Comparing Load-Sharing Miniplate and Load-Bearing Plate Fixation in Atrophic Edentulous Mandibular Fractures

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Michelle Seu ◽  
Hossein E. Jazayeri ◽  
Joseph Lopez ◽  
Nima Khavanin ◽  
Isabel V. Lake ◽  
...  
Keyword(s):  
Plate Fixation ◽  
Load Sharing ◽  
Mandibular Fractures ◽  
Load Bearing ◽  
Bearing Plate

Mandible Fractures

2019 ◽  
pp. 553-580
Author(s):  
Yeshaswini Thelekkat ◽  
Warren Schubert
Keyword(s):  
Treatment Options ◽  
Inferior Alveolar Nerve ◽  
Early Mobilization ◽  
Load Sharing ◽  
Surgical Anatomy ◽  
Mandibular Fractures ◽  
Load Bearing ◽  
Form And Function ◽  
Mandible Fractures ◽  
And Function

This chapter summarizes the treatment options for different fractures of the mandible with emphasis on early mobilization and restitution of form and function. Emphasis in the management of mandibular fractures includes the establishment of the premorbid occlusion, surgical anatomy, the course of the inferior alveolar nerve, and biomechanics of the mandible. The principles of plating and the concepts of load-sharing and load-bearing osteosynthesis have also been discussed so that the reader will better understand the application of each in different fracture situations. The chapter concludes by briefly describing the complications of mandible fractures and their management.

scholarly journals Failed Fixation in Atrophic Mandibular Fractures: The Case against Miniplates

2011 ◽  
Vol 4 (3) ◽  
pp. 145-150 ◽  
Author(s):  
Matthew J. Madsen ◽  
George M. Kushner ◽  
Brian Alpert
Keyword(s):  
Internal Fixation ◽  
Patient Management ◽  
Mandibular Fractures ◽  
Medical Problems ◽  
Difficult Patient ◽  
Load Bearing ◽  
Rigid Internal Fixation ◽  
Improved Outcomes ◽  
Edentulous Mandible

Despite advances in the treatment of the fractured atrophic edentulous mandible, treatment continues to be difficult. Patient management is more complicated due to patients often being elderly with more complex medical problems. Rigid internal fixation has greatly improved outcomes with shorter treatment times, yet a consensus has yet to be reached regarding which method yields the most predictable results. Options include using small miniplates to larger reconstruction plates. Although each method has advantages, we present our experience with retreatment of failed miniplate fixation using load-bearing reconstruction plates of fractured atrophic edentulous mandibles.

Locking Plate System Versus Standard Plate Fixation in the Management of Mandibular Fractures

2017 ◽  
Vol 28 (6) ◽  
pp. 1456-1461 ◽  
Author(s):  
Patiguli Wusiman ◽  
Julaiti Tuerxun ◽  
Buhiliqiemu Yaolidaxi ◽  
Adili Moming
Keyword(s):  
Locking Plate ◽  
Plate Fixation ◽  
Mandibular Fractures ◽  
System Versus ◽  
Standard Plate ◽  
Locking Plate System ◽  
Plate System

The Effect of a Fatigue Failure on the Wellhead Ultimate Load Capacity

2012 ◽  
Author(s):  
Lorents Reinås ◽  
Morten Sæther ◽  
Bernt Sigve Aadnøy
Keyword(s):  
Fatigue Fracture ◽  
Fatigue Failure ◽  
North Sea ◽  
Ultimate Load ◽  
Load Capacity ◽  
Load Sharing ◽  
External Loading ◽  
Structural Members ◽  
Ultimate Load Capacity ◽  
Load Bearing

A subsea well will experience external loading during drilling operations that can lead to the development of a fatigue fracture in the primary load bearing structural members of the upper well construction. Such a fatigue fracture can occur at several fatigue hotspots which all are located in the upper part of a subsea well. There are two main load sharing structural members; the outer tubular string named the conductor (structural) casing and the next tubular string named the surface casing. Both these strings have a circumferential load bearing weld close to the top. The load sharing between these 2 tubular strings are affected by the supported weight from further tubular strings placed inside the well. This paper discusses the residual ultimate load capacity of a typical North Sea subsea well assuming that a fatigue fracture has developed. The discussion is based on FEM analysis results where a fully developed fatigue fracture has been introduced to the analytical model of a typical well either to the conductor part of the well or to the surface casing string. Then the residual ultimate load capacity is evaluated assuming a fully developed fatigue fracture. Evaluations presented herein can be important and necessary tools in considering the consequences of a possible fatigue failure of a subsea well. A reduction in ultimate load capacity due to a fatigue fracture may reduce the safety margin should an accidental or extreme loading occur. The results indicate that the location of the potential fatigue failure is important when assessing the residual ultimate load capacity. If the factored fatigue life of a subsea well is approaching its limit the presence of a fatigue fracture should be assumed. The most prudent approach would then be to perform a permanent P&A operation of the well. Planning of such operations should comprehend the possibility of reduced structural capacity of the well due to a fatigue fracture. This paper also discusses the results in an operational context. The applied methodology is outlined and illustrative results are presented from a typical North Sea well.

Load Sharing, not Load Bearing Plates: Lessons Learned from Failure of Rib Fracture Stabilization

2016 ◽  
Vol 82 (1) ◽  
pp. 15-17 ◽  
Author(s):  
Tareq G. Sawan ◽  
Terry P. Nickerson ◽  
Cornelius A. Thiels ◽  
Johnathon M. Aho ◽  
William W. Cross ◽  
...  
Keyword(s):  
Load Sharing ◽  
Lessons Learned ◽  
Rib Fracture ◽  
Load Bearing ◽  
Fracture Stabilization

scholarly journals Soft Tissue Coverage for Mandibular Fractures Using Two Miniplates

2012 ◽  
Vol 5 (4) ◽  
pp. 253-254
Author(s):  
Ajul Shah ◽  
Anup Patel ◽  
Derek Steinbacher
Keyword(s):  
Soft Tissue ◽  
Plate Fixation ◽  
Mandibular Fractures ◽  
Soft Tissue Coverage ◽  
Major Contributor ◽  
Fixation Technique ◽  
Mandibular Symphysis ◽  
Surgical Exposure ◽  
Two Miniplates

Recent reports have raised the concern that the two miniplate fixation technique for mandibular symphysis and body fractures may lead to greater complications than previously thought. However, it is possible that the surgical exposure and methods of soft tissue closure may be a major contributor to plate exposure. In this article, we detail a technique for vascularized tissue coverage of the hardware used to repair these mandibular fractures. We believe that this soft tissue coverage is crucial for minimizing complications associated with plate fixation.

scholarly journals Caudal mandibular fracture repair using three-dimensional printing, presurgical plate contouring and a preformed template to aid anatomical fracture reduction

2018 ◽  
Vol 4 (2) ◽  
pp. 205511691879887 ◽  
Author(s):  
Peter Southerden ◽  
Duncan M Barnes
Keyword(s):  
Stainless Steel ◽  
Plate Fixation ◽  
Three Dimensional ◽  
3D Models ◽  
Fracture Repair ◽  
Mandibular Fractures ◽  
Rigid Fixation ◽  
Patient Morbidity ◽  
Drill Holes ◽  
Mini Plate

Case summary Two cats were presented with mandibular fractures following head trauma. Following a CT scan, both were diagnosed with fractures of the ramus. The CT scans were used to print three-dimensional (3D) models of the mandibular fractures, which were used to pre-contour stainless steel mini-plates. These were fixed to the models and the screw positions used to produce a stainless steel template. The template was used as a pattern during surgery to drill holes in the ramus so that the pre-contoured mini-plates could be fixed in the exact same position as they had been on the 3D model. The fractures healed in both cats achieving normal jaw function and occlusion. Relevance and novel information Conventional techniques used to treat caudal mandibular fractures in cats, such as maxillomandibular fixation and bignathic encircling and retaining device (BEARD), are associated with significant patient morbidity and postoperative complications. Internal rigid fixation is difficult because of small bone size, requirement for considerable plate contouring and difficulty in achieving accurate anatomical reduction of caudal mandibular fractures. These are the first reported cases of mini-plate fixation of caudal mandibular fractures in cats using 3D models, pre-contouring of bone plates and the use of a template to facilitate accurate plate positioning, which may provide an alternative technique suitable for fixing caudal mandibular fractures in cats.

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