A biomechanical analysis of intrascaphoid compression using the 3.00 mm Synthes cannulated screw and threaded washer: an in vitro cadaveric study.
This study evaluated the compressive capabilities of the 3.0 mm Synthes cannulated screw and threaded washer. A transverse osteotomy was performed at the waist of eight cadaveric scaphoids and a custom-designed load cell was inserted before internal fixion with a 3.0 mm cannulated screw and threaded washer. The mean intrascaphoid compression achieved was 108 (SD, 60) N. This compressive force is comparable to that produced by standard cortical screws.
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I K
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Bioengineering Research Laboratory, London, Ontario, Canada.
King
G J
GJ
Patterson
S D
SD
Johnson
J A
JA
Chess
D G
DG
D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D001863:Bone Screws; D004867:Equipment Design; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D021361:Scaphoid Bone / Q000293:injuries*