Newer UKR prosthesis for patients with osteoarthritis achieved satisfactory results
Patients who received a newer prosthesis similar to the Miller-Galante knee design showed significantly better Knee Society function scores than patients who had a long-used prosthesis to which it was compared. However, the two implants performed about the same at short-term follow-up, according to a presenter.
Shorter hospital stay for hip fracture associated with increased odds of survival
The longer a hip fracture patient stays in a hospital, the more likely that patient will die within 30 days of leaving, according to a study led by chair of the Department of Orthopaedic Surgery at the Virginia Commonwealth University School of Medicine.
The study, published in a December 2015 issue of the British Medical Journal, refuted conclusions from a February 2015 BMJ article that had reported that longer hospital stays lead to increased odds of survival following hip fracture.
Source: Medical Xpress
Lifelong physical activity increases bone density in men
Men have many reasons to add high-impact and resistance training to their exercise regimens; these reasons include building muscle and shedding fat. Now a University of Missouri researcher has determined another significant benefit to these activities: building bone mass. The study found that individuals who continuously participated in high-impact activities, such as jogging and tennis, during adolescence and young adulthood, had greater hip and lumbar spine bone mineral density than those who did not.
Source: Medical Xpress
Obesity and total joint arthroplasty: Time to examine needs in a different light
The prevalence of obesity in the general population is increasing. Obesity is estimated to affect approximately one-third of adults in the United States. It is estimated that 6.1 million patients who undergo total joint arthroplasty will be obese by 2040.
It is a known fact that obese patients undergoing total joint arthroplasty (TJA) are at higher risk of all complications in general, particularly infection. An increased risk for wound healing, infection, anemia, acute renal insufficiency, respiratory failure and urinary tract infection have been linked to obesity in patients undergoing TJA. Multiple studies have shown obesity can negatively impact the technical performance of both total hip arthroplasty (THA) and total knee arthroplasty (TKA), as well as influence the implant survivorship.
Higher rates of obesity seen over time in patients undergoing revision TKA
DALLAS — Research presented here at the American Association of Hip and Knee Surgeons Annual Meeting found patients undergoing revision total knee arthroplasty have become significantly more at risk for obesity in recent years.
The obesity rate among revision knee patients is increasing at an alarming rate and outpaces that of index knee patients.
Activity could help keep knees lubricated
Cartilage is filled with fluid — about 80% of the volume of the cartilage tissue — that plays the essential roles of supporting weight and lubricating joint surfaces. Loss of this fluid, called synovial fluid, results in a gradual decrease in cartilage thickness and increase in friction, which is related to the degradation and joint pain of osteoarthritis. Since cartilage is porous, fluid is readily squeezed out of the holes over time. Yet the symptoms associated with osteoarthritis usually take decades to develop. Researchers have now proposed a mechanism that explains how motion can cause cartilage to reabsorb liquid that leaks out.
Source: Science Daily
Satisfactory results seen in revision THA with acetabular reinforcement, HA granules, autograft
Using acetabular revision for loosening as an endpoint, investigators of this study found more than 90% acetabular component survival at 10 years among patients who underwent revision total hip arthroplasty for acetabular bone deficiency using a Kerboull-type acetabular reinforcement device to support hydroxyapatite granules and structural autograft.
Researchers retrospectively evaluated 37 patients who underwent the revision procedure for American Academy of Orthopaedic Surgeons type II and III acetabular defects. Patients had a minimum follow-up of 10 years and a mean follow-up of 12.8 years.
Prevalence of Total Hip and Knee Replacement in the United States
Background: Descriptive epidemiology of total joint replacement procedures is limited to annual procedure volumes (incidence). The prevalence of the growing number of individuals living with a total hip or total knee replacement is currently unknown. Our objective was to estimate the prevalence of total hip and total knee replacement in the United States.