GEORGE FRANK CHIMENTO, M.D.

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This study examined if a nickel allergy affects the success of knee replacement surgery in 50 patients. Researchers found that while some patients had a strong reaction to nickel, this reaction did not relate to how well the knee replacement functioned, as measured by the Oxford knee score. This is important because it suggests that doctors should not assume that a positive nickel allergy test is the reason for any problems with a knee replacement, and they should consider other causes for pain or dysfunction instead. Who this helps: This helps doctors and patients dealing with knee replacements.

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This study tracked patients who had revisions of a specific type of hip implant (a large head metal-on-metal prosthesis) that was recalled due to high failure rates. Researchers found that, on average, patients experienced a significant improvement in their hip function, with scores rising from 48.5 to 89.5 after surgery. Additionally, all 24 hip replacements studied remained successful over 10 years, with no reported failures or infections. Who this helps: This benefits patients who received the recalled hip implants and may be considering revision surgery.

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This study looked at whether the season or the climate affects the risk of infections in patients who receive knee or hip joint replacements. Researchers analyzed data from nearly 3,700 surgeries and found that only 28 patients (0.76%) developed infections that required additional surgery. Even though infections were most common in the hottest and most humid months, the study showed that temperature and humidity did not significantly impact the infection rates. Who this helps: This information helps surgeons better inform patients about the risks of infection related to their joint replacement surgeries.

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This study looked at how better coordinated care around hip surgery can reduce the amount of time patients spend in the hospital and in rehabilitation facilities after surgery. It found that patients who received this new care model spent an average of 1.86 days in the hospital, compared to 3.34 days for those who didn’t, and only 16.5% of the new care patients needed skilled nursing or rehab, compared to 27.5% of the older group. This matters because it shows that with improved management, patients can recover more effectively and spend less time in hospitals and rehab, while still receiving quality care. Who this helps: This helps patients undergoing hip surgery and their doctors.

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This study looked at how accurately orthopedic patients report their own height and weight. Out of 329 patients, those with a higher body mass index (BMI) were found to underestimate their weight by about 1.29 kg and overestimate their height by about 1.14 cm. This matters because incorrect self-reported measurements can impact treatment decisions and care for patients, making it important for doctors to get accurate data. Who this helps: This helps doctors understand their patients better, especially those who are overweight.

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This study looked at the effects of certain blood-thinning medications on complications after joint replacement surgeries, specifically total hip or knee replacements. Researchers found that patients who took both antiplatelet agents and anticoagulants within 90 days before surgery had a higher rate of prosthetic joint infections (5.13%) compared to those who did not take these medications (0.82%). This information is important because it helps surgeons understand the risks and better prepare patients for surgery. Who this helps: This helps surgeons and patients decide the best course of action before joint replacement surgeries.

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This study looked at a new device that measures hemoglobin levels without needing to draw blood in patients having joint surgery. Researchers found that this noninvasive method provided measurements similar to traditional blood draws, while patients overwhelmingly preferred it, with 100% satisfaction. Additionally, using the noninvasive system saved $16.50 per patient, leading to an 86% overall cost reduction compared to standard blood tests. Who this helps: Patients undergoing joint surgery benefit from less discomfort and lower costs.

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This study looked at YouTube videos about knee replacement surgery and knee osteoarthritis to see how reliable the information is. They analyzed 106 videos and found that 64% of the knee replacement videos and 66% of the knee arthritis videos had poor educational quality, meaning they often missed important details like complications and long-term recovery. Understanding that YouTube is not a good source for this type of medical information helps doctors better educate their patients. Who this helps: Patients seeking information about knee surgery and arthritis.

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This study looked at how patients in an orthopedic adult reconstruction clinic used a web-based health portal. Out of 150 patients surveyed, 68.7% accessed the portal, and 90.3% found it helpful for gathering health information. However, many older patients struggled to understand the information presented, with 47.5% expressing confusion, and they often turned to their doctors or family for clarification. Who this helps: This benefits patients, particularly older adults who may need extra support using online health resources.

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This study looked at how obesity affects the alignment of knee components in patients undergoing total knee replacement surgery. Researchers examined 251 surgeries and found that obesity did not significantly impact the alignment of knee components in any measured area, which means that weight alone may not be the reason obese patients have worse outcomes after the surgery. This is important because it suggests that other factors may be causing issues for obese patients after their knee operations. Who this helps: Patients undergoing knee surgery and their doctors.

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This study looked at the use of tranexamic acid (TXA) during knee surgeries to treat infections around joint replacements. The researchers found that TXA significantly reduced blood loss and the need for blood transfusions—patients receiving TXA experienced a 19.8% drop in hemoglobin after surgery compared to 30.05% in those who didn't get TXA. Importantly, there was no difference in infection or mortality rates between the groups. Who this helps: Patients undergoing knee surgeries for infections will benefit from this treatment.

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The study examined whether levels of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) before surgery could predict complications after knee replacement surgery. Researchers looked at 351 patients and found no meaningful connection between pre-surgery CRP or ESR levels and complications such as heart problems or infections in the first 90 days after surgery. This means that testing these markers before knee surgery isn't necessary to assess the risk of complications. Who this helps: This helps doctors determine which tests are truly necessary for patients considering knee replacement surgery.

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This study looked at 99 patients who experienced fractures of the thigh bone (femur) after hip replacement surgery. Researchers found that 86% of these patients healed their fractures successfully after at least one year, with success rates of 84% for those who received a cemented repair and 86% for a cement-less option. The findings indicate that most patients can expect their fractures to heal well, and the study supports using a specific classification system to guide treatment decisions. Who this helps: This helps patients recovering from hip replacement surgery.

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This study looked at how a specific enzyme activity, called angiotensin-converting enzyme (ACE), can help assess lung changes during total knee replacement surgery. Out of 11 patients, 10 showed better lung function after tourniquet release, with 90% demonstrating improved measurements indicating their lungs adjusted well to blood flow changes. One patient had complications, showing that monitoring ACE levels can be crucial for predicting lung health during and after surgery. Who this helps: This research benefits patients undergoing total knee surgeries by improving monitoring and potentially preventing lung complications.

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The study examined 1,717 reports of problems with total hip and 2,769 reports with total knee medical devices submitted to the FDA between 1984 and 1993. It found that many issues with hip devices were linked to their modular parts, particularly those that were cementless, which caused the most complications. For knee devices, 56% of reports were connected to wear in the plastic components, with most issues occurring in the patellar part (46%) and the tibial part (33%). The research highlights that mechanical failures of these devices are a major reason for patients needing further surgeries. Who this helps: This benefits patients who receive hip and knee replacements, as well as the surgeons who perform these procedures.