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Postoperative evaluation of transpedicular screws with computed tomography
1Marmara University Faculty of Medicine, Department of Orthopaedics and Traumatology, Istanbul, Turkey.
Orthopaedic Review
|June 1, 1994
Summary
Transpedicular screw fixation accuracy was evaluated using computed tomography (CT) scans. Most screws were accurately placed, with few complications despite minor misplacements, indicating a safe procedure.
Area of Science:
- Orthopedic Surgery
- Neurosurgery
- Radiology
Background:
- Transpedicular screw fixation is a common spinal stabilization technique.
- Accurate screw placement is crucial for surgical success and minimizing complications.
Purpose of the Study:
- To assess the accuracy of pedicular screw placement in spinal fusion surgery.
- To evaluate the incidence and consequences of screw misplacement.
Main Methods:
- Postoperative computed tomography (CT) scans were used to evaluate screw placement.
- 379 pedicular screws were analyzed in 75 patients undergoing transpedicular screw fixation.
Main Results:
- 90% of screws were correctly placed within the pedicle.
- 3% of screws were misplaced medially into the spinal canal, with only one causing symptoms.
- 5% of screws were misplaced laterally, and 2% superiorly, with no major complications.
Conclusions:
- Transpedicular screw fixation demonstrates high accuracy.
- Minor screw misplacements are common but rarely lead to significant complications.