The greatest concern after metal-on-metal hip resurfacing may be the development of metallosis. Metallosis is an adverse tissue reaction to the metal debris generated by the prosthesis and can be seen with implants and joint prostheses. The reasons patients develop metallosis are multifactorial, involving patient, surgical, and implant factors. Contributing factors may include component malposi...

OBJECTIVES To examine how comorbid diseases (cardiovascular diseases, hypertension, diabetes, cancer, pulmonary diseases, depression, psychotic disorders and neurodegenerative diseases) affect survival of hip and knee replacements. METHODS Data for this register-based study were collected by combining data from five nationwide health registers. 43 747 primary total hip and 53 007 primary tota...

BACKGROUND There is no universal hip implant suitably fills all femoral types, whether prostheses of porous short-stem suitable for Hip Arthroplasty is to be measured scientifically. METHODS Ten specimens of femurs scanned by CT were input onto Mimics to rebuild 3D models; their *stl format dataset were imported into Geomagic-Studio for simulative osteotomy; the generated *.igs dataset were i...

Late infections with Actinomyces israelii have been described for prosthetic hip joints but not in association with intravenous drug use. We present a case of a 43-year-old intravenous drug user who developed A. israelii infection in connection with a hip prosthesis 11 years after implantation, and we review four previously reported cases of Actinomyces prosthetic joint infections.

This case report describes a patient who had a metal-on-metal hip prosthesis implanted 37 years ago. The hip function and X-ray are presented. The levels of cobalt and chromium ions in blood are analyzed and found to be about 40 times higher than normal. Consequences are discussed.

Total hip arthroplasty (THA) is currently one of the most widely performed procedures in orthopedic practice. Over recent years, THA gained much improvement in terms of prosthesis design, availability of suitable component materials and manufacturing techniques, and a better understanding of hip mechanics. In a previous study, we reported results at a mean 3.2 years following implantation of th...

There is increasing recognition that decision modelling is central to health technology assessment and, in particular, to analyses to support formal decision making regarding the funding of the use of new technologies. In part, the key role of decision analysis stems from the need to handle multiple sources of uncertainty in the available evidence. The use of probabilistic decision analysis is ...

UNTIL recent years, patients with osteoarthritis and rheumatoid arthritis had little hope of effective treatment for their painful knees, whereas operations had been developed which could relieve pain in the hip. Arthroplasty of the hip is a standard operation with predictable results. Patients have unfortunately, though not surprisingly, come to expect a similar solution for their arthritic kn...

Subluxation and dislocation following hip arthroplasty is a well known complication. It can be due to a number of reasons varying from malrotation of the component, operative approach, previous surgery, previous stroke, loosening and high wear rates of prosthesis, infection to even patient behaviour. In this study, an unusual cause of subluxation of the hip caused by impinging tissue prolapsed ...