The aim of this review paper is to define the fixation of the cemented stem. Polymethyl methacrylate, otherwise known as "bone cement", has been used in the fixation of hip implants since the early 1960s. Sir John Charnley, the pioneer of modern hip replacement, incorporated the use of cement in the development of low frictional torque hip arthroplasty. In this paper, the concepts of femoral st...

INTRODUCTION Modular femoral implants have become a regular feature of revision hip surgery. However, for a primary hip arthroplasty, such as a femoral neck fracture case, the implant of choice is a standard femoral component, while compelling literature evidence have made osteosynthesis the standard procedure for the vast majority of trochanteric fractures. CASE PRESENTATION We present the c...

Total hip arthroplasty has been utilized for the past 50 years as an effective treatment for degenerative, inflammatory and traumatic disorders of the hip. The design of these implants has generally followed the anatomy of the hip as a ball and socket joint with the femoral head representing the ball and the acetabulum representing the socket. We describe a novel hip arthroplasty design in whic...

Metallosis of the hip is usually defined as aseptic fibrosis, local necrosis, or loosening of the prosthesis secondary to metallic corrosion and release of wear debris.8 It has also been defined as gray discoloration of the tissues of the joint, pain, an effusion, and elevated serum metal levels. Metallosis has been found with stainless steel, titanium, and cobalt chromium alloy femoral prosthe...

OBJECTIVE To determine comparative safety and effectiveness of combinations of bearing surfaces of hip implants. DESIGN Systematic review of clinical trials, observational studies, and registries. DATA SOURCES Medline, Embase, Cochrane Controlled Trials Register, reference lists of articles, annual reports of major registries, summaries of safety and effectiveness for pre-market application...

The treatment of fractures in elderly patients is a big orthopaeadic and socio-economic problem. The number of fractures, especially hip fractures, increases year after year. Approximately 250 hip fracture patients per year are hospitalized in the Orthopaedic-Traumatology Clinic in Niš, which makes nearly 20% of all hospitalized patients. Enormous funds are spent for their treatment, especially...

UNLABELLED The assessment of bone healing and loosening of endoprosthesis material was long the primary indication for postoperative projection radiography and CT imaging of the hip joint following trauma and endoprosthesis implantation. With the increasing number of joint-preserving surgery, e. g. of surgical hip luxation and hip arthroscopy for the treatment of femoroacetabular impingement (F...

OBJECTIVE To determine the influence of femoral hip prosthesis design and composition on regional periprosthetic bone remodelling as a function of time in asymptomatic patients. MATERIALS AND METHODS Bone mineral density (BMD) changes surrounding two differently designed porous-coated femoral prostheses (S-ROM, n=111; and Multilocki, n=62) were determined serially over a 24 month interval. Th...

Introduction: One possible cause of thigh pain following noncemented total hip arthroplasty is increased stress in the mid-portion of the femur. Anterolateral placement of a cortical strut allograft has successfully alleviated thigh pain in symptomatic patients. The purpose of this study was to show experimentally whether the surface strains on the femur are altered by the presence of cemented ...

Objective To describe early prosthesis implantations in a cohort of patients with juvenile idiopathic arthritis (JIA) followed tertiary referral hospital and to analyze possible factors influencing implant survival. Methods This was retrospective study. Charts all JIA who underwent total joint replacement at Gaetano Pini Hospital, Milan, Italy from January 1992 June 2019 were retrieved, relevan...