Failure mechanism of the all-polyethylene glenoid implant
نویسندگان
چکیده
منابع مشابه
Biomechanical Evaluation of All-Polyethylene Pegged Bony Ingrowth Glenoid Fixation Techniques on Implant Micromotion.
Newer glenoid components that allow for hybrid cement fixation via traditional cementation of peripheral pegs and bony ingrowth into an interference-fit central peg introduce the possibility of long-term biological fixation. However, little biomechanical work has been done on the initial stability of these components and the various fixation options. We conducted a study in which all-polyethyle...
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INTRODUCTION: Loosening of glenoid components in total shoulder arthroplasty is a common clinical problem which can necessitate revision surgery. The mechanism of loosening is poorly understood and may be related to factors including implant design, component fixation techniques, and to tensile stresses at the interfaces. We are unaware of any studies that have examined the fundamental aspects ...
متن کاملThe Failure Mechanism of Cemented Glenoid Designs: An In-Vitro and Finite Element Study
Introduction: The problem of glenoid loosening in total shoulder replacement (TSA) is not a new one. Surprisingly, it is still not clear which part of the fixation fails and where this failure initiates. Published works have used FE modelling, radiographs and in-vitro tests to assess the superiority of implants and design features [1,2,3,4,5]. All studies thus far have been unable to observe or...
متن کاملGenetic and biomechanical determinants of glenoid version: implications for glenoid implant placement in shoulder arthroplasty.
SUMMARY The universally accepted method of measuring glenoid version to determine proper alignment of the glenoid component during total shoulder arthroplasty does not account for the complex and variable relationship of the glenoid vault with the scapular body. Existing evidence indicates that the glenoid and the scapular body development are controlled by independent genetic and biomechanical...
متن کاملTotal shoulder arthroplasty for glenohumeral arthritis associated with posterior glenoid bone loss: results of an all-polyethylene, posteriorly augmented glenoid component.
BACKGROUND Posterior glenoid bone loss is commonly encountered in total shoulder arthroplasty (TSA). The purpose of our study is to report the clinical and radiographic findings of patients with a minimum of 2 years' follow-up treated with an all-polyethylene, augmented glenoid component. METHODS Twenty-two shoulders with posterior glenoid bone loss were treated by a single surgeon. All under...
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ژورنال
عنوان ژورنال: Journal of Biomechanics
سال: 2010
ISSN: 0021-9290
DOI: 10.1016/j.jbiomech.2009.10.019