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Factors associated with mechanical complications following primary total hip arthroplasty through a modified direct anterior approach using custom stems.
Int Orthop
January 2025
Service de Chirurgie Orthopédique, Clinique Trenel, Rue du Dr Trenel 575, Sainte-Colombe, 69560, France.
Purpose: To determine the rate and risk factors of mechanical complications (MCs) within two years following total hip arthroplasty (THA) through direct anterior approach (DAA) using custom stems, and to compare findings to other surgical approaches in the literature.
Methods: The study included a consecutive series of 479 patients (529 hips) that had undergone primary THA through the DAA using uncemented custom stems between 02/2014 and 04/2017. There were 301 men and 228 women, with a mean age of 55.
Purpose: Evaluate the influence of different Co-Cr framework manufacturing techniques on the bond strength between metal and two types of veneering ceramic with and without a metal primer.
Materials And Methods: 72 metal specimens were fabricated using the same Co-Cr alloy (Keramit NP; Nobil Metal) with three different techniques: ingots for casting (Keramit NP); disks for CAD/CAM milling (Synergy Drive Keramit NP); and powder for SLM (Keramit NP-S). Each of the 24-specimen groups, was divided into two subgroups, according to the application, or not, of Nobil Metal Bonding (NMB) (Nobil Metal).
Head size in Delta ceramic-on-ceramic total hip arthroplasty: a comparative registry study.
Arch Orthop Trauma Surg
September 2024
Head of Ortopedia-Traumatologia e, Chirurgia Protesica e dei Reimpianti d'anca e di Ginocchio, IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136, Bologna, Italy.
Introduction: Optimal bearing size in total hip arthroplasty (THA) has not been clearly ascertained, but large diameter ceramic balls may improve function and implant stability, with minimal concerns for wear. Delta ceramic-on-ceramic (COC) THA were stratified based on head diameter (32, 36 and 40 mm), aiming to assess: 1) survival rates, reasons for revision and hazard ratios for failure; 2) survival rates and hazard ratios for aseptic loosening, dislocation/primary instability, liner failure.
Materials And Methods: A regional arthroplasty registry was enquired about Delta COC THA performed for primary osteoarthritis, stratified by head size.
Choice of Bearings Influences the Implant Survival of Total Hip Arthroplasty in Patients Who Have Osteoarthritis Aged 55 Years or Older: Results of 158,044 Patients From the Nordic Arthroplasty Register Association From 2005 to 2017.
J Arthroplasty
February 2025
Faculty of Medicine and Health Technologies, Coxa Hospital for Joint Replacement, University of Tampere, Tampere, Finland.
Background: The aim of our study was to compare implant survival rates of different total hip arthroplasty (THA) bearings in the Nordic Arthroplasty Register Association.
Methods: All conventional primary THAs performed between 2005 and 2017 in patients aged more than 55 years who had primary osteoarthritis were studied. Metal-on-highly cross-linked polyethylene (MoXLP), ceramic-on-highly cross-linked polyethylene (CoXLP), ceramic-on-ceramic (CoC), and metal-on-metal (MoM) bearings were included.
Comparison of 5-year cup and stem migration between ceramic-on-ceramic and ceramic-on-polyethylene bearing in press-fit total hip arthroplasty: a randomised controlled trial using radiostereometric analysis.
Hip Int
November 2024
Department of Orthopaedic Surgery, OLVG, Amsterdam, the Netherlands.
Introduction: The inelasticity of ceramic bearings might affect primary stability and migration of implants in press-fit total hip arthroplasty (THA). This randomised controlled trial compares migration patterns of the uncemented Delta-TT cup and H-MAX S stem between ceramic and polyethylene liners, up to 5 years follow-up.
Methods: Patients receiving primary press-fit THA were randomly allocated to a ceramic ( 28) or polyethylene ( 25) liner.
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