Single Versus Dual Headless Compression Screw Fixation of Scaphoid Nonunions: A Biomechanical Comparison.

Luke T Nicholson,Kristen M Sochol,Ali Azad,Ram Kiran Alluri,J Ryan Hill,Alidad Ghiassi

Hand (New York, N.Y.)（2022）

Cited 2|Views2

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Abstract

Single- and double-screw fixation constructs in a cadaveric scaphoid nonunion model demonstrate similar construct stiffness, load to failure, and load to 1- and 2-mm displacement. Modes of failure may differ between constructs and represent an area for further study. The theoretical benefit of dual-screw fixation should be weighed against the morphologic limitations to placing 2 screws in a scaphoid nonunion.

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Key words

anatomy,basic science,biomechanics,diagnosis,fracture/dislocation,scaphoid,specialty,surgery,trauma,wrist

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