🔍 Key Findings
- Transcortical fracture (TCF) rate increased significantly with a 10° screw insertion angle compared to coaxial insertion (12.5% at 650 rpm, 17.5% at 1350 rpm)
- No TCFs occurred when screws were inserted coaxially at either speed (0° at 650 or 1350 rpm)
- Screw insertion speed alone did not increase TCF risk if the angle was correct (0°), but higher speeds increased TCF risk when screws were off-axis
- Hand-insertion of screws at 10° angle resulted in a lower TCF rate (3.75%) compared to powered insertion
- Angle deviation was the most significant factor in TCF formation, more than speed
- Authors recommend slow, coaxial screw insertion to reduce TCF risk
- Model used cadaveric canine tibiae, and a standardized jig and drill press to control insertion angle and speed
- This study supports clinical recommendations to avoid off-axis screw insertion during TPLO and similar procedures
Simini Surgery Review Podcast
🔍 Key Findings
- Transcortical fracture (TCF) rate increased significantly with a 10° screw insertion angle compared to coaxial insertion (12.5% at 650 rpm, 17.5% at 1350 rpm)
- No TCFs occurred when screws were inserted coaxially at either speed (0° at 650 or 1350 rpm)
- Screw insertion speed alone did not increase TCF risk if the angle was correct (0°), but higher speeds increased TCF risk when screws were off-axis
- Hand-insertion of screws at 10° angle resulted in a lower TCF rate (3.75%) compared to powered insertion
- Angle deviation was the most significant factor in TCF formation, more than speed
- Authors recommend slow, coaxial screw insertion to reduce TCF risk
- Model used cadaveric canine tibiae, and a standardized jig and drill press to control insertion angle and speed
- This study supports clinical recommendations to avoid off-axis screw insertion during TPLO and similar procedures
Simini Surgery Review Podcast
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