نتایج جستجو برای: bearing fractures
تعداد نتایج: 133354 فیلتر نتایج به سال:
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...
The ultramafic rocks from the Takht-e-Soleyman metamorphic complex, in Precambrian age, are classified as serpentinized metaperidotites and serpentinites, based on degree of serpentinization. Serpentine forms more than 90 volume% of the serpentinites. On the basis of serpentine polymorphs, textural relations and micro-structure features, variety of serpentinites are determined as massive serpen...
AIM This study aims to clarify, according to our experience, the correct surgical sequence which should be followed in order to treat double mandibular fractures. MATERIAL OF STUDY From January 2007 to January 2010, we have conducted a retrospective study on a sample of patients operated on in our department. We include only those cases in which the jaw was fractured in 2 places, in particula...
Coronal fractures of the femoral condyle (Hoffa fractures) are uncommon injuries that have a better outcome when treated surgically. We report a series affive Hoffa fractures (including one nonunion) treated at a Levell trauma center by one surgeon employing a protocol ofopen reduction and internal fIxation with lag screws through a formal parapatellar approach. Postoperatively, all patients be...
Weak and osteoporotic bones in old age are an increasing cause of mortality and painful physical impairment of the elderly, especially in the western world. Bone mineral accrual during childhood and adolescence is thought to play a vital role in preventing osteoporosis. Identifying and optimizing the factors influencing peak bone mass is thus important for the prevention of osteoporosis and rel...
Background There is no established principle regarding weight-bearing in conservative and operative management of fifth metatarsal base fractures. Methods We reviewed 86 patients with acute fifth metatarsal base fractures. Conservatively treated late or early weight-bearing patients were assigned to Group A or C, respectively. Operatively treated late or early weight-bearing patients were ass...
conclusions in our study, we treated this rare fracture successfully using a modified swashbuckler approach and found it to be a good approach for such fractures as compared to the conventional approach. case presentation a 32-year-old male sustained a bicondylar hoffa fracture of the right femur which was treated by open reduction and internal fixation using a modified swashbuckler approach. a...
INTRODUCTION Immediate weight-bearing following osteosynthesis of proximal tibial fractures is traditionally not allowed due to fear of articular fracture collapse. Anatomically shaped locking plates with sub-articular screws could improve stability and allow greater loading forces. The purpose of this study was to investigate if immediate weight-bearing can be allowed following locking plate o...
Cases of fractured mobile unicompartmental knee bearings have recently been reported. The purpose of this study was to understand the mechanics behind these fractures and to examine the influence of different design modifications. A parametric finite element model was used to examine the influence of different geometrical factors on the stresses within the bearing. Crack initiation occurred cli...
PURPOSE To study clinical and mechanical factors that predispose to failure of interlocking nails. METHODS Between October 1996 and December 2002, 286 femoral fractures, 211 tibial fractures, and 47 humeral fractures were repaired using variously designed interlocking nails. Fracture pattern, level and site, nail size and type, weight bearing after nailing, and union status were reviewed afte...
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