CT diagnosis of lumbosacral conjoined nerve roots

Torricelli, Pietro; Spina, Vincenzo; Martinelli, C

doi:10.1007/bf00348918

Cited by 19 publications

(6 citation statements)

References 6 publications

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“…12 Imaging studies like computerized tomography scans have reported incidences of 2%. 13,14 MRI scans are presently the most commonly used imaging modality to detect conjoined roots. [15][16][17] Various signs on routine sagittal and axial MRI scans have been described such as Kang et al sagittal shoulder sign and the axial sagittal passage sign.…”

Section: Discussionmentioning

confidence: 99%

Triple Conjoined Nerve Root—An Unreported Anatomical Variant and Its Surgical Implications

Gassie

Ravindran

Rahmathulla

et al. 2020

Indian Journal of Neurosurgery

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Conjoined nerve roots are an infrequent and uncommon finding, rarely noted preoperatively. The conjoined root anomaly has potential for significant neurological injury during surgery. Preoperative recognition may avert disastrous nerve root injury but requires a high degree of clinical suspicion. We present the case of a 44-year-old patient with left L5/S1 radiculopathy caused by a herniated disc. During surgery we identified a triple conjoined nerve root anatomy. This anatomical variant, to our knowledge, has not been reported in literature. We describe the anatomical findings and surgical implications.

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Section: Discussionmentioning

confidence: 99%

Triple Conjoined Nerve Root—An Unreported Anatomical Variant and Its Surgical Implications

Gassie

Ravindran

Rahmathulla

et al. 2020

Indian Journal of Neurosurgery

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“…Sometimes two separate, conjoined round structures, which can be followed in the next slices through the intervertebral foramen, can be observed. Another helpful tool is the estimation of attenuation values allowing the differentiation of denser herniated discs from dural sac structures [20]. Additionally, conjoined nerve roots are typically located close to the pedicle level in axial slices, whereas herniated discs can only be found in this location in the case of migrated disc fragments.…”

Section: Discussion: Diagnostic Methodsmentioning

confidence: 99%

Conjoined lumbosacral nerve roots: current aspects of diagnosis

Böttcher

Petrovitch

Sörös

et al. 2004

European Spine Journal

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Conjoined lumbosacral nerve roots (CLNR) are the most common anomalies involving the lumbar nerve structures which can be one of the origins of failed back syndromes. They can cause sciatica even without the presence of a additional compressive impingement (such as disc herniation, spondylolisthesis or lateral recess stenosis), and often congenital lumbosacral spine anomalies (such as bony defects) are present at the "conjoined sheaths". This congenital anomaly has been reported in 14% of cadaver studies, but myelographic or computed tomographic studies have revealed an incidence of approximately 4% only. Diagnostic methods such as magnetic resonance imaging (MRI) are helpful for determination of the exact anatomical relations in this context. We present five typical cases of conjoined nerve roots observed during a 1 year period, equivalent to 6% of our out-patients without a history of surgical treatment on the lumbar spine. In all cases with suspicious radiological findings MRI or lumbar myelography combined with CT and multiplanar reconstructions is recommended.

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“…Consisten en la agrupación de dos raíces nerviosas adyacentes contenidas en una envoltura dural común, localizada en diferentes partes de su trayecto habitual 2 . Son el tipo de anomalías más común de las raíces nerviosas; de origen congénito, asociado a la migración aberrante de las raíces nerviosas durante el periodo embrionario, sin una causa clara establecida; la incidencia según la literatura es variable, teniendo en cuenta el diagnóstico clínico, imagenológico e intraoperatorio 3,4 . Los hallazgos realizados mediante estudios imagenológicos (tomografía computarizada [TC], resonancia magnética [RM] y melografía) varían la incidencia entre el 2 y el 17%, y en estudios cadavéricos entre el 14 y 30%, siendo la localización más común en segmento L5-S1 con predomino de lateralidad izquierda [4][5][6][7] .…”

Section: Introductionunclassified

Raíces nerviosas conjuntas: hallazgos por resonancia magnética en pacientes con lumbalgia

Gracia-Ramírez,

Ramos-Pacheco,

Rodríguez-Delgado

2024

ARM

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Identificar la presencia de raíces lumbares conjuntas como hallazgo en pacientes referidos a estudio de resonancia magnética con diagnóstico de lumbalgia. Método: Estudio retrospectivo en pacientes con lumbalgia sometidos a resonancia magnética, entre el 1 de enero y el 31 de diciembre del año 2021, en el Centro Integral de Interpretación para el Diagnóstico (CIID) de Laboratorio Médico Polanco. Resultados: Se incluyeron 919 casos, encontrando raíces nerviosas conjuntas en 10 (1.088%) pacientes entre 21 y 75 años, todos en el nivel L5-S1 con presentación indistinta de sexo y de lateralidad. Los signos encontrados en todos los casos, 100% con signo de paralelo, 70% con signo de la esquina y 50% signo de la media luna grasa, así como asociaciones de presentación entre estos. Conclusión: El diagnóstico de la raíz nerviosa conjunta es una serendipia que no puede diferenciarse mediante alguna característica sociodemográfica o clínica, ya que la lumbalgia es el principal síntoma, pero no es un síntoma exclusivo.

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CT diagnosis of lumbosacral conjoined nerve roots

Cited by 19 publications

References 6 publications

Triple Conjoined Nerve Root—An Unreported Anatomical Variant and Its Surgical Implications

Triple Conjoined Nerve Root—An Unreported Anatomical Variant and Its Surgical Implications

Conjoined lumbosacral nerve roots: current aspects of diagnosis

Raíces nerviosas conjuntas: hallazgos por resonancia magnética en pacientes con lumbalgia

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