Abstract Background There has been an evolution in cementless total hip arthroplasty (THA) with newer short stem designs aimed to preserve metaphyseal bone stock and facilitate implantation through minimally invasive approaches. While early subsidence correlated aseptic loosening conventional stems, there is a paucity of data regarding stems. The current study aims report on mid-term clinical o...

BACKGROUND AND PURPOSE Dual-energy X-ray absorptiometry (DXA) analysis of the 7 periprosthetic Gruen zones is the most commonly used protocol to evaluate bone remodeling after the implantation of conventional femoral stems. We assessed the value of DXA after cementless primary total hip arthroplasty (THA) by comparing the effect of progressive shortening of the stem of two femoral implants on p...

BACKGROUND AND PURPOSE We have previously shown that during the first 2 years after total hip arthroplasty (THA), periprosthetic bone resorption can be prevented by 6 months of risedronate therapy. This follow-up study investigated this effect at 4 years. PATIENTS AND METHODS A single-center, double-blind, randomized placebo-controlled trial was carried out from 2006 to 2010 in 73 patients wi...

OBJECTIVE To present the results of a prospective analysis of proximal femoral bone mineral density changes around a hydroxyapatite-coated total hip joint replacement. METHODS 14 patients with osteoarthritis of the hip were enrolled in the study and treated with an uncemented ABG prosthesis. Dual energy X-ray absorptiometry scanning was performed in 9 patients preoperatively, and at 3, 6, 12,...

Background and purpose - The loss of bone mineral in the proximal femur following hip arthroplasty may increase the fracture risk around uncemented stems. We hypothesized that the surgical approach to the hip might influence bone mineral changes around the femoral stem in patients with a femoral neck fracture (FNF). Patients and methods - This was a pre-specified subgroup analysis (n = 51) of a...

Background and Objectives: Cementless total hip arthroplasty leads to an early periprosthetic bone loss, which can impair the osseointegration process lead a femoral implant migration during weight-bearing. An altered aseptic loosening, is most frequent late complication in these surgical procedures. The objective of this study was compare effect alendronate simvastatin prevention loss found os...

BACKGROUND Bone marrow cell profiles are variable after total hip arthroplasty (THA), including variable levels of Stro-1+ and bone morphogenetic protein receptor (BMPRs)+ cells. We investigated the impact of bone marrow cell profiles on changes in periprosthetic bone mineral density (BMD) in uncemented THA patients. MATERIAL AND METHODS Bone marrow aspirates were collected from the metaphyse...

Total Hip Arthroplasty aims at fully recreating a functional hip joint. Over the past years modular implant systems have become common practice and are widely used, due to the surgical options they provide. In addition Big Femoral Heads have also been implemented in the process, providing more flexibility for the surgeon. The current study aims at investigating the effects that femoral heads of...

We treated 34 patients with recurrent dislocation of the hip with a constrained acetabular component. Roentgen stereophotogrammetric analysis was performed to assess migration of the prosthesis. The mean clinical follow-up was 3.0 years (2.2 to 4.8) and the radiological follow-up was 2.7 years (2.0 to 4.8). At the latest review six patients had died and none was lost to follow-up. There were fo...

Economic Analysis Department Reserve Bank of Australia I am grateful to Jacqui Dwyer and David Gruen for their helpful comments and suggestions. I would also like to thank Ashley Lester for his assistance. The responsibility for any remaining errors, of course, lies with the author. The views in this paper are those of the author and do not necessarily reflect the views of the Reserve Bank of A...