Document Detail


Morphologic evaluation and surgical simulation of ossification of the posterior longitudinal ligament using helical computed tomography with three-dimensional and multiplanar reconstruction.
MedLine Citation:
PMID:  9076886     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
STUDY DESIGN: Using helical computed tomography with three-dimensional and multiplanar reconstruction, ossification of the posterior longitudinal ligament in the cervical and thoracic region was observed. Preoperative simulation also was performed, and the availability of these methods was evaluated. OBJECTIVE: To use preoperative evaluation and simulation with helical computed tomography to enhance the accuracy of excision of ossification of the posterior longitudinal ligament lesion. SUMMARY OF BACKGROUND DATA: Ossification of the posterior longitudinal ligament lesion is sometimes so complicated that preoperative morphologic evaluation and excision of the lesion are difficult when using only conventional imaging techniques. METHODS: Seven cases of cervical and two cases of thoracic ossification of the posterior longitudinal ligament were scanned using helical computed tomography at 2-mm or 5-mm slice thickness. Three-dimensional and multiplanar reconstruction were performed at 0.7-mm or 2-mm intervals in the bone window. Surgical simulation of the anterior approach for cervical lesion and posterior approaches for thoracic lesion was performed. RESULTS: Preoperative direct observation of the ossification of the posterior longitudinal ligament lesion was possible, and the complicated structures could be understood more easily than with other conventional methods. When surgical simulation was performed in the workstation, the ossification of the posterior longitudinal ligament lesion was removed sufficiently on arbitrarily reconstructed view in the spinal canal. When the viewpoint then was changed to the approaching side, the location and dimension of the removed area were determined. In all cases, surgical approach and excision of the ossification of the posterior longitudinal ligament lesion were performed more easily and more precisely than in the surgery with no three-dimensional images. CONCLUSION: Helical computed tomography with three-dimensional, multiplanar reconstruction would be a valuable tool for evaluation and surgical simulation of ossification of the posterior longitudinal ligament lesion by enhancing the accuracy of the surgical procedure.
Authors:
K Hasegawa; T Homma
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Spine     Volume:  22     ISSN:  0362-2436     ISO Abbreviation:  Spine     Publication Date:  1997 Mar 
Date Detail:
Created Date:  1997-06-05     Completed Date:  1997-06-05     Revised Date:  2009-07-09    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  537-43     Citation Subset:  IM    
Affiliation:
Department of Orthopaedic Surgery, Niigata University School of Medicine, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Evaluation Studies as Topic
Female
Humans
Image Processing, Computer-Assisted / methods*
Male
Middle Aged
Ossification of Posterior Longitudinal Ligament / pathology,  radiography*,  surgery*
Reproducibility of Results
Thoracic Vertebrae / radiography,  surgery
Tomography, X-Ray Computed / methods*,  standards

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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