Τίτλος:
Evaluation of pedicle screw position in thoracic and lumbar spine
fixation using plain radiographs and computed tomography - A prospective
study of 35 patients
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Study Design. This was a prospective study of 35 consecutive patients in
whom pedicle screw position was assessed after surgery, using lateral
radiographs and computed tomography.
Objective. To evaluate the accuracy of plain radiographs and computed
tomography in assessment: of pedicle screw position.
Summary of Background Data. Imaging techniques, such as postoperative
anteroposterior and lateral plain radiographs and computed tomography,
are currently the primary means of assessing pedicle screw placement.
Methods. Postoperative radiographs and computed tomographic scans were
used to evaluate the position of 220 pedicle screws inserted in the
spines of 35 consecutive patients who underwent thoracic and lumbar
spine fusion and instrumentation. No recognized neurologic complication
resulted from pedicle screw placement. Screw position was graded as in,
out, or questionable. All observations were performed independently by
three observers. The authors also analyzed the position of the screws
according to the underlying spinal disease.
Results. More misplaced screws were clearly seen on computed tomographic
scans than on plain radiographs; however, this difference was not
statistically significant. Interobserver differences were not
statistically significant. Intraobserver differences approached
statistical significance when the results of the two tests were
compared.
Conclusions. Although the accuracy of computed tomographic imaging is
better than that of plain radiographs, the difference does not reach
statistical significance. Postoperative use of plain radiographs remains
a reliable method for evaluation of pedicle screw insertion in the
absence of neurologic deficit.
Συγγραφείς:
Sapkas, GS
Papadakis, SA
Stathakopoulos, DP
Papagelopoulos,
PJ
Badekas, AC
Kaiser, JH
Περιοδικό:
Spine Deformity
Εκδότης:
Lippincott, Williams & Wilkins
Λέξεις-κλειδιά:
computed tomography; lumbar spine; pedicle screws; radiographs; thoracic
spine
DOI:
10.1097/00007632-199909150-00011
