The Effect of Capitate Position on Coronal-Plane Wrist Motion after Simulated Four-Corner Fusion

Abstract

Ferreres et al. hypothesized that over-reduction of the capitate on the lunate during four-corner fusion would stretch the extrinsic volar wrist ligaments, resulting in post-operative radial deviation posture of the wrist (1). The objective of this study was to examine the effect of altering the capito-lunate relationship on coronalplane wrist motion after simulated scaphoidectomy and 4CF. We hypothesized that wrist resting posture and radial-ulnar motion would be altered following simulated fusion in an over-reduced position when compared to normal wrists.