SYSTEM FOR IN VITRO PRIMARY STABILITY ANALYZIS OF CEMENTED HIP PROSTHESIS

Cemented versus uncemented femoral components in the ring hip prosthesis.

A prospective, randomised and independently assessed trial of the Ring UPM total hip replacement showed that the quality of the early result was better if the femoral prosthesis was cemented than if it was not. More patients with cemented prostheses were painfree at four months (58% cemented:42% uncemented) and at one year (63% cemented:50% uncemented), but at two years pain relief was equal in...

Asymptomatic Chronic Dislocation of a Cemented Total Hip Prosthesis

Dislocation of a total hip prosthesis is a painful and mentally stressful orthopaedic emergency.1 It may be long-standing and asymptomatic, typically involving the femoral portion.2-4 This report describes a peculiar chronic dislocation of both components of a total hip prosthesis. A 93-year-old female patient, thin and of short stature, had come to our attention for recent onset of lumbar pain...

stability and attraction domains of traffic equilibria in day-to-day dynamical system formulation

در این پژوهش مسئله واگذاری ترافیک را از دید سیستم های دینامیکی فرمول بندی می کنیم.فرض کرده ایم که همه فاکتورهای وابسته در طول زمان ثابت باشند و تعادل کاربر را از طریق فرایند منظم روزبه روز پیگیری کنیم.دینامیک ترافیک توسط یک نگاشت بازگشتی نشان داده می شود که تکامل سیستم در طول زمان را نشان می دهد.پایداری تعادل و دامنه جذب را توسط مطالعه ویژگی های توپولوژیکی تکامل سیستم تجزیه و تحلیل می کنیم.پاید...

Primary Stability of Cemented Tibial Implants

In-vitro Prediction of Cemented and Non-cemented Revision Stem Stability in Impaction Bone Grafting

BONE GRAFTING +*Mak, S Y; *Smith, S D; *Miles, A W +*Centre for Orthopaedic Biomechanics, University of Bath, UK [email protected] INTRODUCTION: Impaction bone grafting (IBG) has been used in revision hip replacement for more than 15 years. The objective is to impact allograft bone chips into the medullary canal to compensate for bone stock loss after failed primary hip replacement. Initial st...