منابع مشابه
Corrosion of modular hip prostheses.
Nine uncemented hip prostheses of modular design were revised because of late infection (2 cases), femoral stem loosening or fracture (2), loosening of threaded cups (3) and protrusion of bipolar cups (2). At surgery we found tissue discoloration and macroscopic corrosion in four of the nine prostheses, located at the head-neck junction. Histological examination in most cases showed extensive n...
متن کاملOn Fixation of Hip Prostheses
.........................................................................................7 Introduction....................................................................................9 Femoral revision and allograft impaction ....................................9 Total hip replacement in young patients ...................................10 Hydroxyapatite coating of femoral stems...............
متن کاملCementless Hydroxyapatite Coated Hip Prostheses
More than twenty years ago, hydroxyapatite (HA), calcium phosphate ceramics, was introduced as a coating for cementless hip prostheses. The choice of this ceramic is due to its composition being similar to organic apatite bone crystals. This ceramic is biocompatible, bioactive, and osteoconductive. These qualities facilitate the primary stability and osseointegration of implants. Our surgical e...
متن کاملA Computational Analysis of Squeaking Hip Prostheses
A ceramic-on-ceramic (CoC) hip prosthesis with clearance is modeled as a multibody dynamics system for the purpose of studying hip squeaking. A continuous contact force model provides the intrajoint forces developed at the hip joint. Friction effects due to the relative motion are also considered. A FFT analysis of the audible sounds from CoC hip acceleration is carried out to analyze hip squea...
متن کاملTribology of total hip arthroplasty prostheses
Although total hip arthroplasty (THA) has provided good results for over forty years, the choice of the optimal bearing surface still remains controversial. Tribology is defined as “the branch of science and technology that deals with the study of friction, wear, and lubrication”.1 Tribology is fundamental to the function and long-term survival of orthopaedic implants. With the development of h...
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ژورنال
عنوان ژورنال: ORTHOPAEDICS, TRAUMATOLOGY and PROSTHETICS
سال: 2013
ISSN: 0030-5987
DOI: 10.15674/0030-59872013366-69