Category Archives: Metal Ions/Pseudotumors

Metal Ion/Pseudotumors Medical Studies

Hip Resurfacing Information at Surface Hippy Posted on by
… Read the rest

Updated Guidelines To Monitor Metal on Metal Devices by UK’s MHRA 2017

Hip Resurfacing Information at Surface Hippy Posted on by

Original MEDICAL DEVICE ALERT by UK MHRA 2017 Available Here

The Medicines and Healthcare products Regulatory Agency (MHRA) UK has called for longer-term monitoring of all patients fitted with metal-on-metal hip implants, as a precautionary measure, in an update to its original guidance issued in 2012.

“MHRA, in colsultation with its independent Metal-on-Metal Expert Advisory Group (MoM EAG), has continued to monitor the performance of MoM hip joint articulations for the occurrence of soft tissue … Read the rest

Normal Levels of Cobalt and Chromium after Hip Resurfacing

Hip Resurfacing Information at Surface Hippy Posted on by

View Complete Study Here

Studies were searched for in the Medline database, Embase, and the Cochrane Database of Systematic Reviews. Highest mean or median ion concentrations of Cr and Co after a minimum of 1 year of follow-up were extracted and grouped according to sample- and articulation type, and average values were calculated…

…43 studies were included and 16 different MoM implants were identified. For the different types of bearings, average ion concentrations and range … Read the rest

Guidelines to Follow-Up MOM Devices Not Cost Effective

Hip Resurfacing Information at Surface Hippy Posted on by

Original Article Here

A new study about adverse reactions to metal debris after Metal on Metal THR and Hip Resurfacing shows the current follow-up guidelines worldwide are not cost effective or evidence-based.

The follow-up guidelines for metal-on-metal (MoM) hip arthroplasty and hip resurfacing from five worldwide authorities worldwide, including the U.K. were included.

Findings showed large differences between cost per patients. U.S. costs were three-times more than MHRA costs…

…Australia vs. U.S. and Canada guidelines … Read the rest

Blood cobalt levels, device type may predict metal-on-metal hip failure study 2014

Hip Resurfacing Information at Surface Hippy Posted on by

The clinical implications of elevated blood metal ion concentrations in
asymptomatic patients with MoM hip resurfacings: a cohort study

David J Langton, Raghavendra P Sidaginamale, Thomas J Joyce, Shonali Natu,
Peter Blain, Robert Drysdale Jefferson, Stephen Rushton, Antoni V F Nargol

Full Study Here
10.1136/
bmjopen-2012-001541
January 31, 2014

Objective:
To determine whether elevated blood cobalt (Co) concentrations are associated
with early failure of metal-on-metal (MoM) hip resurfacings secondary to adverse
reaction to metal debris … Read the rest

Two-year Study of serum metal ion levels in hipresurfacing 2014

Hip Resurfacing Information at Surface Hippy Posted on by
Two-year serum metal ion levels in minimally invasive total conservative hip resurfacing: preliminary results of a prospective studyTai SM1, Millard N, Munir S, Jenabzadeh AR, Walter LR, Walter WL.Complete Study http://www.ncbi.nlm.nih.gov/pubmed/25288230Metal-on-metal (MoM) hip resurfacings have been associated with the potential development of metallic debris and its associated pathology. Serum cobalt and chromium levels are a reliable surrogate marker of wear rates in MoM bearings. The aim of the study was to examine… Read the rest

Metal ion release following hip replacement

Hip Resurfacing Information at Surface Hippy Posted on by

Metal ion release following hip replacement not strongly related to patient activity medical study

Metal ion release following hip replacement not strongly related to patient activityRead Complete Article by Clicking Here The amount of patient activity following metal-on-metal hip resurfacing arthroplasty seems to show little correlation to metal ion release, according to study presented here. Amir Kamali, PhD, presented his team’s findings at the 56th Annual Meeting of the Orthopedic Research Society.

Kamali reported
… Read the rest

The effect of component size and metal ions after resurfacing arthroplasty

Hip Resurfacing Information at Surface Hippy Posted on by

The effect of component size and orientation on the concentrations of metal ions after resurfacing arthroplasty of the hip 2008

LinkRead Complete Article by Clicking Here

D. J. Langton, MRCS, Orthopaedic Research Register1; S. S. Jameson, MRCS, Specialist Registrar, Trauma and Orthopaedics1; T. J. Joyce, MSc, PhD, MA, BEng, Lecturer in Bioengineering2; J. Webb, MRCS, Specialist Registrar, Trauma and Orthopaedics1; and A. V. F. Nargol, FRCS(Tr & Orth), Consultant Orthopaedic Surgeon1 1 Joint Replacement

… Read the rest

Soft Tissue Reactions to Metal-on-Metal Arthroplasty

Hip Resurfacing Information at Surface Hippy Posted on by

Read Complete Article Here

By Robert Trace September 17, 2009

MANCHESTER – Researchers here reported that adverse soft tissue reactions following metal-on-metal hip arthroplasty are typically due to increased wear of the bearing surfaces, and patients with smaller femoral heads may be particularly susceptible to these complications.

In an independent center study, David Langton, FRCS, and colleagues in the Joint Replacement Unit at the University Hospital of North Tees in Stockton, England, reviewed 155 Birmingham
… Read the rest

Risk Factors for Inflammatory Pseudotumour Formation Study

Hip Resurfacing Information at Surface Hippy Posted on by
Abstract: Risk factors for inflammatory pseudotumour formation following hip resurfacingComplete Study http://www.jbjs.org.uk/cgi/content/abstract/91-B/12/1566S. Glyn-Jones, MA, FRCS(Orth), DPhil, Senior Lecturer, Consultant Orthopaedic Surgeon1; H. Pandit, FRCS(Orth), Senior Clinical Fellow1; Y.-M. Kwon, FRCS(Orth), FRACS(Orth), Research Fellow1; H. Doll, MSc, DPhil, Senior Medical Statistician2; H. S. Gill, BEng, DPhil, University Lecturer in Orthopaedic Engineering1; and D. W. Murray, MD, FRCS(Orth), Consultant Orthopaedic Surgeon, Professor1 1 Department
… Read the rest

Distribution of Chromium and Cobalt Ions Resurfacing Hip Arthroplasty

Hip Resurfacing Information at Surface Hippy Posted on by
Leonard R. Walter MBBS(Syd), FRACS,
FAOrthA, Ed Marel MBBS(Syd), FRCS Ed (Orth),
FRACS, FAOrthAa,
Richard Harbury MBBS(Syd), FRACS, FAOrthAa
and Jenny Wearne RNaPeninsula Orthopaedics Research
Institute, DEE WHY NSW 2099, Australia

Received 28 November 2006;

accepted 7 July 2007

Abstract

The most appropriate blood fraction for the
measurement of metal ions in patients with
metal-on-metal implants is controversial. We
compared chromium (Cr) and cobalt (Co) ion
levels in 29 patients

… Read the rest