03653nam a22005417a 4500
171213s20172017 xxu||||| |||| 00| 0 eng d
0363-5023
Ovid MEDLINE(R)
28052832
Fixation of Regan-Morrey Type II Coronoid Fractures: A Comparison of Screws and Suture Lasso Technique for Resistance to Displacement.
Journal of Hand Surgery - American Volume. 42(1):e11-e14, 2017 Jan
J Hand Surg [Am]. 42(1):e11-e14, 2017 Jan
The Journal of hand surgery
2017
FY2017
2017-12-13
Available in print through MWHC library: 1999 - 2002, Available online from MWHC library: 1995 - present
CLINICAL RELEVANCE: Clinical studies have reported a higher rate of failure after screw fixation compared with suture lasso fixation; however, this study demonstrated a greater stiffness and load to failure after screw fixation of type II coronoid fractures. Screw fixation may provide a stronger fixation construct for fractures of adequate size to support a screw. Further studies may be warranted to assess the importance of securing the anterior capsule to the coronoid tip when using a suture lasso construct because this may affect the stability of the elbow after fixation.
CONCLUSIONS: Screw fixation was biomechanically superior to fixation using a suture lasso technique. For coronoid fractures in which screw or suture fixation is feasible, screw fixation may provide greater resistance to displacement of the coronoid compared with a suture lasso technique.
Copyright (c) 2017 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.
METHODS: We performed a biomechanical study using 10 pairs of fresh-frozen cadaveric elbows. A transverse osteotomy at the midpoint of the coronoid height was created to simulate a Regan-Morrey type II coronoid fracture. The specimens were randomized to screw fixation or suture lasso fixation. The load to failure and stiffness were then measured using a materials testing machine.
PURPOSE: The aim of this study was to compare the load to failure and stiffness achieved in coronoid fractures treated with a posterior-to-anterior screw versus a suture lasso technique.
RESULTS: Screw fixation provided greater strength and stiffness than suture lasso fixation. Mean load to failure was 405 N in the screw fixation group compared with a load to failure of 207 N for suture fixation. Screw fixation resulted in a mean stiffness of 284 kPa/mm compared with 119 kPa/mm after suture fixation.
English
*Bone Screws
*Elbow Joint/in [Injuries]
*Elbow Joint/su [Surgery]
*Fracture Fixation, Internal/is [Instrumentation]
*Suture Techniques
*Ulna Fractures/su [Surgery]
Biomechanical Phenomena
Cadaver
Equipment Failure Analysis
Humans
Materials Testing
Curtis National Hand Center
MedStar Union Memorial Hospital
Orthopaedic Surgery
Comparative Study
Journal Article
Iannuzzi, Nicholas P
Murphy, Michael S
Paez, Adrian G
Parks, Brent G
Iannuzzi NP, Murphy MS, Paez AG, Parks BG
https://dx.doi.org/10.1016/j.jhsa.2016.11.003
https://dx.doi.org/10.1016/j.jhsa.2016.11.003
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2017-12-13
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28052832
28052832
2017-12-13
2017-12-13
ART
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