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 that his group looked at 25 consecutive male patients who underwent a unilateral, 50-mm diameter metal-on-metal hip resurfacing……”I should mention here that at 1, 2, and 4 years, the average metal ion levels were similar between these implants, meaning they had gone well into their steady state,” Kamali said…
ALVAL, PSEUDOTUMOUR, HYPERSENSITIVITY … WHATEVER YOU CALL IT, IT’S A REVISION TO THRHaving visited this site numerous times over the last few years, I thought it was time that I shared my experience with other past and future hip patients. I have recently undergone revision of my ASR to a THR because of a reaction to the metal on metal bearing. I know this issue is in the spotlight of the orthopedic hip community internationally just now as more patients emerge at the 3-5 year post-op mark with unique reactions.I am a female and was diagnosed with osteoarthritis in my left hip when I was 33 years old (I am now 42). At the time I was an amateur triathlete competing at local
|Surgeon Volume Influences Rate of Total Hip Replacement Revision – A DGReview of :”Early failures of total hip replacement: Effect of surgeon volume” Arthritis & Rheumatism 04/28/2004 By Emma Hitt, PhDPatients treated by surgeons who perform few total hip replacements (THR) per year are more likely to undergo revision THR, particularly within the first 18 months of surgery, than are patients treated by high-volume surgeons, a new report suggests.Hip prostheses function well for up to 20 years in at least 80% of patients, and failure rates are less than 1% per year. However, it is unclear whether failure rates vary by surgeon and hospital volumes.Elena Losina, MD, with the Department of Biostatistics, at the Boston University School of Public Health, Massachusetts, United States, and|
Derek McMinn addresses the recent Concerns about Hip Resurfacing and Metal on Metal (MoM) implants Interview by Vicky Marlow
Original Link: http://vimeo.com/12418781
Internationally renowned hip and knee surgeon and designer and pioneer of the Birmingham Hip Resurfacing, Derek McMinn addresses concerns about Hip Resurfacing and Metal on Metal (MoM) implants.
Derek McMinn has done over 6000 total hip surgeries and over 3,500 MoM Hip Resurfacings. His 10 year survivorship for the BHR (Birmingham Hip Resurfacing)in a series of 3095 performed up until December 2009 is 97% from all patients. His first metal/metal resurfacing prototype was implanted in 1991, and the current design, the first BHR was implanted in July 1997 and has not changed in any way since then.
Prednizone Side Effects – Should I Be Worried if I Take this Drug? By Nathan Wei
Prednizone- the correct spelling is “prednisone”- is a commonly used oral glucocorticoid medicine.
The adrenal glands manufacture a natural form of glucocorticoid. Glucocorticoids are responsible for many functions in the body including maintenance of blood pressure, proper use of sugar, protein, and fat metabolism, response to stress, and many other tasks.
Glucocorticoids manufactured by the body are referred to as endogenous steroids- meaning a person’s own body makes these steroids.
When steroids are taken in from the outside either by mouth, intramuscularly or intravenously, they are referred to as exogenous steroids. Taking glucocorticoids orally or intravenously can reduce the ability of the person’s own adrenal glands to continue to
|Larger cups and optimal positioning produced lowest ion
levels and wear|
In a review of 585 blood serum evaluations following hip resurfacing, only femoral size and cup inclination were found to have an effect on ion levels, according a study by orthopedic investigators.
The findings were presented at the 2010 Annual Meeting of the American Academy of Orthopaedic Surgeons.
David J. Langton, MRCS, and his colleagues also found that the size of the coverage angle of the acetabular component contributed significantly to its tolerance of suboptimal positioning.
“Larger joints, it must be emphasized, tolerated suboptimal cup position,” he said. “This must be taken into account in all analyses.”
Using routinely obtained blood serum metal ion levels from patients under the care of the
Knowing the cause of resurfacing failure can ensure successful conversion to THR by Edwin Su, MD
The shell can be retained in cases involving femoral neck fracture, femoral loosening or impingement.
Causes of failure
“The cause of failure must be carefully assessed prior to the conversion surgery in order to ensure an optimal THR outcome,” Su said. He noted that femoral neck fracture is the primary cause of short-term failure in resurfacing procedures. He theorized that the rate of these fractures could be reduced with improved surgical techniques, careful patient selection and preoperative evaluation of bone quality. Inadequate acetabular fixation or the so-called “slipped cup” is another cause of early failure, which may also be related to surgical technique.
“The greatest cause of
|Study of cobalt and chromium levels in offspring of patients with metal-on-metal hip implants 03/09/2010|
|“You Have Your MoM’s Ions” Study finds elevated levels of cobalt and chromium in offspring of patients with metal-on-metal hip implantsNEW ORLEANS, LA Hip replacement patients with metal-on-metal (MoM) implants (both the socket and hip ball are metal) pass metal ions to their infants during pregnancy, according to a new study presented today at the 2010 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS). Data showed there is a correlation between cobalt and chromium levels in the mother and those in her infant at the time of delivery.“Although the affects of metal ions in maternal and fetal subjects are unknown, the fact that the placenta is|
1/1/2008Journal: Clinical Orthopaedics and Related ResearchCitation: 465:71-79, December 2007.Authors: Carolyn Anglin, PhD, PEng; Bassam A Masri, MD, FRCSC; Jérôme Tonetti, MD; Antony J Hodgson, PhD, PEng; Nelson V Greidanus, MD, FRCSCFemoral neck fracture is the most common short-term concern after hip resurfacing arthroplasty. Currently, there is little basis to decide between neutral and valgus placement.
We loaded 10 notched cadaveric femur pairs to failure; one side was implanted at 0[degrees] relative to the femoral neck and the other at 10[degrees] valgus. All 20 were dual-energy xray absorptiometry-scanned. Failure load correlated with bone mineral density.
Valgus placement increased the fracture load by an average of 28% over neutral for specimens with normal bone mineral density but had no effect on
|Statement Regarding ASR Hip System Verdict in Chicago, ILTuesday, April 16, 2013A jury in the Circuit Court of Cook County, Illinois, returned a verdict today in favor of DePuy Orthopaedics Inc. in a product liability lawsuit concerning the ASR™ Hip System.“DePuy’s actions concerning the product were appropriate and responsible, including the program to address patients’ medical costs related to the recall,” said Lorie Gawreluk, a spokeswoman for DePuy.For additional information on the ASR Hip System, please visit:www.ASRHipInfo.com.ASR Hip System Recall InformationIn 2010, the company received new information from the National Joint Registry of England and Wales reporting that some ASR patients were undergoing a second hip replacement surgery sooner than expected. After receiving this information, the company acted quickly|
Why is Hip Resurfacing better then a Total Hip Replacement?
Dr. De Smet
“Theoretic advantages are less bone destruction, less bone resection, normal femoral loading, avoidance of stress shielding, maximum proprioceptive feedback, and restoration of normal anatomy. In addition, reduced risk of dislocation, less leg inequality problems, and easier revision should convince surgeons to favor metal-on-metal resurfacing.”
“A resurfacing is suitable for the treatment of a hip with severe arthritis when the femoral head bone quality is good. It is used more often in young and active patients than older and less active patients because conventional replacements do not last long in young and active patients. Further, a younger patient is more likely to need a revision of an artificial hip at some
Prednisone and Massage By Nicole Cutler
One of the most often presented conditions that massage therapists encounter is chronic pain, making pain management and relief a chief goal of a massage session. Sometimes though, regular massage therapy may not be enough to relieve this kind of pain, and clients may rely on traditional Western medicine for help. The most common doctor-prescribed medications for chronic pain relief are steroids, particularly Prednisone, which is primarily used as an anti-inflammatory. Since this medication is so common, it is likely that many of your clients are taking it for pain relief. This makes it absolutely necessary for massage therapists to know and understand any and all possible contraindications with this drug.
Taking Prednisone for chronic pain may offer tremendous
My physician for hip resurfacing was Dr. xxxxx. My email today is about my experience almost 4 years after my surgery. Before surgery I was a distance runner. I fell on my left hip in 2004, it wasn’t treated, I continued running, I got arthritis, I needed surgery. I had my surgery in 2008. I had nothing but problems after my surgery.
Something stuck in my mind that Dr xxxxx told me after surgery. Dr xxxxx told me he put in an oversized cup to ensure that I wouldn’t dislocate. From post surgery forward, I’ve had nothing but groin pain. Groin pain that never, and I mean never, went away. Nothing helped. Went back to Dr xxxxx on numerous occasions and every time he would
June 25, 2009
My name is Wilma and I live in Sittard in the Netherlands. Three and a half years ago I had an operation of my left hip and I became a resurfacing hip. Very soon after this operation my hip and my left leg gave pain problems. The surgeon from the hospital in Sittard told me that these pains were caused by my back. I therefore was sent to the pain clinic and I had several treatments for these pains.
After these treatments my pains didn’t decrease but became more and more serious. My surgeon still consisted in his tunnel vision that the resurfacing hip didn’t cause these problems and he refused to make a ct-scan and told me to wear a corset!
March 14, 2010
I’m just out of Jan Palfijn Hospital in Gent after THR
revision surgery on Friday. I promise to write everyone individually in the
coming days, but here’s the story.
First of all the Belgian people in general and the staff of Anca Clinic
and Villa Cento Passi could not have been nicer and have made the experience
the best it could have been.
Dr De Smet himself has been incredible. It’s really important to note here
that I am probably the first male patient of De Smet’s to lose a resurf to
femoral head AVN. He’s been as concerned as me about the whole process here.
I generally put this experience off to my poor genetics and that the blood
flow in … Read the rest
Public release date: 8-Feb-2012
Original News Release:
Classification: Adult Reconstruction Hip
Patients should limit activities to maintain hip