posterior rectus sheath– Arcuate line
Anterior Abdominal Wall
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Anterior Abdominal Wall Vessels• Inferior epigastric vessels
– Originate from the external iliac vessels before entry beneath the inguinal ligament
– Courses medial to the round ligament– Travels underneath the lateral third of the rectus abdominis muscles
– Typically not visualized by transillumination
• Superficial epigastric vessels– Courses within the subcutaneous tissue of the anterior abdominal wall
– May be visualized by transillumination– Follows a similar course to the inferior epigastric vessels
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Superficial pelvic and peritoneal structures
• Anterior abdominal wall– Median umbilical fold
• Peritoneal covering of the median umbilical ligament/urachus
– Medial umbilical folds• Peritoneal covering of the obliterated umbilical arteries• Allow laparoscopic surgeon to identify uterine artery because of origin from internal iliac artery
– Lateral umbilical folds• Peritoneal covering of the inferior epigastric vessels• Direct hernias occurs medial to the lateral umbilical fold• Indirect hernias originates lateral to the umbilical fold• Hasselbach's Triangle: Laterally: Inferior Epigastrics artery and vein
Medially: Rectus SheathInferiorly: Inguinal Ligament
Posteriorly: Transversalis Fascia
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Anterior Abdominal Wall Anatomy• Urachus
– Courses from the bladder to the umbilicus in the midline beneath the anterior abdominal wall and median umbilical fold
– Lies in the space of Retzius, between the transversalis fascia anteriorly and the peritoneum posteriorly
– Lumen normally becomes obliterated during embryonic development, thus becoming a functionless remnant
– Patent urachus is rare
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Anterior Abdominal Wall Anatomy
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Anterior Abdominal Wall Anatomy
Inferior Epigastric Vessel
Superficial Epigastic Vessel
Superficial Circumflex Iliac
Lateral Margin of Rectus Muscle
3 cm above symphysis 5.6 +/- 1.0 cm 5.5 +/- 2.0 cm 8.5 +/- 1.0 cm
5 cm above symphysis 5.2 +/- 1.2 cm 5.2 +/- 1.8 cm 9.5 +/- 1.6 cm
16 cm above symphysis 4.6 cm 4.6 +/- 1.4 cm 10.7 +/- 1.7 cm 7.6 +/- 1.5cm
Anatomic Landmark Lateral to Midline
Hurd WW. Bude RO. DeLancey JO. Newman JS. The location of abdominal wall blood vessels in relationship to abdominal landmarks apparent at laparoscopy. American Journal of Obstetrics & Gynecology. 171(3):642-6, 1994 Sep.
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Hurd WW. Bude RO. DeLancey JO. Newman JS. The location of abdominal wall blood vessels in relationship to abdominal landmarks apparent at laparoscopy. American Journal of Obstetrics & Gynecology. 171(3):642-6, 1994 Sep.
Ideal Port PlacementA: 5 cm above symphsis / 8 cm from midlineB: 3 cm above symphsis / 4 cm from midlineC: 16 cm above symphsis / 8cm from midline
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Variations in Anatomy
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Types of Umbilical Ligament insertion into Umbilical Ring
Four types of umbilical ligaments identified in 57 Korean adult cadavers
Chang-Seok,Hyung-Sun,Choon Hyuck, In-Hyuk. Morphologic Variations of the Umbilical Ring, Umbilical Ligaments and Ligamentum Teres Hepatis. Yonsei Med J 49(6):1004 - 1007, 2008
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Types of Umbilical Rings
Types of umbilical rings identified in 57 Korean adult cadaversChang-Seok,Hyung-Sun,Choon Hyuck, In-Hyuk. Morphologic Variations of the Umbilical Ring, Umbilical Ligaments and Ligamentum Teres Hepatis. Yonsei Med J 49(6):1004 - 1007, 2008
(oval or round) (obliterated or slitted) (covered by connecting band)
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Types of Umbilical Ringsen bloc cadaveric anterior abdominal wall
Types of umbilical rings identified in 57 Korean adult cadaversChang-Seok,Hyung-Sun,Choon Hyuck, In-Hyuk. Morphologic Variations of the Umbilical Ring, Umbilical Ligaments and Ligamentum Teres Hepatis. Yonsei Med J 49(6):1004 - 1007, 2008
(oval or round) (obliterated or slitted) (covered by connecting band)
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(obliterated or slitted)(covered by connecting band)
(oval or round)
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Anterior Abdominal Wall Anatomy
Effect of obesity on location of great vessels
Isaacson Keith., ed. Complications of Gynecologic Endoscopic Surgery. Philadelphia: Saunders, 2006.
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Umbilical Port Placement
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Umbilical Port Placement
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Abdominal/Pelvic CavityAnatomy
• Landmarks– Sacral promontory– Uterus– Ovaries– Ureters– Rectosigmoid– Bladder– Ureters
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Bony Pelvis•Ilium
•Ischium
•Pubis
•Ilium connected to sacrum at
sacroiliac joint
Pelvic inletAnteriorly: Pubic symphysis
Pubic tubercle
Laterally: Iliopectineal line
Linea terminalis
Posteriorly: First sacral vertebra
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Pelvic FloorMuscles:•Puborectalis
•Pubococcygeus
•Iliococcygeus
•Coccygeus
•Piriformis
Bony Landmarks:
•Pubic symphysis
•Ischial spine
•Coccyx
Ligaments
•Sacrospinous ligaments
•Sacrotuberous
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Pelvic support•Uterosacral ligaments•Cardinal ligaments•Rectovaginal fascia•Pubocervial fascia
Endopelvic fascia•Collagen fibers•Elastin•Smooth muscle
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Uterosacral Ligament Anatomy
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Ureter:•Enters pelvic cavity at the pelvic brim•Courses superficial to the common iliac artery and deep to the infundibulopelvic ligament•Travels in the medial leaf of the broad ligament
Pelvic vasculature:•Internal iliac•External iliac•Ovarian vessels
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Ureter:•Passes lateral to the uterosacral ligament and beneath the uterine artery lateral to the cervix•Travels in an endopelvic fascia tunnel medially and anteriorly along the upper part of the vagina, and enters into the bladder wall and then opens into the trigone
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Course of Ureter
Protecting the ureter during pelvic surgery
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Abnormal Course of Ureter
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Pelvic vasculatureHypogastric artery
Anterior branch• Obturator artery• Inferior gluteal artery• Umbilical artery• Uterine artery• Vaginal artery• Superior vesical artery• Inferior vesical artery• Middle rectal artery• Internal pudendal artery• Obliterated umbilical
Posterior branch• Iliolumbar artery• Lateral sacral arteries• Superior gluteal artery
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Side‐wall Anatomy
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Retroperitoneal Anatomy
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Sacral Anatomy
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Hypogastric artery
Anterior branch• Obturator artery• Inferior gluteal artery• Umbilical artery• Uterine artery• Vaginal artery• Inferior vesical artery• Middle rectal artery• Internal pudendal artery
Internal pudendal branches• Inferior rectal artery• Perineal artery• Posterior labial arteries• Dorsal artery of clitoris• Deep artery of clitoris• Artery of bulb of vestibule
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Laparoscopic Anatomy
• A sound knowledge of anatomy is crucial for performing safe, efficient and effective surgery
• This understanding will keep the Gynecologic surgery operating in a safe manner and reduce complications
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References
• Netter Atlas of Human Anatomy• Baggish M, Karram M. Atlas of Pelvic Anatomy and Gynecologic Surgery. 2nd edition. Philadelphia: Saunders, 2006
• Isaacson K. Complications of Gynecologic Endoscopic Surgery. Philadelphia: Saunders, 2006.