title: A South Indian cadaveric study on obturator neurovascular bundle with a special emphasis on high prevalence of 'venous corona mortis'.
abstract: Surgical procedures in the pelvic region are very challenging because of the complex anatomy of this region. "Corona mortis" is a term used to describe retro-pubic anastomosis between the obturator and external iliac vessels. It is considered as a key structure as significant haemorrhage may occur if the vessels are cut accidentally during pelvic surgeries. Earlier studies have documented a high frequency of venous anastomosis compared to its arterial counterpart. The objective of our study was to document the prevalence of venous corona mortis in South Indian human adult cadaveric pelvises. We conducted this study on 73 cadaveric pelvic halves. Out of the 73 hemi pelvises, 36 were normal without any variations of the obturator vessels while 37 hemi pelvises (51%) showed the presence of abnormal obturator vessels which proves to be a very high incidence in terms of variations. Out of the 37 hemi pelvises, 25 (68%) showed the presence of 2 obturator veins, out of which 1 was normal and the other was an abnormal obturator vein. 8 hemi pelvises (22%) had only abnormal obturator vein. Most of the abnormal obturator veins drained into the external iliac vein, while two veins drained into inferior epigastric veins. Venous corona mortis is said to be frequently encountered during surgery and is considered to be as important as arterial corona mortis in its clinical implications. Individual evaluation of this risky anatomical structure should be done prior to any surgical interventions.
authors.affiliation: Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal University, Manipal 576104, Karnataka, India.
authors.forename: Satheesha B
authors.initials: SB
authors.lastname: Nayak
authors.affiliation: Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal University, Manipal 576104, Karnataka, India.
authors.forename: R
authors.initials: R
authors.lastname: Deepthinath
authors.affiliation: Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal University, Manipal 576104, Karnataka, India.
authors.forename: A M
authors.initials: AM
authors.lastname: Prasad
authors.affiliation: Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal University, Manipal 576104, Karnataka, India.
authors.forename: Surekha D
authors.initials: SD
authors.lastname: Shetty
authors.affiliation: Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal University, Manipal 576104, Karnataka, India. Electronic address: ashwini.anat@gmail.com.
authors.forename: Ashwini P
authors.initials: AP
authors.lastname: Aithal
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001163:Arteriovenous Anastomosis / Q000473:pathology*; D002102:Cadaver; D019074:Epigastric Arteries / Q000002:abnormalities* / Q000033:anatomy & histology / Q000473:pathology; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000002:abnormalities* / Q000033:anatomy & histology / Q000473:pathology; D007194:India; D008297:Male; D008875:Middle Aged; D009776:Obturator Nerve / Q000002:abnormalities* / Q000033:anatomy & histology / Q000473:pathology; D015995:Prevalence; D011630:Pubic Bone / Q000033:anatomy & histology* / Q000098:blood supply; D011631:Pubic Symphysis / Q000033:anatomy & histology / Q000098:blood supply*; D013520:Urologic Surgical Procedures
keywords: Corona mortis; Obturator artery; Obturator vein; Retropubic anastomosis