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Too Much Weight, Too Soon: A Look at Knee Replacements in Obese Patients

Monday, December 23, 2024
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More patients with severe obesity are getting knee replacements these days. Yet, this also means more complications and implants not lasting long. A new study looked into how a specific type of knee replacement, made from a porous metal, fared in these patients over time. They checked both how well the patients moved and how the replacement looked on X-rays. Obesity can be tough on new knees. The extra weight can cause early wear and tear. But the porous metal used in this replacement can grow into the bone, giving it a strong hold. This study wanted to see if this effect held up over the mid-term, around 2 to 5 years. The patients in the study were all severely obese, with a body mass index (BMI) over 40. They got their new knees and then had regular check-ups. The doctors looked at how well they could walk and bend, as well as signs of wear or loosening on X-rays. The results were promising. Most patients showed good function and no signs of the replacement shifting. This suggests that this type of knee replacement could be a good option for obese patients. However, it's important to note that the study was small, with only 30 patients. Larger studies are needed to confirm these findings. Also, obesity is a complex issue. It's not just about the knee replacement; overall health and lifestyle play a big role too.
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