Design and experiment of the pedicle aiming device for the cervical spine / 中国医学科学院学报
Acta Academiae Medicinae Sinicae
; (6): 156-159, 2005.
Article
em Zh
| WPRIM
| ID: wpr-343748
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To probe the accuracy and safety of using an aiming device in the transpedicular fixation of cervical spine.</p><p><b>METHODS</b>Eight cervical specimens were obtained. We used the computed tomography (CT) to scan C3 to C7, measured the medial angle of the pedicle, and determined the location of the pedicle projecting on the articular process. Then we took the oblique X-ray film, measured the cephalic/caudal angle of the pedicle, and determined the location of the pedicle projecting on the articular process. All the specimens were equally divided into two groups. Screws of 2.8 mm x 30 mm, were used. Specimens in one group were inserted with the transpedicular screw manually, while specimens in the other one inserted with the transpedicular screw using a self-designed aiming device that can be modulate at the three dimensions according to the angles of the pedicles.</p><p><b>RESULTS</b>The first group totally had 40 screws from C3 to C7. There were 13 screws in the pedicle, 9 violated the walls of the pedicle but not involved the adjunct structure, and 18 injured the important structure such as spinal cord, verteberal artery, or nerve root. In the other group, only 4 screws violated the walls of the pedicle but not involved the adjunct structure, and the others all in the pedicles. The difference was of statistical significance (P < 0.01).</p><p><b>CONCLUSION</b>In the cervical spine, transpedicular fixation using an aiming device can improve the accuracy and safety during operation.</p>
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Índice:
WPRIM
Assunto principal:
Dispositivos de Fixação Ortopédica
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Padrões de Referência
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Fusão Vertebral
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Cirurgia Geral
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Parafusos Ósseos
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Terapia Assistida por Computador
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Diagnóstico por Imagem
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Tomografia Computadorizada por Raios X
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Vértebras Cervicais
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Fixadores Internos
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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Female
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Humans
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Male
Idioma:
Zh
Revista:
Acta Academiae Medicinae Sinicae
Ano de publicação:
2005
Tipo de documento:
Article