More men, younger americans have joint replacements.

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(CNN) hip, knee and other joint replacement surgery is one of the most common elective surgeries in the United States.
According to a study released Tuesday by the American academy of orthopaedic surgeons, the average age of patients receiving hip arthroplasty continues to decline, but more men are undergoing the procedure.
The new study shows that the average age of patients receiving hip replacement surgery falls from 66 to under 65, and the average age of the knee replacement surgery.
Although the Numbers are small, they are real, said Matthew Sloan, a resident physician atthe university of Pennsylvania’s perelman school of orthopaedic surgery, who co-authored the study. He said the younger age may be due to obesity or increased access to care, and these people want to maintain a positive lifestyle at the retirement age.
Although women continue to make up the majority of patients, “men are increasingly undergoing total joint replacement surgery,” he added.
Changes in the 21st century
Sloan explained that the history of total joint replacement dates back to the late 1890s, when surgeons first attempted to replace the ball with a hip socket. In the 1960s, Sir John charnley promoted the modern total hip replacement in England. Total knee replacement surgery began in the early 1900s, but it wasn’t until the 1970s that bone cement began to spread.
Total joint replacement involves removing some of the arthritis or damage joints and replacing them with metal, plastic or ceramic prostheses that can be used to replicate healthy joints. These replacements are performed not only on the hips and knees but also in the ankles, wrists, shoulders and elbows.
Sloan says the most common arthroplasty in the United States is total knee replacement (about 700,000 cases a year) and total hip replacement (about 400,000 a year).
As time went on, it was very significant.
“Today, on the basis of outpatient surgery, a comprehensive joint replacement operation was performed, and the patient returned home on the day of the operation,” Sloan said. However, the joint replacement operation “will not last forever”.
According to the American academy of orthopaedic surgeons, it is inevitable that substitutes will wear out and require another operation to “modify” implants. These are challenging and complex operations, in which parts or whole implants need to be removed and replaced, and the bones need to be rebuilt with metal sheets; Therefore, they are not as successful as the original operation.
“The current arthroplasty is expected to last 20 years or more,” Sloan said, adding that the duration is longer than in the past.
More patient knowledge, he says, has helped surgeons advance their practices and “provide quality care.”
Better understanding of the patient’s needs also inspired the study.


Arthritis pain and obesity.
Co-author pell lerman Neil p., assistant professor of orthopaedic surgery, school of medicine, Dr Sheth, reviewed the national inpatient sample database, the database from 2000 to 2014, including more than 116 million patient records in the United States. They code and view demographic data to see if there is a change over time.
From 2000 to 2014, the annual average age of the first joint replacement surgery decreased by 0.1 years, while the average age of the second total knee replacement surgery decreased by 0.2 years. During the 15-year study, women accounted for 62 percent of all joint replacement surgeries.
Sloan explained that this was not unusual. He said the main candidates for joint replacement surgery were patients with end-stage arthritis, and that the incidence of arthritis in women was higher than in men (26% vs 19%), possibly due to anatomical differences.
Still, the proportion of men undergoing the first knee replacement and hip replacement is still rising, Sloan said. He and Sheth also saw significant changes in the use of these selective surgeries.
“The percentage of non-hispanic whites has declined in the last 15 years, and the percentage of blacks has increased,” Sloan said. The study found that the percentage of blacks who underwent total arthroplasty (except for the second hip surgery) increased by 0.1% to 0.2% a year.
In interpreting these results, Sloan pointed out that most people say that the average age of patients with joint replacements is rising with rising rates of obesity.
Dr. Matthew Hepinstall, associate director of the Center for Joint Preservation and Reconstruction at Lenox Hill Hospital in New York, said obesity is not the only driver.

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