Macroanatomical Structure of the Lumbosacral Plexus and its Branches in the Indigenous Duck

2018 ◽  
Vol 52 (1-4) ◽  
pp. 1-9 ◽  
Author(s):  
MT Hussan ◽  
MS Islam ◽  
J Alam
Keyword(s):  
Hind Limb ◽  
Femoral Nerve ◽  
Morphological Structure ◽  
Spinal Nerve ◽  
The Body ◽  
Lumbar Plexus ◽  
Lumbosacral Plexus ◽  
Sacral Plexus ◽  
Spinal Nerves ◽  
Femoral Cutaneous Nerve

The present study was carried out to determine the morphological structure and the branches of the lumbosacral plexus in the indigenous duck (Anas platyrhynchos domesticus). Six mature indigenous ducks were used in this study. After administering an anesthetic to the birds, the body cavities were opened. The nerves of the lumbosacral plexus were dissected separately and photographed. The lumbosacral plexus consisted of lumbar and sacral plexus innervated to the hind limb. The lumbar plexus was formed by the union of three roots of spinal nerves that included last two and first sacral spinal nerve. Among three roots, second (middle) root was the highest in diameter and the last root was least in diameter. We noticed five branches of the lumbar plexus which included obturator, cutaneous femoral, saphenus, cranial coxal, and the femoral nerve. The six roots of spinal nerves, which contributed to form three trunks, formed the sacral plexus of duck. The three trunks united medial to the acetabular foramen and formed a compact, cylindrical bundle, the ischiatic nerve. The principal branches of the sacral plexus were the tibial and fibular nerves that together made up the ischiatic nerve. Other branches were the caudal coxal nerve, the caudal femoral cutaneous nerve and the muscular branches. This study was the first work on the lumbosacral plexus of duck and its results may serve as a basis for further investigation on this subject.

scholarly journals IX. Experiments in examination of the peripheral distribution of the fibres of the posterior roots of some spinal nerves

1893 ◽  
Vol 184 ◽  
pp. 641-763 ◽  
Keyword(s):  
Spinal Cord ◽  
Royal Society ◽  
Laboratory Animal ◽  
Hind Limb ◽  
Detailed Examination ◽  
Spinal Nerve ◽  
The Body ◽  
Sacral Plexus ◽  
Spinal Nerves ◽  
Spinal Roots

As a step preliminary to some observations on the reflex functions of the spinal cord of the Monkey, I have attempted to make a rather detailed examination of the distribution of the efferent and afferent roots of each spinal nerve, especially in the lower half of the body of that animal. I have recently published some experimental notes on the arrangement of some motor fibres in the lumbo-sacral plexus, and the present paper deals chiefly with the distribution of the afferent fibres of the roots. Previous Observations. In the researches which have had for their subject the peripheral distribution of the posterior roots of the spinal nerves, the plexuses of the Mammalian fore limb have been more studied than have those pertaining to the hind limb. With the exception of the five experiments extant by L. Türck (1856), there seem no experiments on the cutaneous fields of the afferent spinal roots of the Mammalian bind limb previous to my own. This fact may lend interest to observations, especially on so high a type as the Monkey, and I take this opportunity of expressing my thanks to the Royal Society for pecuniary aid, placing that somewhat expensive laboratory animal within my reach.

Surgical treatment of lumbosacral plexus injuries

2004 ◽  
Vol 1 (1) ◽  
pp. 64-71 ◽  
Author(s):  
Eva Maria Lang ◽  
Jörg Borges ◽  
Thomas Carlstedt
Keyword(s):  
Cauda Equina ◽  
Femoral Nerve ◽  
Severe Trauma ◽  
Lumbosacral Plexus ◽  
Spinal Root ◽  
Content Type ◽  
Spinal Nerves ◽  
Nerve Grafts ◽  
Nerve Transfers ◽  
Fine Print

Object. The purpose of this study was to analyze therapeutic possibilities and clinical outcomes in patients with lumbosacral plexus injuries to develop surgical concepts of treatment. Methods. In a retrospective investigation 10 patients with injuries to the lumbosacral plexus were evaluated after surgery. The patients were assessed clinically, electrophysiologically, and based on the results of magnetic resonance imaging and computerized tomography myelography. In most patients a traction injury had occurred due to severe trauma that also caused pelvic fractures. In most cases the roots of the cauda equina of the lumbosacral plexus had ruptured. In cases of spinal root ruptures repair with nerve grafts were performed. In cases in which proximal stumps of the plexus could not be retrieved palliative nerve transfers by using lower intercostals nerves or fascicles from the femoral nerve were performed. Conclusions. Lesions of the proximal spinal nerves and cauda equina occur in the most serious lumbosacral plexus injuries. Patients with such injuries subjected to reconstruction of spinal nerves, repair of ventral roots in the cauda equina, and nerve transfers recovered basic lower-extremity functions such as unsupported standing and walking.

scholarly journals Human Cadaveric Study of Lumbar Plexus and its Clinical Implication

2017 ◽  
Vol 06 (01) ◽  
pp. 024-034
Author(s):  
Sameer Ram ◽  
Jitendra Patel ◽  
Sanjay Kanani
Keyword(s):  
Clinical Implication ◽  
Femoral Nerve ◽  
Cutaneous Nerve ◽  
Lumbar Plexus ◽  
Lumbar Plexus Block ◽  
Femoral Cutaneous Nerve ◽  
Lateral Cutaneous Nerve ◽  
Plexus Block ◽  
Age Range ◽  
Genital Branch

Abstract Background & Aims: The Lumbar plexus describes the origins of 4 of the nerves supplying the lower limb (femoral, lateral cutaneous nerve of the thigh, obturator and genitofemoral) along with the ilioinguinal and iliohypogastric nerves. Aim of this study is to study the abnormalities in formation of lumbar plexus and communication between the branches of lumbar plexus and its clinical implication. Material & Method: This study was conducted on 100 cadavers (67 male and 33 female) with an age range of 50 – 90 years. Results: No abnormality was found related to roots and trunk. Post fixed lumbar plexus (bilateral) were found in 6 cadavers. Genital branch and femoral branch was found to arise separately from the root in 22 cadavers (bilaterally). Accessory lateral femoral cutaneous nerve was observed on both sides in 4 cadavers. Femoral nerve was found to arise from dorsal division of L3-4-5 in 8 cadavers (bilateral). Accessory obturator nerve was found bilaterally in 26 cadavers and it was arising from L3-4. Conclusion:Knowledge of variations in the formation and branching pattem of lumbar plexus is very important during lumbar plexus block for various surgical and palliative procedures.

scholarly journals  The spinal nerves that constitute the plexus lumbosacrales of the red squirrel (Sciurus vulgaris)

2010 ◽  
Vol 55 (No. 4) ◽  
pp. 183-186 ◽  
Author(s):  
A. Aydin
Keyword(s):  
Hind Limb ◽  
Lumbosacral Plexus ◽  
Red Squirrel ◽  
Sciurus Vulgaris ◽  
Common Root ◽  
Spinal Nerves ◽  
The Common ◽  
The One

This study was aimed at investigating the lumbosacral plexus of squirrels (Sciurus vulgaris). Ten squirrels were used in this work. The animals were carefully dissected and the spinal nerves that constitute the lumbosacral plexus were examined. It was discovered that the lumbosacral plexus was formed by L6, L7, S1, S2 in nine animals and in the one remaining animal in addition to these branches rami ventralis of L4 and L5 were forming the plexus. The common root forming the last part of the lumbosacral plexus and giving branches dispersing to the hind limb was formed by the rami ventralis of L6, L7, S1, S2. Thus, in squirrels, the spinal nerves forming the lumbosacral plexus and the joining of these spinal nerves to each other differs from other rodents and mammals.

scholarly journals An extensive study and review of literature about multiple variations of the lumbar plexus

2017 ◽  
Vol 34 (02) ◽  
pp. 068-072
Author(s):  
S. Nayak ◽  
S. Surendran ◽  
D. Reghunathan ◽  
P. Maloor ◽  
P. Shetty
Keyword(s):  
Abdominal Wall ◽  
Femoral Nerve ◽  
Spinal Nerve ◽  
Extensive Study ◽  
Cutaneous Nerve ◽  
Lumbar Plexus ◽  
Genitofemoral Nerve ◽  
Lateral Cutaneous Nerve ◽  
Muscular Branch ◽  
Psoas Major

Abstract Introduction: Lumbar plexus involves the L1 - L5 spinal segments for the formation of the nerves which supply parts of the abdominal wall, pelvis and the upper part of the thigh (both sensory and motor). Our aim in this study was to compile all the rare variations found in a single cadaver, which is of the rarest possible kind. Methods: During the dissection of the abdomen and pelvis in approximately 70 year old cadaver, there were multiple variations observed in the anatomy of the lumbar plexus. The entire region was cleaned for visibility of the variations and all those were clearly documented for compiling purpose. Results: The following variations in the formation of the lumbar and sacral nerves were observed. 1. The genitofemoral nerve bifurcated at a higher level; genital branch of genitofemoral nerve gave branches to the anterior abdominal wall muscles, 2. A communicating branch was given from the lateral cutaneous nerve of thigh to the medial cutaneous nerve of thigh, 3. A muscular branch was given from femoral nerve to psoas major, 4. There was absence of contribution of L4 spinal nerve in the formation of the lumbosacral trunk, and 5. Lumbosacral trunk gave communicating branches to the femoral and obturator nerves. Most of the variations found were rare and finding all the above said variations in a single cadaver is even rare. Conclusion: Knowledge of the normal anatomy and any possible variations would help the clinicians and surgeons dealing with this region and avoid possible complications beforehand.

scholarly journals The spinal nerves that constitute the lumbosacral plexus and their distribution in the chinchilla

2011 ◽  
Vol 82 (3) ◽  
Author(s):  
M. A. Martinez-Pereira ◽  
E. M. Rickes
Keyword(s):  
Tibial Nerve ◽  
Femoral Nerve ◽  
The Other ◽  
Lumbosacral Plexus ◽  
Ilioinguinal Nerve ◽  
Spinal Nerves ◽  
Posterior Limb ◽  
Pelvic Limb ◽  
Lateral Branches ◽  
L1 And L2

In this study, the spinal nerves that constitute the lumbosacral plexus (plexus lumbosacrales) (LSP) and its distribution in Chinchilla lanigera were investigated. Ten chinchillas (6 males and 4 females) were used in this research. The spinal nerves that constitute the LSP were dissected and the distribution of pelvic limb nerves originating from the plexus was examined. The iliohypogastric nerve arose from L1 and L2,, giving rise to the cranial and caudal nerves, and the ilioinguinal nerve arose from L3. The other branch of L3 gave rise to the genitofemoral nerve and 1 branch from L4 gave rise to the lateral cutaneous femoral nerve. The trunk formed by the union of L4–5 divided into medial (femoral nerve) and lateral branches (obturator nerve). It was found that the LSP was formed by all the ventral branches of L4 at L6 and S1 at S3. At the caudal part of the plexus, a thick branch, the ischiadic plexus, was formed by contributions from L5–6 and S1. This root gave rise to the nerve branches which were disseminated to the posterior limb (cranial and caudal gluteal nerves, caudal cutaneous femoral nerve and ischiadic nerve). The ischiadic nerve divided into the caudal cutaneous surae, lateral cutaneous surae, common fibular and tibial nerve. The pudendal nerve arose from S1–2 and the other branch of S2 and S3 formed the rectal caudal nerve. The results showed that the origins and distribution of spinal nerves that constitute the LSP of chinchillas were similar to those of a few rodents and other mammals.

Posterior Branches of Lumbar Spinal Nerves – Part III: Spinal Dorsal Ramus Mediated Back Pain – Pathomechanism, Symptomatology and Diagnostic Work-up

2017 ◽  
Vol 19 (4) ◽  
pp. 0-0
Author(s):  
Katarzyna Kozera ◽  
Bogdan Ciszek ◽  
Paweł Szaro
Keyword(s):  
Back Pain ◽  
Iliac Crest ◽  
Spinal Nerve ◽  
The Body ◽  
Spinal Nerves ◽  
Spinal Dorsal ◽  
Diagnostic Work ◽  
Lumbar Spinal ◽  
Work Up ◽  
Diagnostic Work Up

Spinal Dorsal Ramus Mediated Back Pain is the second most frequently described condition (the first one being Lumbar Facet Syndrome) originating from pathology involving posterior branches of lumbar spinal nerves. Spinal Dorsal Ramus Mediated Back Pain was described as “thoracolumbar junction syndrome” by Maigne in 1989. As a rule, Spinal Dorsal Ramus Mediated Back Pain presents unilaterally within posterior branches at the levels Th11-12 and L1-2. The pain is triggered by extension and/or rotation. Typical symptoms include pain that may radiate towards the gluteal area and posterior iliac crest and does not cross the body midline. Clinical symptoms may correlate with the area supplied by the whole spinal nerve of the given segment, including both the posterior and anterior branch. For this reason, patients may report not only low back pain, but also pseudovisceral pain in the hypogastric area, false sciatic neuralgia, tenderness of the pubic symphysis and hypersensitivity of the intestines. The above symptoms may lead to diagnostic difficulties. Diagnostic work-up may benefit from performance of the Kibler Fold Test to determine sensitivity of the tissues surrounding the iliac crest. Patients with Spinal Dorsal Ramus Mediated Back Pain respond well to manual manipulative techniques if these are delivered in a technically correct manner and address the appropriate segment. A recommended approach for patients with absolute contraindications to manipulation, i.e. advanced osteoporosis or osteogenesis imperfecta, is a block of the po­sterior branch of the spinal nerve involved.

scholarly journals Magnetic resonance imaging evidence for perineural spread of endometriosis to the lumbosacral plexus: report of 2 cases

2015 ◽  
Vol 39 (3) ◽  
pp. E15 ◽  
Author(s):  
Ana C. Siquara de Sousa ◽  
Stepan Capek ◽  
Benjamin M. Howe ◽  
Mark E. Jentoft ◽  
Kimberly K. Amrami ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Sciatic Nerve ◽  
Proof Of Concept ◽  
Lumbosacral Plexus ◽  
Resonance Imaging ◽  
Sacral Plexus ◽  
Perineural Spread ◽  
Rare Presentation ◽  
Spinal Nerves ◽  
Magnetic Resonance Imaging Evidence

Sciatic nerve endometriosis (EM) is a rare presentation of retroperitoneal EM. The authors present 2 cases of catamenial sciatica diagnosed as sciatic nerve EM. They propose that both cases can be explained by perineural spread of EM from the uterus to the sacral plexus along the pelvic autonomie nerves and then further distally to the sciatic nerve or proximally to the spinal nerves. This explanation is supported by MRI evidence in both cases. As a proof of concept, the authors retrieved and analyzed the original MRI studies of a case reported in the literature and found a similar pattern of spread. They believe that the imaging evidence of their institutional cases together with the outside case is a very compelling indication for perineural spread as a mechanism of EM of the nerve.

Sacral plexus disorder caused by a wooden toothpick in the rectum

2021 ◽  
Vol 14 (1) ◽  
pp. e238690
Author(s):  
Takuro Endo ◽  
Taku Sugawara ◽  
Naoki Higashiyama
Keyword(s):  
Lower Limb ◽  
Spinal Nerve ◽  
Leg Pain ◽  
Sacral Plexus ◽  
Lateral Recess ◽  
Lateral Recess Stenosis ◽  
Preoperative Ct ◽  
History Of ◽  
History Of Pain ◽  
The Right

A 67-year-old man presented with a 2-month history of pain in his right buttock and lower limb. MRI depicted right L5/S1 lateral recess stenosis requiring surgical treatment; however, preoperative CT showed an approximately 7 cm long, thin, rod-shaped structure in the rectum, which was ultimately determined to be an accidentally ingested toothpick. It was removed surgically 6 days after diagnosis, because right leg pain worsened rapidly. The pain disappeared thereafter, and the symptoms have not recurred since. The pain might have been localised to the right buttock and posterior thigh in the early stages because the fine tip of the toothpick was positioned to the right of the anterior ramus of the S2 spinal nerve. Although sacral plexus disorder caused by a rectal foreign body is extremely rare, physicians should be mindful to avoid misdiagnosis.

scholarly journals Perineural spread of pelvic malignancies to the lumbosacral plexus and beyond: clinical and imaging patterns

2015 ◽  
Vol 39 (3) ◽  
pp. E14 ◽  
Author(s):  
Stepan Capek ◽  
Benjamin M. Howe ◽  
Kimberly K. Amrami ◽  
Robert J. Spinner
Keyword(s):  
Sciatic Nerve ◽  
Lumbosacral Plexus ◽  
Perineural Spread ◽  
Tumor Spread ◽  
Spinal Nerves ◽  
Lumbosacral Plexopathy ◽  
Pelvic Cancer ◽  
Group A ◽  
Group B

OBJECT Perineural spread along pelvic autonomie nerves has emerged as a logical, anatomical explanation for selected cases of neoplastic lumbosacral plexopathy (LSP) in patients with prostate, bladder, rectal, and cervical cancer. The authors wondered whether common radiological and clinical patterns shared by various types of pelvic cancer exist. METHODS The authors retrospectively reviewed their institutional series of 17 cases concluded as perineural tumor spread. All available history, physical examination, electrodiagnostic studies, biopsy data and imaging studies, evidence of other metastatic disease, and follow-up were recorded in detail. The series was divided into 2 groups: cases with neoplastic lumbosacral plexopathy confirmed by biopsy (Group A) and cases included based on imaging characteristics despite the lack of biopsy or negative biopsy results (Group B). RESULTS Group A comprised 10 patients (mean age 69 years); 9 patients were symptomatic and 1 was asymptomatic. The L5–S1 spinal nerves and sciatic nerve were most frequently involved. Three patients had intradural extension. Seven patients were alive at last follow-up. Group B consisted of 7 patients (mean age 64 years); 4 patients were symptomatic, 2 were asymptomatic, and 1 had only imaging available. The L5–S1 spinal nerves and the sciatic nerve were most frequently involved. No patients had intradural extension. Four patients were alive at last follow-up. CONCLUSIONS The authors provide a unifying theory to explain lumbosacral plexopathy in select cases of various pelvic neoplasms. The tumor cells can use splanchnic nerves as conduits and spread from the end organ to the lumbosacral plexus. Tumor can continue to spread along osseous and muscle nerve branches, resulting in muscle and bone “metastases.” Radiological studies show a reproducible, although nonspecific pattern, and the same applies to clinical presentation.

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