Defining the Mean Angle of Diaphyseal Long Bone Nonunions—Does Shear Prevail?

Conclusions: This study demonstrates the mean angle of diaphyseal nonunions from long bones of the lower limb approaches 45 degrees. This is noted in all types of fractures and is irrespective of anatomic location or sex. This confirms the hypothesis that shear is likely to play a role in the development of a nonunion. This study provides further evidence that nonunions occur primarily because of mechanical instability. Level of Evidence: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
Source: Journal of Orthopaedic Trauma - Category: Orthopaedics Tags: Original Article Source Type: research