Vertically Oriented Femoral Neck Fractures: A Biomechanical Comparison of 3 Fixation Constructs.

ABSTRACT:

Objectives

To compare the static and dynamic mechanical properties of a modified crossed cannulated screw (CS) configuration, the inverted triangle (IT) cannulated screw configuration, and a compression hip screw (CHS) with derotation screw in Pauwels type III femoral neck fractures.

Methods

Thirty synthetic femora were divided into 3 groups, and vertical femoral neck osteotomies were made. Ten osteotomized femora were fixed with a CS configuration, 10 were fixed with 3 parallel screws in an IT configuration, and the remaining 10 osteotomized femora were fixed with a CHS construct. All groups were tested using a cyclic (up to 15,000 load cycles) axial loading protocol, and survivors were statically loaded to failure. Cycles to failure, load to failure, and stiffness were cal

SUBMITTER: Johnson JP 

PROVIDER: S-EPMC6137809 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature