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A Biomechanical Analysis of Intrascaphoid Compression Using the 3.00 mm Synthes Cannulated Screw and Threaded Washer: an in vitro Cadaveric StudyFrom the Bioengineering Research Laboratory, Hand and Upper Limb Centre, St Josephs Health Centre, London Ontario, Canada Correspondence: Dr David G Chess, Hand & Upper Limb Center, St Joseph's Health Centre, 268 Grosvenor Street, London, Ontario, Canada N6A 4L6. This study evaluated the compressive capabilities of the 3.0mm 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 3.0mm 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.
Journal of Hand Surgery (British and European Volume), Vol. 26, No. 1,
22-24 (2001) |
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