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Abd El-rady Mahmoud Abd El-rady - One of the best experts on this subject based on the ideXlab platform.
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Mono segmental fixation of selected types of thoracic and lumbar fractures; a prospective study
International Orthopaedics, 2016Co-Authors: Fady Michael Fahmy Ibrahim, Abd El-rady Mahmoud Abd El-radyAbstract:Aim of study A prospective study to evaluate the results of monosegmental fixation; fixation of the fractured level with the Adjacent Vertebra sharing the same disc, in selected types of lumbar and thoracic fractures. This technique aims at saving motion levels by fusion of the only affected motion segment without sacrificing other levels. Methods Forty patients enrolled in this study between August 2011 and October 2013. The inclusion criteria were recent thoracic or lumbar Vertebral fractures (less than 2 weeks). The fracture involves only one of the end plates of the Vertebrae (either the superior or the inferior). The other end plate and both pedicles should be intact. The exclusion criteria were cervical fractures, fractures that include both end plates or pedicles of the Vertebra, fracture dislocation, and load sharing classification score more than seven. All patients underwent monosegmental fixation with pedicle screw fixation. Eight patients were supplemented with interbody grafts. Radiological evaluation was done to assess local kyphosis angle, degree of compression of the anterior column, the degree of comminution, retropulsed fragment, neural canal compromise, integrity of the affected end plate, exclusion of pedicle fracture, and most important to assure that only one end plate is affected. All patients were assessed neurologically according to Frankel grading system. Patient were assessed by Denis pain scale and Denis work scale. Results The age of the patients was of a mean of 34.5 years old. All patients were Frankle E at time of presentation and remained the same post-operative. The mean operative time from incision time to end of skin closure was 74.2 min. The mean blood loss was 230 ml. The pre-operative degree of local kyphosis; was of a mean 8.22°. This was improved to 2.25° at the immediate postoperative x-rays. At two years follow up, the loss of correction was of a mean 0.85° which was insignificant. The pre-operative percentage of height lost improved from a mean of 56.05 % to post-operative mean of 90.125 %. At the end of follow up, no pseudoarthrosis cases or metal failure were noticed. Discussion Thoracic and lumbar fractures are common in young adults. Surgical treatment offers early rehabilitation and preserves spine alignment. Monosegmental fixation technique in selected types of dorsal and lumbar fractures offers spine stability and preserves motion segments. It fuses only one motion segment that is prone for later instability or deformity. Reconstrcution of the anterior column can be achieved through TLIF approach in combination of monosegmental fixation to achieve 360° fusion. Conclusion Monosegmental fixation is an effective technique. It can save motion segments in young patients with adequate spine stability and good functional outcomes.
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Mono segmental fixation of selected types of thoracic and lumbar fractures; a prospective study.
International Orthopaedics, 2016Co-Authors: Fady Ibrahim, Abd El-rady Mahmoud Abd El-radyAbstract:Aim of study A prospective study to evaluate the results of monosegmental fixation; fixation of the fractured level with the Adjacent Vertebra sharing the same disc, in selected types of lumbar and thoracic fractures. This technique aims at saving motion levels by fusion of the only affected motion segment without sacrificing other levels.
Paul Park - One of the best experts on this subject based on the ideXlab platform.
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Schmorl’s nodes
European Spine Journal, 2012Co-Authors: Kwaku A. Kyere, Khoi D. Than, Anthony C. Wang, Shayan U. Rahman, Frank La Marca, Juan M. Valdivia–valdivia, Paul ParkAbstract:Introduction First described in 1927, a Schmorl’s node (SN) is the herniation of nucleus pulposus (NP) through the cartilaginous and bony end plate into the body of the Adjacent Vertebra. SNs are common findings on imaging, and although most SNs are asymptomatic, some have been shown to become painful lesions. In this manuscript, we review the literature regarding the epidemiology, clinical presentation, pathogenesis, imaging, and management of SNs. Materials and methods Using databases from the US National Library of Medicine and the National Institutes of Health, relevant articles were identified. Results While several theories regarding the pathogenesis of SNs have been proposed, an axial load model appears to have the greatest supporting evidence. Symptomatic SNs are thought to be due to the inflammatory response solicited by the herniation of NP into the well-vascularized Vertebral body. Management options for symptomatic SNs vary, ranging from medical management to surgical fusion. Conclusion SNs are common lesions that are often asymptomatic. In certain cases, SNs can cause back pain. No consensus on pathogenesis exists. There is no established treatment modality for symptomatic SNs.
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Schmorl’s nodes
European Spine Journal, 2012Co-Authors: Kwaku A. Kyere, Khoi D. Than, Anthony C. Wang, Shayan U. Rahman, Juan Valdivia, Frank La Marca, Paul ParkAbstract:Introduction First described in 1927, a Schmorl’s node (SN) is the herniation of nucleus pulposus (NP) through the cartilaginous and bony end plate into the body of the Adjacent Vertebra. SNs are common findings on imaging, and although most SNs are asymptomatic, some have been shown to become painful lesions. In this manuscript, we review the literature regarding the epidemiology, clinical presentation, pathogenesis, imaging, and management of SNs.
Fady Michael Fahmy Ibrahim - One of the best experts on this subject based on the ideXlab platform.
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Mono segmental fixation of selected types of thoracic and lumbar fractures; a prospective study
International Orthopaedics, 2016Co-Authors: Fady Michael Fahmy Ibrahim, Abd El-rady Mahmoud Abd El-radyAbstract:Aim of study A prospective study to evaluate the results of monosegmental fixation; fixation of the fractured level with the Adjacent Vertebra sharing the same disc, in selected types of lumbar and thoracic fractures. This technique aims at saving motion levels by fusion of the only affected motion segment without sacrificing other levels. Methods Forty patients enrolled in this study between August 2011 and October 2013. The inclusion criteria were recent thoracic or lumbar Vertebral fractures (less than 2 weeks). The fracture involves only one of the end plates of the Vertebrae (either the superior or the inferior). The other end plate and both pedicles should be intact. The exclusion criteria were cervical fractures, fractures that include both end plates or pedicles of the Vertebra, fracture dislocation, and load sharing classification score more than seven. All patients underwent monosegmental fixation with pedicle screw fixation. Eight patients were supplemented with interbody grafts. Radiological evaluation was done to assess local kyphosis angle, degree of compression of the anterior column, the degree of comminution, retropulsed fragment, neural canal compromise, integrity of the affected end plate, exclusion of pedicle fracture, and most important to assure that only one end plate is affected. All patients were assessed neurologically according to Frankel grading system. Patient were assessed by Denis pain scale and Denis work scale. Results The age of the patients was of a mean of 34.5 years old. All patients were Frankle E at time of presentation and remained the same post-operative. The mean operative time from incision time to end of skin closure was 74.2 min. The mean blood loss was 230 ml. The pre-operative degree of local kyphosis; was of a mean 8.22°. This was improved to 2.25° at the immediate postoperative x-rays. At two years follow up, the loss of correction was of a mean 0.85° which was insignificant. The pre-operative percentage of height lost improved from a mean of 56.05 % to post-operative mean of 90.125 %. At the end of follow up, no pseudoarthrosis cases or metal failure were noticed. Discussion Thoracic and lumbar fractures are common in young adults. Surgical treatment offers early rehabilitation and preserves spine alignment. Monosegmental fixation technique in selected types of dorsal and lumbar fractures offers spine stability and preserves motion segments. It fuses only one motion segment that is prone for later instability or deformity. Reconstrcution of the anterior column can be achieved through TLIF approach in combination of monosegmental fixation to achieve 360° fusion. Conclusion Monosegmental fixation is an effective technique. It can save motion segments in young patients with adequate spine stability and good functional outcomes.
Bürger R - One of the best experts on this subject based on the ideXlab platform.
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Kinetic studies of the lumbar Vertebrae and the lumbosacral transition in the German shepherd dog. 2. Our personal investigations
Schweizer Archiv Fur Tierheilkunde, 1993Co-Authors: Bürger R, Lang JAbstract:: The range and type of ventrodorsal motion between two Adjacent Vertebra (L3-S1) was analyzed on isolated Vertebral columns of 13 German Shepherd Dogs. All except one were neurologically normal dogs. The movement from maximal flexion to maximal extension was divided into 5 degree steps. For each step, the center of motion was determined on laterolateral radiographs. It could be shown that mobility between two Adjacent Vertebra within the lumbar spine increases towards the lumbosacral region with the highest mobility in this joint. In the cranial portion of the lumbar spine, rotation and ventrodorsal (parallel) displacement between two Adjacent Vertebra was seen. Rotation dominated in the lumbosacral joint in 11 dogs, whereas parallel displacement was mainly seen in 2 dogs. Further studies on pathologic and surgically modified Vertebral columns are necessary to clarify the significance of these findings in the pathogenesis of lumbosacral instability and cauda equina compression in the German Shepherd Dog.
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Kinetic study of the lumbar Vertebrae and the lumbosacral passage in German shepherd dogs. 1. Functional anatomy and kinetic foundation
Schweizer Archiv Fur Tierheilkunde, 1992Co-Authors: Bürger R, J LangAbstract:: In the dog congenital or acquired stenosis of the lumbosacral region is commonly encountered. In humans the lumbosacral junction is the most often affected part of the Vertebral column. Lumbosacral instability, one possible etiology for stenosis of the Vertebral canal plays an important role in man. This study summarizes the functional anatomy and some important geometric and kinematic considerations necessary for the understanding of the motion (flexion-extension) between two Adjacent Vertebra.
Kwaku A. Kyere - One of the best experts on this subject based on the ideXlab platform.
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Schmorl’s nodes
European Spine Journal, 2012Co-Authors: Kwaku A. Kyere, Khoi D. Than, Anthony C. Wang, Shayan U. Rahman, Frank La Marca, Juan M. Valdivia–valdivia, Paul ParkAbstract:Introduction First described in 1927, a Schmorl’s node (SN) is the herniation of nucleus pulposus (NP) through the cartilaginous and bony end plate into the body of the Adjacent Vertebra. SNs are common findings on imaging, and although most SNs are asymptomatic, some have been shown to become painful lesions. In this manuscript, we review the literature regarding the epidemiology, clinical presentation, pathogenesis, imaging, and management of SNs. Materials and methods Using databases from the US National Library of Medicine and the National Institutes of Health, relevant articles were identified. Results While several theories regarding the pathogenesis of SNs have been proposed, an axial load model appears to have the greatest supporting evidence. Symptomatic SNs are thought to be due to the inflammatory response solicited by the herniation of NP into the well-vascularized Vertebral body. Management options for symptomatic SNs vary, ranging from medical management to surgical fusion. Conclusion SNs are common lesions that are often asymptomatic. In certain cases, SNs can cause back pain. No consensus on pathogenesis exists. There is no established treatment modality for symptomatic SNs.
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Schmorl’s nodes
European Spine Journal, 2012Co-Authors: Kwaku A. Kyere, Khoi D. Than, Anthony C. Wang, Shayan U. Rahman, Juan Valdivia, Frank La Marca, Paul ParkAbstract:Introduction First described in 1927, a Schmorl’s node (SN) is the herniation of nucleus pulposus (NP) through the cartilaginous and bony end plate into the body of the Adjacent Vertebra. SNs are common findings on imaging, and although most SNs are asymptomatic, some have been shown to become painful lesions. In this manuscript, we review the literature regarding the epidemiology, clinical presentation, pathogenesis, imaging, and management of SNs.
