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Topic: Sciatic nerve

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	Sciatica \| Sciatic Nerve \| Pinched Nerve \| Sciatic Nerve Pain \| Siatica
		The sciatic nerve (commonly misspelled cyatic nerve or siatic nerve) is the largest nerve in your body, which starts in the low back and travels all the way down your legs to the bottom of your feet.
		Frequently sciatic nerve pain is a result of the joints in your lower spine being misaligned and putting pressure or stretching on the nerve roots as they come off from your spine.
		Chiropractic care is efficient at correcting misalignment in the spine and thereby reducing the pinched nerve commonly associated with sciatic nerve damage.
	www.wisdomandhealth.com /sciatica.html (0 words)

	Dr. Koop - Sciatic Pain- Health Encyclopedia and Reference
		Sciatica is the inflammation of the sciatic nerve, usually marked by pain and tenderness along the course of the nerve on through to the thigh and leg.
		Sciatic pain usually starts in the buttocks and extends down the rear of the thigh and lower leg to the sole of the foot and along the outer side of the lower leg to the top of the foot.
		Several nerve roots leave the spinal cord and exit through holes in the sacrum to combine and form the sciatic nerve, which then passes between layers of the buttock muscles into the deep muscles of the back of the thigh.
	www.drkoop.com /encyclopedia/93/172.html (846 words)

	MedlinePlus Medical Encyclopedia: Sciatica
		It is caused by injury to or compression of the sciatic nerve.
		Incomplete damage to the sciatic nerve may appear identical to damage to one of the branches of the sciatic nerve (tibial nerve dysfunction or common peroneal nerve dysfunction).
		The sciatic nerve may also be harmed by pressure from masses such as a tumor or abscess, or by bleeding in the pelvis.
	www.nlm.nih.gov /medlineplus/ency/article/000686.htm (0 words)

	New York School Of Regional Anesthesia - Sciatic Nerve Block: Posterior Approach
		On its medial side, the sciatic nerve is accompanied by the posterior cutaneous nerve of the thigh and the inferior gluteal artery.
		The muscular branches of the sciatic nerve are distributed to the biceps femoris, semitrendinosus, semimembranosus, and to the ischial head of the adductor magnus; the branches of the latter two arise by a common trunk.
		Sciatic nerve blockade results in anesthesia of the skin of the posterior aspect of the thigh, hamstrings and biceps muscles, part of hip and knee joint, and entire leg below the knee, with the exception of the skin of the medial aspect of the lower leg.
	www.nysora.com /techniques/sciatic_nerve_block_posterior (2620 words)

	Sciatica and the Sciatic Nerve (ciatic nerve) - Spine-health.com
		Sciatica commonly refers to pain that radiates along the sciatic nerve and is typically felt in the rear, down the back of the leg and possibly to the foot.
		The sciatic nerve is the largest single nerve in the human body; it runs from each side of the lower spine through deep in the rear and back of the thigh, and all the way down to foot, connecting the spinal cord with the leg and foot muscles.
		The nerve that exits between lumbar segment 4 and lumbar segment 5 (L4 and L5) is called the L4 nerve root, and the nerve that exits between the L5 and Sacral segment 1 is called the L5.
	www.spine-health.com /topics/cd/sciatica/sciatic_nerve01.html (0 words)

	Causes of Sciatica Pain and Sciatica Symptoms with Info On Sciatic Nerve Involvement
		This symptom pattern tends to lead to the question of whether the whole sciatic nerve is being pinched somewhere along its course from the sacrum to the knee rather than one of the spinal nerves that leads into it.
		One place where the entire sciatic nerve is pinched most commonly is in the pelvis, where the nerve exits from the inside to the outside of the pelvis through the sciatic notch and passes under a muscle called the piriformis muscle.
		Aside from sciatic nerve problems, entrapments of the tibial nerve at the ankle or tarsal tunnel syndrome, or entrapment of the peroneal nerve near the knee at the head of the fibula bone are common.
	www.backpain-guide.com /Chapter_Fig_folders/Ch07_Symptoms_Folder/Sciatica.html (1219 words)

	Discovery Health :: Diseases & Conditions :: sciatic nerve dysfunction
		Sciatic nerve dysfunction is a condition in which the sciatic nerve conducts impulses abnormally.
		The sciatic nerve is the main nerve of the leg.
		The sciatic nerve runs through the leg and is the largest nerve in the body.
	health.discovery.com /encyclopedias/illnesses.html?article=1856&page=1 (522 words)

	Eliminate Sciatic Nerve Pain Now
		The sciatic nerve is a large bundle of nerve fibres which exits the spinal canal at the lower back and is responsible for controlling and providing sensory function to the muscles in your buttocks, back of your leg, top of the foot and into the big toe.
		When the sciatic nerve is pinched, inflamed, or damaged, you may feel pain anywhere along the path of the nerve, however most sufferers complain of pain in the buttock, and the hip as these are the largest of the muscles to spasm.
		The surgical procedures for sciatic nerve pain are a microdiscectomy or lumbar laminectomy and discectomy.
	www.backpain-resources-online.com /sciatic-nerve.html (0 words)

	Sciatic Nerve Neuralgia and Piriformis Muscle Syndrome Massage Table News \| Stronglite
		Sciatic nerve neuralgia is considered to be one of the most difficult abnormalities of the support and movement system.
		Clinical expressions of sciatic nerve neuralgia include sharp pain irradiating to the lower extremities which increases during any of the patient’s attempts to move and of course limited range of motion on all axes and planes.
		Sciatica nerve neuralgia can be the result of compression of the S1 spinal nerve as well as due to the compression of the sciatic nerve by over-tensed piriformis muscles.
	www.stronglite.com /home/sl1/page_316_11/sciatic_nerve_neuralgia_and__piriformis_muscle_syn.html (604 words)

	Sciatica: What You Need to Know About Sciatica - Spine-health.com
		True sciatica occurs when the sciatic nerve is pinched or irritated and the pain along the sciatic nerve is caused by this nerve (radicular pain) and is called a radiculopathy.
		Sciatica nerve pain is caused by a combination of pressure and inflammation on the nerve root, and treatment is centered on relieving both of these factors.
		Sciatica surgery, such as microdiscectomy or lumbar laminectomy and discectomy, to remove the portion of the disc that is irritating the nerve root.
	www.spine-health.com /topics/cd/d_sciatica/sc01.html (0 words)

	Sciatic Nerve - Wheeless' Textbook of Orthopaedics
		- in 10% of patients, the sciatic nerve is separated in greater sciatic foramen by all or part of the piriformis;
		Sciatic nerve palsy after total hip arthroplasty: treatment by modular neck shortening.
		Contributory factors and etiology of sciatic nerve palsy in total hip arthroplasty.
	www.wheelessonline.com /ortho/sciatic_nerve (0 words)

	Sciatica and Sciatic Nerve pain
		When people commonly refer to sciatica it is not necessarily a problem of the sciatic nerve, it's a problem of the nerve when it is being pinched as it exits from the spine from a herniated disc or a bone spur.
		The sciatic nerve is commonly injured by fractures of the pelvis or other trauma to the buttocks or thigh.
		The sciatic nerve may also be harmed by pressure from masses such as a tumor or abcess, or by bleeding in the pelvis.
	www.laserspineinstitute.com /back_problems/sciatica_sciatic_nerve_pain (0 words)

	Sciatic Nerve and Sciatica
		Boca Raton, FL The sciatic nerve is the longest and largest nerve in the body measuring three-quarters of an inch in diameter.
		The sciatic nerve and its nerve branches enable movement and feeling (motor and sensory functions) in the thigh, knee, calf, ankle, foot and toes.
		If the nerve is compressed, caused by conditions such as a bulging or herniated disc or tumor (rare), symptoms may include a loss of reflexes, weakness and numbness besides severe pain.
	www.spineuniverse.com /displayarticle.php/article2524.html (0 words)

	Sciatica
		It is formed by the spinal nerves of L-4 through S-3, branches through holes in the sacrum, forms one large nerve, travels under and sometimes through the piriformis muscle then travels down the back of the thigh.
		Now that you see how large and involved the sciatic nerve is with the piriformis muscle, it is easier to understand how the piriformis muscle, which attaches to the front of the sacrum, if too tight on one side can cause the "symptom" referred to as sciatica or "pain in the butt".
		Formed by the spinal nerves of vertebrae L-4 through S-3, the sciatic nerve is the longest nerve in the human body.
	www.sacrowedgy.com /sciatica.htm (653 words)

	sciatic nerve (great sciatic nerve)
		Increased nerve growth factor level in the distal stump of transected sciatic nerve in relation to aging and its application for neural grafting.
		Neonatal sciatic nerve section results in thiamine monophosphate but not substance P or calcitonin gene-related peptide depletion from the terminal field in the dorsal horn of the rat: the role of collateral sprouting.
		Altered protein synthesis in sciatic nerve by transgenic overexpression of PMP22 in the CMT rat.
	www.arclab.org /node_pages/1176.html (1630 words)

	New York School Of Regional Anesthesia - Sciatic Nerve Block (Anterior Approach)
		The course of the nerve can be estimated by drawing a line on the back of the thigh beginning from the apex of the popliteal fossa to the midpoint of the line joining the ischial tuberosity to the apex of the greater trochanter.
		The muscular branches of the sciatic nerve are distributed to the biceps femoris, semitendinosus, semimembranosus, and to the ischial head of the adductor magnus; the branches of the latter two arise by a common trunk.
		Because branches to the hamstrings muscle may depart the main trunk of the sciatic nerve at the level of needle insertion, twitches of the hamstrings should not be accepted as a reliable sign of sciatic nerve localization.
	www.nysora.com /techniques/sciatic_nerve_block_anterior (2517 words)

	Piriformis Syndrome: Part I
		the piriformis arises from the anterior sacrum between the second to fourth anterior sacral foramina, from the margin of the greater sciatic foramen and from the anterior surface of the sacrotuberous ligament, the anterior sacrospinous ligament and the capsule of the sacroiliac joint.
		He concluded that when the nerve passed between the tendinous portion of the piriformis the nerve would more likely be pinched during passive medial rotation of the thigh which stretches the piriformis, causing the nerve to be pressed against the extended piriformis.
		felt that before the piriformis could aggravate the sciatic nerve there first had to be a preexisting tension on the sciatic nerve by scarring or arachnoiditis around the nerve roots secondary to laminectomy or some space-occupying lesion such as osteoarthritic spurs.
	www.chiroweb.com /archives/print_friendly.php?volume=09&issue=13&issue_date=June%2021%2C%201991&pr_file_name=http%3A%2F%2Fwww.chiroweb.com%2Farchives%2F09%2F13%2F28.html (1111 words)

	What is the Sciatic Nerve?
		The sciatic nerve is the longest and thickest nerve in the human body, measuring just under an inch in width, comparative to the diameter of a finger.
		The sciatic nerve is the major nerve supplier to the legs, and it branches out to provides movement and feeling to the hip, thigh, knee, calf, ankle, foot and toes.
		The sciatic nerve, in spite of its length and size, normally behaves like all other nerves; it transmits signals to and from the muscles and the brain.
	www.wisegeek.com /what-is-the-sciatic-nerve.htm (451 words)

	Abstract Publication PO-RR-83-TH - PT 2005 June 08, 2005 June 11, 2005
		The sciatic nerve exited inferior to the Piriformis in all 21 specimens (100%).
		Division of the nerve occurred: 1.) at the popliteal fossa in 7 of 21 specimens (33%), 2.) at the mid thigh in 5 of 21 specimens (24%), and 3.) proximal to the popliteal fossa in 2 of 21 specimens (10%).
		The posterior cutaneous nerve of the thigh was observed in 14 of 21 specimens (67%).
	www.apta.org /AM/abstracts/pt2005/abstractsPt.cfm?pubNo=PO-RR-83-TH (590 words)

	eMedicine - Piriformis Syndrome : Article by Shishir Shah
		The sciatic nerve exits the pelvis via 4 routes: (1) The nerve passes anteriorly to the piriformis between the rims of the greater sciatic foramen.
		Entrapment of the sciatic nerve at the sciatic trunk (where it leaves the pelvis and crosses the greater sciatic notch) is an infrequent cause.
		Lasègue sign: Pain is present in the vicinity of the greater sciatic notch during extension of the knee with the hip flexed to 90°, tenderness to palpation of the greater sciatic notch is noted.
	www.emedicine.com /sports/topic102.htm (3592 words)

	TomsBack.com - Sciatic Nerve
		The Sciatic nerve is the largest and longest nerve in the body.
		The nerve originates in the lower part of the spinal cord, the so-called lumbar region.
		Most cases of sciatic nerve pain is treatable with pain medication and physical therapy.
	www.trickstar.co.nz /tomsback/sciaticnerve.html (443 words)

	Sciatic Nerve. Adverse Effects. Fluorinated & Fluoride Pesticides. Fluoride Action Network Pesticide Project.
		The sciatic nerve is the largest nerve in the human body, about the diameter of a finger.
		Sciatic nerve fibers begin at the 4th and 5th lumbar vertebra (L4, L5) and the first few segments of the sacrum.
		Nerve fiber degeneration was present in the majority of the hens.
	www.fluoridealert.org /pesticides/effects.sciatic.nerve.htm (2203 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		There were diagnoses of atrophy of the left forearm, wrist and hands; frozen left forearm including the wrist and hand; right footdrop due to sciatic nerve injury; peripheral nerve deficits, left pretibial; hyperesthesia of the left tibia, and shortening of the left forearm.
		Severe incomplete paralysis of the sciatic nerve with marked muscular atrophy is assigned a 60 percent evaluation.
		The evidence of record clearly reveals that the veteran sustained partial paralysis of the sciatic nerve during service as a result of a perforating gunshot wound of the right thigh and underwent an operative procedure during service for the disorder.
	www.va.gov /vetapp/files1/9405188.txt (4930 words)

	Sciatic Nerve Tumor - EMG and MRI used to diagnose sciatic nerve tumor in tw...
		Sciatic Nerve Tumor - EMG and MRI used to diagnose sciatic nerve tumor in tw...
		According to a study from Australia, "Sciatic nerve tumor was diagnosed in a Staffordshire Bull Terrier cross-bred and a Bichon Frise, both presenting with chronic left hind limb lameness.
		Abraham and coauthors concluded: "A sciatic nerve tumor was...
	www.newsrx.com /newsletters/Cancer-Weekly/2003-04-22/042220033337CW.html (189 words)

	The Sciatic Nerve
		The sciatic nerve is a large nerve that originates from the distal spinal cord and extends along nearly the entire length of the hind limb.
		As is the case with many of the large nerves of the vertebrate nervous system, the sciatic nerve is a mixed-function nerve, meaning it is made up of the axons of sensory and motor neurons.
		As with other nerves in the vertebrate body, the sciatic nerve is comprised of the axons of hundreds of neurons.
	www.unm.edu /~toolson/sciatic_nerve.html (673 words)

	Sciatic Nerve Pain during Pregnancy : American Pregnancy Association
		The sciatic nerve is the largest nerve in the body, providing sensory and motor function to the lower extremities.
		Sciatic nerve pain is a periodic severe pain that occurs throughout your legs.
		The cause of sciatic nerve pain is thought to be associated with pressure on the nerve caused by the developing baby.
	www.americanpregnancy.org /pregnancyhealth/sciaticnervepain.html (313 words)

	Sciatic Nerve Pain
		Sciatic nerve pain, or sciatica, is a form of nerve damage.
		The sciatic nerve controls the muscles in the buttocks and runs down through the back of the knee and the lower leg.
		This nerve also provides sensation in the back of the thigh, the lower leg and the sole of your foot.
	www.energycenter.com /x_sciatic-nerve-pain.html (345 words)

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