Background: A short stem hip arthroplasty can be revised in many cases using a conventional stem. Furthermore, in some cases the implantation of a short stem is intended, but intraoperatively reasons may lead to the decision to implant a conventional stem after previous preparation of a short stem.
Objective: In both cases it is questionable if the anchorage of a conventional stem is negatively affected by the previous preparation of a short stem. In clinical practice mid- or long-term follow up for these special cases hardly exist.
Methods: The strain patterns for the conventional Bicontact stem in primary implantation and after preparation of the proximal femur for a METHA short stem were tested biomechanically in three pairs of cadaveric femora.
Results: The strain patterns for the conventional Bicontact after preparation of the METHA short stem were similar to conditions after testing the conventional stem in primary conditions.
Conclusions: These data lead to the consequence that in clinical practise the implantation of a conventional stem after preparation of a short stem and even after revision of a short stem is possible without increased risk of loosening or long-term stress-shielding.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3233/THC-191940 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clinical updates in mesenchymal stromal cell therapy for osteoarthritis treatment.
Expert Opin Biol Ther
December 2024
Department of Orthopedics, Dongguk University Ilsan Hospital, Goyang, Republic of Korea.
Introduction: Osteoarthritis (OA) is a common chronic musculoskeletal disease with heterogeneous clinical manifestations and variable responses to different treatments. Unfortunately, there is no effective disease modifying therapy at present that can alter the natural course of the disease. Cell therapy based on mesenchymal stromal cells (MSCs) may offer an attractive therapeutic option for OA with their multiple modes of action, particularly immune-regulatory and regenerative capacities.
View Article and Find Full Text PDFOverexpression of Heme Oxygenase 1 Enhances the Neuroprotective Effects of Exosomes in Subarachnoid Hemorrhage by Suppressing Oxidative Stress and Endoplasmic Reticulum Stress.
Mol Neurobiol
December 2024
Department of neurology, The Third Affiliated Hospital, Sun Yat-sen University, 600 Tianhe Road, Guangzhou, 510630, Guangdong, China.
Aims: This study aims to elucidate the therapeutic effects and underlying mechanisms of exosomes derived from Heme oxygenase 1 (HO-1)-overexpressing human umbilical cord mesenchymal stem cells (Exo) in a subarachnoid hemorrhage (SAH) mouse model.
Methods: In this study, exosomes were identified using Western blotting, particle analysis, and transmission electron microscopy. The effect of Exo and Exo on the neurological function of SAH mice was assessed using the Garcia scoring system, Beam balance, Rotarod test, and Morris water maze test.
Understanding the complex function of gut microbiota: its impact on the pathogenesis of obesity and beyond: a comprehensive review.
Diabetol Metab Syndr
December 2024
Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran.
Obesity is a multifactorial condition influenced by genetic, environmental, and microbiome-related factors. The gut microbiome plays a vital role in maintaining intestinal health, increasing mucus creation, helping the intestinal epithelium mend, and regulating short-chain fatty acid (SCFA) production. These tasks are vital for managing metabolism and maintaining energy balance.
View Article and Find Full Text PDFGene expression profiles in human dental pulp stem cells treated short-term with lipopolysaccharides before and after osteoinduction.
J Oral Biosci
December 2024
Division of Physiology, Kyushu Dental University, Kitakyushu, Fukuoka, Japan.
Objectives: Dental pulp stem cells (DPSCs) are essential for reparative dentinogenesis following damage or infection. DPSCs surrounding the blood vessels in the central region of the dental pulp actively proliferate after tooth injury and differentiate into new odontoblast-like cells or odontoblasts to form reparative dentin. However, the signaling pathways involved in undifferentiated and osteodifferentiated DPSCs under inflammatory conditions remain unclear.
View Article and Find Full Text PDFPeriprosthetic Ulna Fractures Following Aptis Distal Radioulnar Joint Arthroplasty: A Series of Four Cases.
J Hand Surg Glob Online
November 2024
Christine M. Kleinert Institute for Hand and Microsurgery, Louisville, KY.
Purpose: This case series presents four cases of periprosthetic ulna fractures following Aptis distal radioulnar joint (DRUJ) arthroplasty to elucidate clinical characteristics, contributing factors, management challenges, and short-term outcomes following this rare complication and to propose prevention and optimal treatment strategies.
Methods: We conducted a retrospective review of 239 Aptis DRUJ prostheses implanted between 2012 and 2022 at a single institution. We identified four cases of periprosthetic ulna fractures and assessed demographics, surgical indications, time to fracture, mechanism of injury, radiographic findings, treatment modalities, associated complications, and outcomes.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!