Posterior cervical foraminotomy: anatomic study in cadavers
OBJECTIVE: This study was designed to use different segments of the cervical spine in cadavers to determine how much lateral mass should be resected for adequate foraminal decompression. METHODS: Six cadavers were used. The region of the cervical spine from C1 to the C7-T1 transition was dissected...
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Sociedade Brasileira de Coluna (SBC)
2014-03-01
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doaj-2ca14cb188af480d8c88e7e3cff424fc2020-11-24T22:45:27ZengSociedade Brasileira de Coluna (SBC)Coluna/Columna 2177-014X2014-03-01131495210.1590/S1808-185120141301RCC68S1808-18512014000100049Posterior cervical foraminotomy: anatomic study in cadaversLuizio Augusto Arantes JúniorFrancisco Alves de Araújo JúniorJosé Augusto MalheirosSebastião Nataniel Silva GusmãoArthur Adolfo NicolatoGabriel GouveiaOBJECTIVE: This study was designed to use different segments of the cervical spine in cadavers to determine how much lateral mass should be resected for adequate foraminal decompression. METHODS: Six cadavers were used. The region of the cervical spine from C1 to the C7-T1 transition was dissected and exposed. The lateral mass of each vertebra was measured bilaterally before the foraminotomy in the following segments: C2-C3, C3-C4, C4-C5, C5-C6 and C6-C7. The procedure was performed with a high-speed drill and through surgical microscopy. Three foraminotomies were performed (F1, F2, F3) in each level. Lateral masses were measured after foraminotomy procedures and compared to the initial measurement, creating a percentage of lateral mass needed for decompression.. The value of the entire surface was defined as 100%. RESULTS: There was a statistical difference between the amounts of the resected lateral mass through each foraminotomy (F1, F2, F3) at the same level. However, there was no statistical significant difference among the different levels. The average percentage of resection of the lateral masses in F2 were 27.7% at C2-C3, 24.8% at C3-C4, 24.4% at C4-C5 and 23.8% and 31.2% at C5-C6 and C6-C7, respectively. In F3, the level that needed greater resection of the lateral masses was C6-C7 level, where the average resection ranged between 41.2% and 47.9%. CONCLUSION: In all segments studied, the removal of approximately 24 to 32% of the facet joint allowed adequate exposure of the foraminal segment, with visualization of the dural sac and the exit of the cervical root.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1808-18512014000100049&lng=en&tlng=enForaminotomíaColumna vertebralCadáver |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Luizio Augusto Arantes Júnior Francisco Alves de Araújo Júnior José Augusto Malheiros Sebastião Nataniel Silva Gusmão Arthur Adolfo Nicolato Gabriel Gouveia |
spellingShingle |
Luizio Augusto Arantes Júnior Francisco Alves de Araújo Júnior José Augusto Malheiros Sebastião Nataniel Silva Gusmão Arthur Adolfo Nicolato Gabriel Gouveia Posterior cervical foraminotomy: anatomic study in cadavers Coluna/Columna Foraminotomía Columna vertebral Cadáver |
author_facet |
Luizio Augusto Arantes Júnior Francisco Alves de Araújo Júnior José Augusto Malheiros Sebastião Nataniel Silva Gusmão Arthur Adolfo Nicolato Gabriel Gouveia |
author_sort |
Luizio Augusto Arantes Júnior |
title |
Posterior cervical foraminotomy: anatomic study in cadavers |
title_short |
Posterior cervical foraminotomy: anatomic study in cadavers |
title_full |
Posterior cervical foraminotomy: anatomic study in cadavers |
title_fullStr |
Posterior cervical foraminotomy: anatomic study in cadavers |
title_full_unstemmed |
Posterior cervical foraminotomy: anatomic study in cadavers |
title_sort |
posterior cervical foraminotomy: anatomic study in cadavers |
publisher |
Sociedade Brasileira de Coluna (SBC) |
series |
Coluna/Columna |
issn |
2177-014X |
publishDate |
2014-03-01 |
description |
OBJECTIVE: This study was designed to use different segments of the cervical spine in cadavers to determine how much lateral mass should be resected for adequate foraminal decompression. METHODS: Six cadavers were used. The region of the cervical spine from C1 to the C7-T1 transition was dissected and exposed. The lateral mass of each vertebra was measured bilaterally before the foraminotomy in the following segments: C2-C3, C3-C4, C4-C5, C5-C6 and C6-C7. The procedure was performed with a high-speed drill and through surgical microscopy. Three foraminotomies were performed (F1, F2, F3) in each level. Lateral masses were measured after foraminotomy procedures and compared to the initial measurement, creating a percentage of lateral mass needed for decompression.. The value of the entire surface was defined as 100%. RESULTS: There was a statistical difference between the amounts of the resected lateral mass through each foraminotomy (F1, F2, F3) at the same level. However, there was no statistical significant difference among the different levels. The average percentage of resection of the lateral masses in F2 were 27.7% at C2-C3, 24.8% at C3-C4, 24.4% at C4-C5 and 23.8% and 31.2% at C5-C6 and C6-C7, respectively. In F3, the level that needed greater resection of the lateral masses was C6-C7 level, where the average resection ranged between 41.2% and 47.9%. CONCLUSION: In all segments studied, the removal of approximately 24 to 32% of the facet joint allowed adequate exposure of the foraminal segment, with visualization of the dural sac and the exit of the cervical root. |
topic |
Foraminotomía Columna vertebral Cadáver |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1808-18512014000100049&lng=en&tlng=en |
work_keys_str_mv |
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