The results of a prospective multicentre study of the Herbert differential pitch bone screw used to treat 50 scaphoid fractures and non-unions are presented. All fresh fractures and four of the five fracture-dislocations united, an overall union rate of 92%. Although the technique is demanding, the Herbert screw can achieve excellent results in the management of scaphoid fractures.
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Bunker et al. (1987) studied this question.