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PubMed · 8326430

Distal locking screw insertion using a cannulated drill bit: technical note.

E F Barrick
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Abstract

A modified freehand method using a cannulated drill bit for the insertion of distal locking screws for interlocking intramedullary nails is described. It should be useful to introduce surgeons to interlocking and to aid those who are not comfortable with the freehand method.

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Bone ScrewsFemoral FracturesFracture Fixation, IntramedullaryHumansTibial FracturesJournal Article

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E F Barrick. 1993. Distal locking screw insertion using a cannulated drill bit: technical note.. https://doi.org/10.1097/00005131-199306000-00009

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Correction of cervical kyphosis using pedicle screw fixation systems.

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PubMed1999

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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 test 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.

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PubMed1999

Anatomic evaluation of two different techniques for the percutaneous insertion of pedicle screws in the lumbar spine.

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