نتایج جستجو برای: ceramic head fracture

تعداد نتایج: 279888  

2013
Francesco Traina Marcello De Fine Alberto Di Martino Cesare Faldini

Ceramic bearing surfaces are increasingly used for total hip replacement, notwithstanding that concern is still related to ceramic brittleness and its possible mechanical failure. The aim of this systematic review is to answer three questions: (1) Are there risk factors for ceramic component fracture following total hip replacement? (2) Is it possible to perform an early diagnosis of ceramic co...

Journal: :The Journal of bone and joint surgery. British volume 2009
S Salih V A Currall A J Ward T J S Chesser

Surgeons remain concerned that ceramic hip prostheses may fail catastrophically if either the head or the liner is fractured. We report two patients, each with a ceramic-on-ceramic total hip replacement who sustained high-energy trauma sufficient to cause a displaced periprosthetic acetabular fracture in whom the ceramic bearings survived intact. Simultaneous fixation of the acetabular fracture...

Journal: :Eklem hastaliklari ve cerrahisi = Joint diseases & related surgery 2013
Halil Ibrahim Bekler Yiğit Erdağ Murat Ozşahin

In this article, we present a 48-year-old female case who had an unsuccessful previous forte ceramic-on-ceramic total hip arthroplasty for early coxarthrosis secondary to acetabular dysplasia. She had fracture and protrusion of the ceramic liner through the titanium acetabular shell without any apparent trauma, possibly resulting from the mistake during the implantation of the ceramic liner int...

2012
Mohammad H Fard-Aghaie Mustafa Citak Joao Correia Carl Haasper Thorsten Gehrke Daniel Kendoff

BACKGROUND AND PURPOSE Ceramic heads are widely used in modern total hip arthroplasty (THA). Although a rare complication, fractures of ceramic heads are described in the literature, evoking uncertainties regarding the in vivo stability of this material, especially when impaction of a fractured ceramic head can lead to disastrous results. METHODS In this case report, we present a fracture of ...

Ceramic bearing surfaces are being increasingly used in young patients undergoing total hip arthroplasty. However,failures have been reported including fractures even with the newer third generation ceramics. The recommendedtreatment for fracture of ceramic bearing surfaces is complete synovectomy and revision total hip arthroplasty.However, disappointing results have also bee...

ژورنال: مجله دندانپزشکی 2009
امتی شبستری, قاسم, باقرپور, رضا, حاج میر آقا, حبیب, شهابی, سیما,

Background and Aims: Metal-free and fiber-reinforced composite (FRC) restorations have drawn considerable attention and interest in recent years for restoring in the posterior area due to their improved esthetics. Fracture resistance is one of the most important mechanical properties of materials because of 500-600 N load of occlusion. The restorations should tolerate this load. The purpose of ...

2016
Philippe Hernigou François Roubineau Charlie Bouthors Charles-Henri Flouzat-Lachaniette

Based on the exceptional tribological behaviour and on the relatively low biological activity of ceramic particles, Ceramic-on-Ceramic (CoC) total hip arthroplasty (THA) presents significant advantagesCoC bearings decrease wear and osteolysis, the cumulative long-term risk of dislocation, muscle atrophy, and head-neck taper corrosion.However, there are still concerns regarding the best techniqu...

Journal: :Stomatologija 2008
Antra Ragauska Peteris Apse Vladimirs Kasjanovs Liga Berzina-Cimdina

OBJECTIVE The aim of this study was to assess the resistance of fracture of mesio-occlusal-distal (MOD) ceramic inlays and composite fillings in premolars and to compare fracture modes between the groups. MATERIAL AND METHODS Twenty seven extracted intact human premolars were selected and divided into three groups: I - intact teeth (control group), II - MOD cavities restored with indirect cer...

2010
Jong-Wook Yoon Sung-Hun Kim Jai-Bong Lee Jung-Suk Han Jae-Ho Yang

PURPOSE The objective of this study was to evaluate fracture strength of collarless metal-ceramic FPDs according to their metal coping designs. MATERIALS AND METHODS Four different facial margin design groups were investigated. Group A was a coping with a thin facial metal collar, group B was a collarless coping with its facial metal to the shoulder, group C was a collarless coping with its f...

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