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Zimmer Biomet Shoulder Failure: Consider Rehabilitation over Revision Surgery

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Washington, DCNot only is the failure rate of Zimmer Biomet shoulder surgery abnormally high, a new study shows that some patients undergoing shoulder replacement surgery have an increased risk of complications, including the need for revision surgery—which comes with its own set of risks.

Every surgery has a risk of failure, and because shoulder joint replacements and reverse total shoulders are commonly performed, a substantial number of patients have experienced shoulder replacement arthroplasty failures for numerous reasons. The UW Orthopaedics & Sports Medicine (2013) states that “often these failures can be improved by rehabilitation or revision surgery.” A more recent study indicates that certain patients should opt for rehabilitation rather than revision.

A study in the Journal of Bone & Joint Surgery (Jun 7, 2017) reports that patients with higher body mass index (BMI) are more likely to require revision surgical procedures and have postoperative complications after shoulder arthroplasty. And complication risk increases with increasing BMI. "These findings support the notion that increasing BMI increases the stress on the implant, leading to higher rates of mechanical implant failure," Dr. Wagner and coauthors at the Mayo Clinic report. The researchers suggest that the increased infection risk is likely related to immune system changes and to "dead space" created by excess fatty tissue.

The Mayo Clinic researchers studied data on 4,567 shoulder arthroplasties performed between 1970 and 2013. Forty-three percent of the patients were obese (with a BMI of 30 or higher). The researchers analyzed the relationship between BMI and different types of complications and found that 302 patients required revision surgery due to mechanical failure, loosening of the implant, or other causes.

The most common complications after reverse shoulder arthroplasty included instability, periprosthetic fracture, infection, component loosening, neural injury, acromial and/or scapular spine fracture, hematoma, deltoid injury, rotator cuff tear, and venous thromboembolism (VTE). The study pointed out that diagnosing infection after shoulder arthroplasty “remains a challenge”.

Although advancements in procedures and new implants have made shoulder replacement surgery much less invasive, with less pain and shorter recovery time, infection and device failure is still a risk. A number of shoulder replacement devices have been recalled, including the Zimmer Biomet Comprehensive Reverse Shoulder, which was approved by the FDA without any human clinical trials (it was approved by way of the 510K process) and pulled from the market in 2010 after complaints of fracturing. Fractures that result in revision surgeries could cause “serious adverse health consequences such as permanent loss of shoulder function, infection, or rarely, death,” according to the FDA. They classified the recall as a “Class I,” the most serious type of medical device recall.

The NCBI in 2013 published a study by the Open Orthopedics Journal saying that during the last decade the number of shoulder arthroplasty procedures more than doubled and it has been estimated that more than 46,000 shoulder replacements are performed annually in the US. This study also determined that shoulder infection “represents a devastating complication and, despite treatment, is associated with unsatisfactory results. The majority of infections develop in presence of diabetes, systemic lupus erythematosus, rheumatoid arthritis, previous surgical procedures, and remote sources of infection.”

According to the Zimmer website, less than 1.9% of patients get an infection in the first two years. This statistic was taken from the Journal of Bone Joint Surgery back in 2002. Needless to say, it looks like Zimmer hasn’t updated its site with recent studies.

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READER COMMENTS

Posted by

on
How do you know who the maker of your shoulder parts are? On June 19,2013 I underwent shoulder surgery that consists of clips to repair a full torn labrum, then a partial tear to rotator cuff fixed, bone spurs I think scapular region removed, AC joint was destroyed and removed if I remember correctly and some bone shaved down. Now I was sent home same day surgery late in the evening. As I went to sleep but woke up around 2 a.m. cause nerve block wore off I was swollen in neck and chest a bit but thought nothing of it, so I took my meds, used ice and fell asleep but when I awoke around 6:30 a.m I went to bathroom to find I was swollen clear to my vaginal region, it was hard to breathe and I couldn't talk(I SQUEAKED). Ended up at ER to have to undergo immediate surgery for a collapsed lung, well after first one failed and I fought to live I ended up being stabbed in two more places until they hit the gas pocket, so I spent 10 days in hospital and I believe it was 7-8 days in CCU then to normal stay. The anesthesiologist was to blame as he did nerve block he went to far and punctured the top of my lung, unfortunately there was not an attorney to take my case.

Posted by

on
To Whom It Concern,
I didn't have a shoulder replacement but I did haveArthroscopy surgery done on my right shoulder,after having so many injection.Which I am still bother by it today.The surgery was done 2009

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