Navigate Up

UPMC/University of Pittsburgh Schools of the Health Sciences
For Journalists
Allison Hydzik
Telephone: 412-647-9975
Communications Specialist
Telephone: 412-738-3511 or 412-586-9778
Patient & Other Inquiries

Study Identifies Patients Most Likely to Have Joint Pain Reduction After Bariatric Surgery

PITTSBURGH, Nov. 4, 2015 – In the three years following bariatric surgery, the majority of patients experience an improvement in pain and walking ability, according to the preliminary results of a University of Pittsburgh Graduate School of Public Health-led analysis presented today in Los Angeles at ObesityWeek, the annual international conference of the American Society for Metabolic & Bariatric Surgery and The Obesity Society.
The study, funded by the National Institutes of Health (NIH), went on to identify key patient characteristics that can indicate which people are the most and the least likely to see improvement, a finding that could allow clinicians to identify patients who may require additional interventions to improve outcomes.
“Our study found that clinically meaningful improvements in bodily pain, specific joint pain and both perceived and objectively measured physical function are common following bariatric surgery. In particular, walking is easier, which impacts patients’ ability to adopt a more physically active lifestyle. However, some patients continue to have significant pain and disability,” said lead author Wendy King, Ph.D., associate professor in the Department of Epidemiology at Pitt Public Health. “Our hope is that these data will help patients and clinicians develop realistic expectations regarding the impact of bariatric surgery on these aspects of their lives.”
Dr. King and her colleagues followed 2,221 patients participating in the Longitudinal Assessment of Bariatric Surgery-2 , a prospective study of patients undergoing weight-loss surgery at one of 10 different hospitals across the U.S.
Through three years of follow-up, 50 to 70 percent of adults with severe obesity who underwent bariatric surgery reported clinically important improvements in bodily pain, physical function and usual walking speed. About three-quarters of the participants with severe knee and hip pain or disability before surgery experienced improvements in symptoms indicative of osteoarthritis. In addition, over half of participants who had a mobility deficit prior to surgery did not post-surgery.
Older age, lower income, more depressive symptoms and pre-existing medical conditions, including cardiovascular disease and diabetes before surgery, were among the factors independently associated with a lower likelihood of improvement in pain and mobility post-surgery, while greater weight loss, greater reduction in depressive symptoms and remission or improvement in several medical conditions were associated with greater likelihood of improvement.
“Functional status is an extremely important aspect of health that has not been as well-studied as other conditions that change following bariatric surgery and this study sheds light on specific factors that may affect improvements in individuals with joint pain who undergo these procedures,” said study co-author Anita Courcoulas, M.D., M.P.H. , chief of minimally invasive bariatric and general surgery in Pitt’s School of Medicine.
Additional investigators on this research are Jia-Yuh Chen, Ph.D., Steven H. Belle, Ph.D., and William F. Gourash, C.R.N.P., M.S.N., all of Pitt; Gregory F. Dakin, M.D., of Weill Cornell Medical College; Katherine A. Elder, Ph.D., of Pacific University; David R. Flum, M.D., M.P.H., and Marcelo W. Hinojosa, M.D., both of the University of Washington; James E. Mitchell, M.D., of the Neuropsychiatric Research Institute; Bruce M. Wolfe, M.D., of the Oregon Health & Science University; and Susan Z. Yanovski, M.D., of the NIH National Institute of Diabetes and Digestive and Kidney Disease (NIDDK).
This clinical study was a cooperative agreement funded by the NIDDK. Grant numbers: DCC -U01 DK066557; Columbia – U01-DK66667 (in collaboration with Cornell University Medical Center CTRC, Grant UL1-RR024996); University of Washington – U01-DK66568 (in collaboration with CTRC, Grant M01RR-00037); Neuropsychiatric Research Institute – U01-DK66471; East Carolina University – U01-DK66526; UPMC – U01-DK66585 (in collaboration with CTRC, Grant UL1-RR024153); and Oregon Health & Science University – U01-DK66555.

UPMC | Affiliated with the University of Pittsburgh Schools of the Health Sciences Supplemental content provided by Healthwise, Incorporated. To learn more, visit

For help in finding a doctor or health service that suits your needs, call the UPMC Referral Service at 412-647-UPMC (8762) or 1-800-533-UPMC (8762). Select option 1.

UPMC is an equal opportunity employer. UPMC policy prohibits discrimination or harassment on the basis of race, color, religion, ancestry, national origin, age, sex, genetics, sexual orientation, gender identity, marital status, familial status, disability, veteran status, or any other legally protected group status. Further, UPMC will continue to support and promote equal employment opportunity, human dignity, and racial, ethnic, and cultural diversity. This policy applies to admissions, employment, and access to and treatment in UPMC programs and activities. This commitment is made by UPMC in accordance with federal, state, and/or local laws and regulations.

Medical information made available on is not intended to be used as a substitute for professional medical advice, diagnosis, or treatment. You should not rely entirely on this information for your health care needs. Ask your own doctor or health care provider any specific medical questions that you have. Further, is not a tool to be used in the case of an emergency. If an emergency arises, you should seek appropriate emergency medical services.

Pittsburgh, PA, USA |