The initial solid fixation of an uncemented acetabular component affects the amount of bone ingrowth. We had several problems with broken screws in cases of acetabular revision. In recent years, the development of uncemented components without screws has attempted to improve these problems. We started to use "press-fit"-type acetabular shells in November 1996. Our thirty cases undergoing 2 mm under-reaming show good initial stability. The aim of our biomechanical study was to assess the most suitable degree of under-reaming of the bony acetabulum for the implantation of an uncemented hemispherical porous coated component.
We report the case of a patient who underwent acrylic hemi-arthroplasty of the hip and survived 45 years without revision. The patient had undergone hemi-arthroplasty of the hip at the age of 17 years following failure of a previous hemi-arthroplasty at the age of 12 years. We saw her 45 years later and carried out physical examination, standard radiographs of the hip as well as computed tomography. In addition, we reviewed the literature concerning the acrylic prosthesis and discussed the reasons for long-term durability.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.