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An obturator hernia is a type of hernia involving an intrusion into the obturator canal. The obturator nerve can be compressed in the obturator canal. [2] The obturator canal may be compressed during pregnancy and major traumatic injuries, causing obturator syndrome. [3]
The obturator foramen is the large, [citation needed] bilaterally paired opening of the bony pelvis.It is formed by the pubis and ischium.It is mostly closed by the obturator membrane except for a small opening, the obturator canal, through which the obturator nerve and vessels pass.
People with lean body builds are also more likely to develop an obturator hernia due to having less adipose and lymphatic tissue surrounding the obturator canal. [2] Nerves and blood vessels that pass through the obturator canal are covered and protected by adipose tissue. When a person experiences significant weight loss due to malnutrition or ...
Here it enters the thigh, through the obturator canal, and divides into an anterior and a posterior branch, which are separated at first by some of the fibers of the obturator externus, and lower down by the adductor brevis. [2] An accessory obturator nerve may be present in approximately 8% to 29% of the general population. [3]
The internal obturator muscle or obturator internus muscle originates on the medial surface of the obturator membrane, the ischium near the membrane, and the rim of the pubis. It exits the pelvic cavity through the lesser sciatic foramen. The internal obturator is situated partly within the lesser pelvis, and partly at the back of the hip-joint.
The internal pudendal vessels and pudendal nerve cross the pelvic surface of the internal obturator and are enclosed in a special canal—Alcock's canal—formed by the obturator fascia. The iliococcygeus portion of the levator ani attaches to the lateral walls of the pelvis via the obturator fascia through the tendinous arch of the obturator ...
The obturator membrane is a thin fibrous sheet, which almost completely closes the obturator foramen.. Its fibers are arranged in interlacing bundles mainly transverse in direction; the uppermost bundle is attached to the obturator tubercles and completes the obturator canal for the passage of the obturator vessels and nerve.
The obturator artery is a branch of the internal iliac artery that passes antero-inferiorly (forwards and downwards) on the lateral wall of the pelvis, to the upper part of the obturator foramen, and, escaping from the pelvic cavity through the obturator canal, it divides into an anterior branch and a posterior branch.