Anatomy
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paininbutt
- Posts: 5
- Joined: Mon Sep 05, 2011 2:42 am
Anatomy
I had an mri done of my PN with Dr Potter. The MRI states varices extending into the anteriorinferior margin of Alcocks Canal. When my doctor did the exam he said the most painful part for me with near the SS ligament, are these at all close??
Re: Anatomy
According to Shafik, the pudendal canal is on average only 1.6 cm long and begins about 1.6 cm away from the ischial spine where the SS ligament attaches. So if your MRI says you have varices at the posterior inferior end of alcock's that could be as far as 3.2 cm from the SS ligament. Am I reading this right? I always thought the canal was several cm. long.
http://www.ncbi.nlm.nih.gov/pubmed/9926755
Am Surg. 1999 Feb;65(2):176-80.
Pudendal canal: surgical anatomy and clinical implications.
Shafik A, Doss SH.
Department of Surgery, Faculty of Medicine, Cairo University, Egypt.
Abstract
The anatomy of the pudendal canal (PC) was studied in 26 cadavers: 10 stillborn and 16 adults (mean age, 48.2 years). Two approaches were used to expose the PC: gluteal and perineal. The PC was an obliquely lying tube with a mean length of 0.8 cm in the stillborn and 1.6 cm in the adult cadavers. It started at a mean distance of 0.8 cm from the ischial spine in the stillborn and of 1.6 cm in the adult cadavers, and ended at a mean distance of 0.7 cm and 2.6 cm, respectively, from the lower border of the symphysis pubis. The PC wall was formed by the splitting of the obturator fascia and not by the lunate fascia. The PC contained the pudendal nerve and vessels embedded in loose areolar tissue. The three branches of the neurovascular bundle arose inside the canal in all but three cadavers. The wall of the PC consisted of collagen and elastic fibers, whereas that of the obturator fascia consisted of collagen only. The PC seems to be structurally adapted to serve certain functions. The criss-cross textile arrangement of collagen fibers in its wall allows the canal to change its shape in response to changes in pudendal vessels that occur during sexual activity. The elastic recoil may not only help to "pump" the blood up the pudendal vein, but also to prevent PC subluxation. The PC may, furthermore, act as a "pulley" for the neurovascular bundle. The pulley action may be disrupted by disordered pelvic floor muscles or defecation. Knowledge of the precise anatomy of the PC is necessary to carry out PC decompression in the treatment of PC syndrome.
PMID:
9926755
[PubMed - indexed for MEDLINE]
http://www.ncbi.nlm.nih.gov/pubmed/9926755
Am Surg. 1999 Feb;65(2):176-80.
Pudendal canal: surgical anatomy and clinical implications.
Shafik A, Doss SH.
Department of Surgery, Faculty of Medicine, Cairo University, Egypt.
Abstract
The anatomy of the pudendal canal (PC) was studied in 26 cadavers: 10 stillborn and 16 adults (mean age, 48.2 years). Two approaches were used to expose the PC: gluteal and perineal. The PC was an obliquely lying tube with a mean length of 0.8 cm in the stillborn and 1.6 cm in the adult cadavers. It started at a mean distance of 0.8 cm from the ischial spine in the stillborn and of 1.6 cm in the adult cadavers, and ended at a mean distance of 0.7 cm and 2.6 cm, respectively, from the lower border of the symphysis pubis. The PC wall was formed by the splitting of the obturator fascia and not by the lunate fascia. The PC contained the pudendal nerve and vessels embedded in loose areolar tissue. The three branches of the neurovascular bundle arose inside the canal in all but three cadavers. The wall of the PC consisted of collagen and elastic fibers, whereas that of the obturator fascia consisted of collagen only. The PC seems to be structurally adapted to serve certain functions. The criss-cross textile arrangement of collagen fibers in its wall allows the canal to change its shape in response to changes in pudendal vessels that occur during sexual activity. The elastic recoil may not only help to "pump" the blood up the pudendal vein, but also to prevent PC subluxation. The PC may, furthermore, act as a "pulley" for the neurovascular bundle. The pulley action may be disrupted by disordered pelvic floor muscles or defecation. Knowledge of the precise anatomy of the PC is necessary to carry out PC decompression in the treatment of PC syndrome.
PMID:
9926755
[PubMed - indexed for MEDLINE]
PNE since 2002. Started from weightlifting. PNE surgery from Dr. Bautrant, Oct 2004. Pain now is usually a 0 and I can sit for hours on certain chairs. No longer take medication for PNE. Can work full time and do "The Firm" exercise program. 99% cured from PGAD. PNE surgery was right for me but it might not be for you. Do your research.
Re: Anatomy
This is really interesting, I have been wondering myself how long Alcock's canal actually is. This is all such a tiny area in reality.