Relationship Between the Levels of Normal Conus Medullaris and Body Mass Index in the Turkish Adult Population

Binokay, Figen; Şeydaoğlu, Gülşah; Erman, Tahsin; Akgül, Erol; Bicakci, Kenan

doi:10.1097/wnq.0b013e31828c6f1e

Cited by 3 publications

(9 citation statements)

References 13 publications

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“…During investigations of thoracolumbar myelopathy, commonly obtained MRIs include the thoracic, lumbar and sacral segments and T1‐weighted and T2‐weighted sequences. In two human studies assessing the relationship between CM, body mass and age, the use of tranverse and dorsal sequences helped better identify the termination points of the caudal spinal cord 19 25 . However, in the authors' hospital, transverse images of the caudal spinal cord do not tend to be acquired in the absence of pathology in that area.…”

Section: Discussionmentioning

confidence: 96%

“…Occasionally, dorsal or transverse views or MR myelography were analysed. [18][19][20][21][22][23][24][25] Based on this information, the authors opted to use T2-weighted images to determine the position of CM as the surrounding CSF is markedly hyperintense compared with the spinal cord parenchyma, allowing easier identiication of the CM. A T1-weighted image was used for identiication of the DS as it gives good contrast between the hypointense CSF and the hyperintense epidural fat.…”

Section: Discussionmentioning

confidence: 99%

“…A human literature review revealed most of these studies use sagittal T2‐weighted and/or T1‐weighted images to identify the CM, while sagittal T1‐weighted images are most often used to assess DS position. Occasionally, dorsal or transverse views or MR myelography were analysed 18–25 . Based on this information, the authors opted to use T2‐weighted images to determine the position of CM as the surrounding CSF is markedly hyperintense compared with the spinal cord parenchyma, allowing easier identification of the CM.…”

Section: Discussionmentioning

confidence: 99%

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Variation in the position of the conus medullaris and dural sac in adult dogs

et al. 2019

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Although it has long been stated that the level of spinal cord termination varies depending on the size of the dog, the evidence for this remains limited. The aim of this study is to investigate the position of the conus medullaris (CM) and dural sac (DS) in a population of dogs of varying size. MRIs of the thoracolumbosacral spine of 101 dogs were included. The location of CM and DS was determined on sagittal T2-weighted images and T1-weighted images, respectively, by three independent observers. The bodyweight and the back length were used as markers of size. Regression analysis showed that the termination point of the CM had a statistically significant relationship with bodyweight (R2=0.23, P<0.05). Although not statistically significant (P=0.058), a similar relationship was found between CM and back length (R2=0.21). No statistically significant relationship was found between the termination point of the DS and bodyweight (P=0.24) or back length (P=0.19). The study confirms the terminal position of the CM is dependent on size, with a more cranial position with increasing size; however, the termination point of DS remains constant irrespective of dog size.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Variation in the position of the conus medullaris and dural sac in adult dogs

et al. 2019

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“…On the other hand, in the literature, the relationship between the level of CMt and the body mass index (BMI) has been evaluated in very few studies. 19,33 Moreover, Lin et al 11 stated that despite the fact that disc herniation is common in the general population, the effect on the level of CMt of the disc herniation has not been well investigated.…”

Section: Introductionmentioning

confidence: 99%

Examination of the Level of Conus Medullaris Termination Using Magnetic Resonance Imaging

et al. 2021

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Introduction: Recognition of the level of the conus medullaris termination (CMt) is of clinical importance for avoiding iatrogenic injuries during spinal anesthesia and lumbar puncture. Although CMt levels have been examined in a variety of studies, they vary in classical textbooks and literature studies. The aim of this study was to investigate the level of CMt and its correlation to gender, age, and body mass index (BMI) using magnetic resonance imaging (MRI) in healthy individuals and those with lumbar disc herniation. Methods: The lumbar MRIs of 341 subjects, including healthy individuals (F: 123, M: 68) and those with lumbar disc herniation (F: 105, M: 45), were retrospectively examined, and the CMt levels were determined. Results: It was found that CMt levels were most commonly located at upper 1/3 of the L1 vertebral body in both healthy individuals and those with disc herniation groups. No statistically significant difference was observed between the two groups evaluated. In addition, no significant mean level of CMt, weight, height, and BMI difference existed between the two groups. Conclusion: In the literature, the highest level of CMt is seen as being at the intervertebral disc between T11 and T12 vertebrae, while the lowest level of the CMt is seen as being at lower 1/3 of the L3 vertebral body. Consequently, we are of the opinion that the L3-4 or L4-5 intervertebral spaces should be preferred to lower the complication rate in procedures such as spinal anesthesia and lumbar puncture.

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“…The normal position of the conus medullaris by 3 months of age is at or above the L1-L2 disc space which is present in 96% of the population [1] . Tethered cord syndrome describes the neurological symptoms and deficits which are thought to arise from hypoxic stress with vascular insufficiency in the stretched spinal cord.…”

Section: Introductionmentioning

confidence: 99%

Progressive Kyphosis Associated with Tethered Cord Syndrome Treated by Posterior Vertebral Column Resection in a Pediatric Patient

Oktay

Özsoy²,

Gezercan³

et al. 2017

Pediatr Neurosurg

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Posterior vertebral column resection is a novel surgical approach for the treatment of progressive kyphosis associated with tethered cord syndrome that was first treated with untethering surgery. A patient with tethered cord syndrome associated with kyphosis first underwent untethering surgery, resulting in progressive kyphosis. Posterior vertebral column resection was performed to correct the kyphosis while shortening the spinal column to prevent the spinal cord from stretch injury. Good correction of kyphosis and reduction of tension on the neural elements were achieved without any neurological deficits. In progressive kyphosis associated with tethered cord syndrome, posterior vertebral column resection after untethering surgery represents a safe and efficacious but technically challenging option.

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Relationship Between the Levels of Normal Conus Medullaris and Body Mass Index in the Turkish Adult Population

Cited by 3 publications

References 13 publications

Variation in the position of the conus medullaris and dural sac in adult dogs

Variation in the position of the conus medullaris and dural sac in adult dogs

Examination of the Level of Conus Medullaris Termination Using Magnetic Resonance Imaging

Progressive Kyphosis Associated with Tethered Cord Syndrome Treated by Posterior Vertebral Column Resection in a Pediatric Patient

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