Navigation Links
Obesity associated with longer hospital stays, higher costs in total knee replacement patients
Date:5/14/2014

ROSEMENT, Ill.─ Obesity is associated with longer hospital stays and higher costs in total knee replacement (TKR) patients, independent of whether or not the patient has an obesity-related disease or condition (comorbidity), according to a new study published in the Journal of Bone and Joint Surgery (JBJS).

More than half of TKR patients have a body mass index (BMI) within the obesity range (greater than 30 kg/m), which has been linked to a higher risk for related comorbidities such as diabetes, hypertension, osteoarthritis; and in some studies, to higher medical costs and longer hospital stays. However, research has been inconclusive as to whether the higher related medical costs in obese TKR patients are directly due to a higher BMI or related comorbidities.

In the JBJS study, researchers reviewed the BMI, comorbidities, complications, outcomes and cost of care of 8,129 patients who had undergone 6,475 primary TKRs and 1,654 revision TKRs at a major medical center between Jan. 1, 2000 and Sept. 30, 2008. The median patient age was 68. Fifty-seven percent of the patients who underwent primary TKR and 53 percent who underwent revision TKR were female. The mean patient BMI was 31.6 kg/m.

Among the key findings of the research:

  • The most common patient comorbidities were hypertension and diabetes.
  • Length of stay and direct medical costs were lowest for patients with BMI values in the normal to overweight range.
  • Every 5-unit increase in BMI beyond 30 kg/m was associated with higher hospitalization costs: in 2010 U.S. dollars, approximately $250 to $300 for patients undergoing TKR and $600 to $650 for patients undergoing a revision joint replacement. These estimates persisted after adjusting for comorbidities and complications.
  • Every 5-unit increase in BMI beyond 30 kg/m was associated with a mean hospital stay that was .11 days longer for patients undergoing primary TKR and .06 days longer for patients undergoing revision TKR. The data was the same for patients with and without comorbidities.

"The higher costs associated with obesity are believed to be largely due to managing comorbid medical conditions linked to obesity, such as diabetes," said lead study author Hilal Maradit-Kremers, MD, an associate professor of epidemiology at Mayo Clinic in Rochester, Minn. And yet in this study, "even in the absence of comorbidities, patients with obesity had longer stays and higher hospital costs."

"The bottom line is that obesity is increasingly common among patients undergoing joint replacement, which creates a myriad of technical and medical challenges, and likely contributes to the financial burden of the surgery," said senior author David G. Lewallen, MD, an orthopaedic surgeon, also from Mayo Clinic.

Study Details

In the study, patient data on clinical and surgical characteristics and complications were obtained from the original medical records and the institutional joint registry. Patients were classified into eight groups based on their BMI at the time of surgery. Direct medical costs were calculated in 2010 U.S. dollars by using standardized, inflation-adjusted costs for services and procedures billed during hospitalization within a 90-day window. Data on hospital length of stay and direct medical costs were compared across the eight BMI categories in both unadjusted and multivariable risk-adjusted analysis. Linear regression models were used to determine the cost impact associated with increasing BMI and obesity accounting for comorbidities and complications.


'/>"/>

Contact: Lauren Pearson Riley
pearson@aaos.org
847-384-4031
American Academy of Orthopaedic Surgeons
Source:Eurekalert

Related medicine news :

1. Disrupted Sleep May Raise Risk for Obesity, Diabetes: Study
2. Obesitys Health Costs Double Earlier Estimates
3. Troubled Homes May Fuel Obesity in Girls
4. Childhood Obesity May Raise Odds of Adult Liver Cancer
5. Could the Childhood Obesity Epidemic Be Ebbing?
6. New research finds no association between white potato consumption (baked, boiled mashed) and obesity, Type 2 diabetes or systemic inflammation
7. Mayo Clinic: Obesity epidemic fueling rise in rheumatoid arthritis among women
8. Treating childhood obesity: A family affair
9. Rising Obesity Rates Might Mean More Rheumatoid Arthritis
10. Research May Point to New Obesity Treatments
11. U.S. Obesity Rate Set to Soar, Costing Billions: CDC
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... ... issues and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the ... several important health care topics including advance care planning, healthcare costs and patient ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, Dr. Omkar Marathe ... from the David Geffen School of Medicine at UCLA. He trained in Internal Medicine ... his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he had the ...
(Date:6/24/2016)... ... ... Those who have experienced traumatic events may suffer from a complex set of ... or alcohol abuse, as a coping mechanism. To avoid this pain and suffering, Serenity ... event. , Trauma sufferers tend to feel a range of emotions, from depression, guilt, ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... ... now offering micro-osteoperforation for accelerated orthodontic treatment. Dr. Cheng has extensive experience with ... Damon brackets , AcceleDent, and accelerated osteogenic orthodontics. , Micro-osteoperforation is a ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Haute Beauty Network, ... M. Weintraub as a prominent plastic surgeon and the network’s newest partner. ... the most handsome men, look naturally attractive. Plastic surgery should be invisible.” He ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 24, 2016  Global Blood Therapeutics, Inc. (GBT) (NASDAQ: ... novel therapeutics for the treatment of grievous blood-based ... closing of its previously announced underwritten public offering ... public offering price of $18.75 per share. All ... by GBT. GBT estimates net proceeds from the ...
(Date:6/24/2016)... , June 24, 2016 ... has announced the addition of the " Global ... This report ... provides an updated review, including its applications in various ... total market, which includes three main industries: pharmaceutical and ...
(Date:6/24/2016)... 2016 The Academy of Managed Care Pharmacy ... that would allow biopharmaceutical companies to more easily share ... formulary and coverage decisions, a move that addresses the ... The recommendations address restrictions in the sharing ... drug label, a prohibition that hinders decision makers from ...
Breaking Medicine Technology: