INTRODUCTION: Cement augmentation techniques, such as vertebroplasty, are increasingly being used in the treatment of bony fractures. The rise of such procedures, along with the continued use of cement in total joint replacement, have led to increased interest in the behavior of the bone-cement interface. This region is critical in the performance of joint replacement devices and the load trans...

The damage accumulation failure scenario is one of the most prominent ones of cemented THA reconstruction, and involves the accumulation of mechanical damage in materials and interfaces due to repetitive dynamic loading eventually resulting in gross loosening. This study addresses this scenario by combining finite element techniques with the theory of continuum damage mechanics, to analyze the ...

Purpose—It has been shown that a partialvacuum slow-speed system for blending of the liquid and powder components of Simplex-P produces set acrylic bone cement specimens of less than 1 percent porosity with significantly improved uniaxial tensile fatigue lives over regularly mixed cement. However, those tests were conducted using smooth-machined specimens, which may not necessarily be clinicall...

Fretting wear debris generated at the stem–cement interface has nowadays been considered to play an important role in the overall failure of cemented total hip replacement (THR). Those wear debris within a certain size range would transport along bone cement deficiencies to bone tissue, resulting in a significant bone resorption and subsequent aseptic loosening of the femoral component, which i...

Allergy to polymethyl methacrylate bone-cement or its components is unusual. Because of the potential for an inflammatory response in an allergic patient and the possibility of pain and loosening if a cemented implant is used, it is imperative to identify patients with this allergy to modify their treatment. We report the case of an otherwise healthy 60-year-old woman who needed a total knee ar...

INTRODUCTION Aseptic loosening is the commonest cause of failure of total joint replacements. The pathogenesis of this process remains controversial but appears to involve prosthetic migration, joint fluid pressure and the host response to particulate wear debris. The Swedish Hip Registry has shown that the type of bone cement used effects the risk of revision for aseptic loosening. It has been...

Our study looked at the short and medium-term results of a cost-effective technique of bone surface preparation and cement introduction in total knee arthroplasty (TKA). Numerous factors determine the outcome following TKA. Early failure and component loosening have been attributed to inadequate bone-cement and prosthesis-cement interfaces, established at the time of surgery. Various operative ...

Setting properties of bone substitutes are improved using an injectable system. The injectable bone graft substitutes can be molded to the shape of the bone cavity and set in situ when injected. Such system is useful for surgical operation. The powder part of the injectable bone cement is included of β-tricalcium phosphate, calcium carbonate, and dicalcium phosphate and the liquid part contains...

This paper reports the method and mechanism for improving the strength of marl and desert sand utilizing electric arc furnace dust (EAFD), an industrial by-product, in lieu of cement or lime. EAFD was used in conjunction with a small quantity (2%) of cement. The mechanical properties and durability characteristics of marl and sand mixed with 2% cement plus 5-, 10-, 20- or 30%-EAFD, by weight of...

The disrupted function of the hip joint can be restored by means of total hip arthroplasty (i.e. reconstructive surgery of the joint) THA. This is a widely used medical strategy with high succes rates, world wide [1,2]. Among the failure scenarios of THA, aseptic loosening represents the main reason for revision of cemented hip implants [3]. Studies have shown that the two most frequent ways fo...