Article

Musculoskeletal findings in obese subjects before and after weight loss following bariatric surgery

Arthritis Translational Research Program, University Hospitals of Cleveland, Cleveland, OH, USA.
International Journal of Obesity (Impact Factor: 5). 02/2007; 31(1):114-20. DOI: 10.1038/sj.ijo.0803349
Source: PubMed

ABSTRACT

To determine the point prevalence of painful musculoskeletal (MSK) conditions in obese subjects before and after weight loss following bariatric surgery.
Longitudinal, interventional, unblended.Subjects:Forty-eight obese subjects (47 women, one man, mean age 44+/-9 years; mean body mass index (BMI) 51+/-8 kg/m(2)) recruited from an academic medical center bariatric surgery program.
Comorbid medical conditions; MSK findings; BMI; Western Ontario McMaster Osteoarthritis Index (WOMAC) for pain, stiffness and function; and SF-36 for quality of life.
Consecutive subjects were recruited from the University Hospitals of Cleveland Bariatric Surgery Program. Musculoskeletal signs and symptoms and non-MSK comorbid conditions were documented at baseline and at follow-up. Subjects completed the SF-36 and the WOMAC questionnaires. Analyses were carried out for each MSK site, fibromyalgia syndrome (FMS) and for the cumulative effect on the spine, upper and lower extremities. The impact of change in comorbid medical conditions, BMI, physical and mental health domains of the SF-36 on the WOMAC pain subscale score was evaluated. SF-36 outcomes were compared to normal published controls.
Forty-eight subjects were available for baseline and a follow-up assessment 6-12 months after gastric bypass surgery. They lost an average of 41+/-15 kg and the mean BMI decreased from 51+/-8 to 36+/-7 kg/m(2). Baseline comorbid medical conditions were present in 96% before surgery and 23% after weight loss. There was an increased prevalence of painful MSK conditions at baseline compared to general population frequencies. Musculoskeletal complaints had been present in 100% of obese subjects before, and 23% after weight loss. The greatest improvements occurred in the cervical and lumbar spine, the foot and in FMS (decreased by 90, 83, 83 and 92%, respectively). Seventy-nine percent had upper extremity MSK conditions before and 40% after weight loss. Before surgery, 100% had lower extremity MSK conditions and only 37% did after weight loss. The WOMAC subscale and composite scores all improved significantly, as did the SF-36((R)). Change in BMI was the main factor impacting the WOMAC pain score.
There was a higher frequency of multiple MSK complaints, including non-weight-bearing sites compared to historical controls, before surgery, which decreased significantly at most sites following weight loss and physical activity. These benefits may improve further, as weight loss may continue for up to 24 months. The benefits seen with weight loss indicate that prevention and treatment of obesity can improve MSK health and function.

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Available from: Peter T Hallowell, Mar 04, 2015
    • "Current evidence suggests that intentional weight-loss provides benefits in controlling cardiovascular risk factors and reducing medications for weightrelated health conditions [3]. One study reported that substantial weight loss following gastric bypass surgery resulted in an 83% improvement in foot complaints [34]. Similarly, McGoey et al. [35] found that the proportion of morbidly obese people suffering from foot pain was reduced from 21% to 1% following weight loss surgery. "
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    • "This hypothesis is supported by studies showing the association between BMI and the development of OA in non-weight bearing joints, such as the hands [15,33], as well as the link between high BMI and other rheumatic diseases, such as fibromyalgia [34-36]. In a study aimed at weight loss among an obese working population [37] upper extremity symptoms (except for shoulder complaints) decreased with weight loss. In this study it was suggested that many obese subjects use their upper extremities as weight bearing limbs when arising from a seated position, which may account for the increased upper extremity symptoms in obese subjects. "
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