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Pedicle-Screw Fixation in the Lumbar Spine
1Department of Orthopaedic Surgery, Jefferson Medical College of Thomas Jefferson University, Philadelphia.
The Journal of the American Academy of Orthopaedic Surgeons
|October 1, 1995
Summary
Pedicle-screw fixation in the lumbar spine is reviewed, including its biomechanics, risks, and evidence. These devices are investigational, posing potential risks to patients.
Area of Science:
- Spine Surgery
- Orthopedic Biomechanics
- Medical Device Regulation
Background:
- Pedicle-screw fixation is a common technique in lumbar spine surgery.
- The use of these devices has generated significant debate regarding their safety and efficacy.
- Current regulatory status classifies them as investigational devices.
Purpose of the Study:
- To provide a comprehensive perspective on lumbar pedicle-screw fixation.
- To objectify the ongoing debate surrounding these devices.
- To review biomechanics, complications, and evidence for specific applications.
Main Methods:
- Literature review and synthesis of existing scientific evidence.
- Analysis of biomechanical principles related to pedicle-screw fixation.
- Examination of Food and Drug Administration (FDA) classifications and implications.
Main Results:
- The article discusses the development and biomechanics of pedicle-screw fixation.
- Potential complications associated with the procedure are outlined.
- The scientific evidence supporting its use in specific lumbar disorders is evaluated.
Conclusions:
- Lumbar pedicle-screw fixation devices are classified as investigational (Class III) by the FDA.
- These devices have not been proven safe and effective.
- Their use carries potential risks that warrant careful consideration.