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BMC Musculoskeletal Disorders

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Open Access 01-12-2018 | Technical advance

Introduction of a guide based on a femoral neck section for fixation with multiple screws: a cadaveric study

Authors: Qiuliang Zhu, Bin Xu, Jinzhu Lv, Maohua Yan

Published in: BMC Musculoskeletal Disorders | Issue 1/2018

Abstract

Background

The design and application of assisted instrumentation for internal fixation of femoral neck fractures with multiple screws are still evolving. A novel guide based on a femoral neck section was designed to improve the accuracy of screw placement, and its efficacy was evaluated.

Methods

A guide based on a femoral neck section was designed for assisted fixation of femoral neck fractures with multiple screws. Femoral specimens from 10 adults (20 femurs) underwent assisted internal fixation for a femoral neck fracture with 3 cannulated screws using the new guide technique or conventional technique. The accuracy of screw orientation and entry point, the accuracy of optimal screw positioning, and drilling attempts, operative time, and fluoroscopy time were recorded.

Results

Among all 20 specimens, 60 screws were inserted successfully. Screw parallelism, operative time, and fluoroscopy time showed no statistical difference between the new guide technique and conventional technique (P > 0.05). The accuracy of optimal screw positioning was determined by the contained screw area ratio, distance between screws, distance from the centre of the femoral neck section, distance between screws and the femoral neck cortex, and Drilling attempts were statistical significantly better (data in the first three were larger and in the latter two was smaller) with the new guide technique, than with conventional technique (P < 0.05).

Conclusions

This new, two-dimensional, fluoroscopy-assisted, percutaneous guide technique enables accurate and optimal screw positioning in internal fixation of femoral neck fractures, compared with conventional technique.

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Title: Introduction of a guide based on a femoral neck section for fixation with multiple screws: a cadaveric study
Authors: Qiuliang Zhu
Bin Xu
Jinzhu Lv
Maohua Yan
Publication date: 01-12-2018
Publisher: BioMed Central
Published in: BMC Musculoskeletal Disorders / Issue 1/2018
Electronic ISSN: 1471-2474
DOI: https://doi.org/10.1186/s12891-018-2026-6

At a glance: The STEP trials

Springer Medicine

Introduction of a guide based on a femoral neck section for fixation with multiple screws: a cadaveric study

Abstract

Background

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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