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…
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 Unit, University Hospital of North Tees, Hardwick, Stockton-on-Tees TS19 8PE, UK. 2 Newcastle University, Claremont Road, Newcastle upon Tyne NE1 7RU, UK.Increased concentrations of metal ions after metal-on-metal resurfacing arthroplasty of the hip remain a concern. Although there has been no proven link to long-term health problems or early
Dear Dr. Bala,I apologize for seeming to have neglected or ignored you. I have begun this missive on several occasions, only to stumble over my own limitations. I know I promised you a recommendation you might be able to use on your web site. You have my permission to use any or all of this email in any way you see fit.I have struggled to find the words necessary to describe how Dr. Bala has changed my life. At 44 years of age, to hear the words from a U.S. physician, “You have osteoarthritis in your left hip and I could have you approved for a total hip replacement surgery by Monday”, was nothing short of terrifying. He told me the determining factor… Read the rest
Resurfacing patients had gait characteristics that were comparable to normal hips. Although standard hip replacements had markedly improved gait parameters when compared to osteoarthritic hips they never approached resurfacing or normals. “
Gait Analysis Of Metal On Metal Surface ArthroplastyPoster Board Number: P050 Location: McCormick Place Hall B Adult Reconstruction Hip Phillip Ragland, MD Washington DC (n) Anil Bhave, MS Baltimore MD (n) Roland Starr, MS Baltimore MD (n) Michael A Mont, MD Baltimore MD (a, e – Wright Medical Technology) This study compared gait kinematics of resurfacing patients to normal hips, osteoarthritic hips, and patients with standard hip replacements.Metal-on-metal resurfacing is a type of hip arthroplasty in which there is conservation of the proximal femur. Little is known about the functional capabilities
Can I have an MRI after I had a hip resurfacing? This is a question many people ask after having a hip resurfacing. This is Dr. Rubinstein’s answer:
MRI is perfectly safe with any orthopaedic implant (joint replacements, fracture hardware screws and others). The implants may degrade the picture quality in the areas right near the implants but no harm will come to the implants or the surrounding bone.Pacemakers are another story and are not safe with MRI. Other things that can be problematic are metal filings in the eye and vascular clips placed within 6 months.Scott Rubinstein M.D. www.hiportho.com
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.
|John WilliamsonJanuary 17, 2006 Harvard Pilgrim Health Care 1600 Crown Colony Drive Quincy MA 02169-9777Re: Appeal of denied coverage, HP0412161-00Dear HPHC Representative:I am requesting for voluntary member reconsideration. Following is an explanation of my medical condition and history. In a letter dated December 23, 2005, HPHP denied my requested authorization for a total hip resurfacing.My Condition and HistoryI have DX with degenerative arthritis of the left hip, which restricted my normal activities. I could no longer walk fast, getting in and out of my car was more difficult and climbing stairs and performing my job was becoming awkward. I’m a single parent with full physical custody of my three children. Caring for my three children, working full time and|
Yes, it is true that minimally invasive approach has been proven not to have great benefits over a conventional incision in terms of blood loss, pain , or speed of recovery in the same surgeons hands. It is only of cosmetic value.All studies to investigate this have been done on two groups of patients in which a single surgeon employs the two approaches in the diff groups. When a surgeon who is capable of doing a minimally invasive approach does a conventional approach it is logical that the conventional technique will be only marginally bigger and therefore advantages do not show up in studies. However, if a minimally invasive approach of a surgeon is compared with a conventional approach of another surgeon who
Having read with much interest the reports of others who were someway down the track, I thought I would weigh in with an overviewreport of my own first year.I am a male living in Melbourne Australia, and first realized that Ihad OA around 2000. It became a bit painful doing leg presses atthe gym (so I stopped), and I started getting pains in my rightthigh, even going down to the ankle. One doctor thought it was astrained tendon, but a few months later it had not healed so I wentto a sports medicine doctor who sent me for an x-ray and diagnosedOA. He discussed treatment (exercise, physiotherapy, painkillers)and that it was possible that surgery might
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
The ReCap® Femoral Resurfacing System replaces the diseased surface of the femoral head and is designed to restore the normal anatomy and biomechanical function of the hip joint.The major advantage of the ReCap® Femoral Resurfacing System is its conservative nature. By avoiding medullary canal intrusion, it preserves valuable femoral bone stock, making it a bone-preserving alternative to total hip arthroplasty. A 2006 study published by Girard, J. et al. in the Journal of Bone and Joint Surgery (British) concluded that a group of young patients with femoral hemi-resurfacing were able to maintain a higher average activity level versus a similar group of patients who received a total hip arthroplasty1. Results suggest that improved resurfacing results may be attributed to the following:
|The post approach which I employ is traditionally known as the muscle sparing approach and the anterior and anterolateral approaches which is very popular in the U.S and some parts of Europe are the muscle compromising approaches. The muscle here refers to the Abductor group or the muscles which lift your leg sideways and is the most important muscle of the hip. The post approach spares this completely.However some muscle have to be cut in any approach to get access to the hip and in the post approach, one cuts the short ext rotators which are flimsy , small muscles in the back of the hip. These are stitched back. These muscles are relatively unimportant as the main ext rotator is the gluteus maximus which|
The Birmingham (Smith & Nephew, Richards) total HSR was the first to get FDA approval in the US based on an unprecedented FDA decision to approve this implant on the basis of single (developing) surgeon’s foreign data. Cormet 2000 ( Corin Ltd., Stryker) total HSR was the first to be approved based on the usual mechanism of a US run Multi-center FDA study( approval 7/2007, I was the lead investigator). Therefore, there are now 2 implants available in the US that have an FDA indication for total HSR.The Recap/Magnum (Biomet), Conserve Plus (Wright Medical) and ASR (Depuy) are all also FDA approved implants in the USA. They may be legally used by any surgeon for the purpose of total Hip Surface Replacement. (The FDA… Read the rest
IN PRAISE OF DR. BALASUBRAMANIAN (COIMBATORE, INDIA)
In January, I had my left hip resurfaced by Dr. Bose in
both hips were almost equally bad (bone on bone), Dr. Bose
reluctant to operate on both, so I had the left hip operated
home to Chicago and hoped for the best.
right hip began
getting worse, and after about 5 weeks, it became apparent
that I’d have to
have it resurfaced too. I was extremely depressed for a
couple of days, and
then I decided to stop crying about it and just get it done
as soon as
possible. I read Gregg Dean’s e-mail on the surfacehippy
website about a
Dr. Balasubramanian who charged only $5000. Dr. Bose … Read the rest