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Rheumatoid arthritis patients have low expectations after knee replacement surgery
Date:11/5/2011

is patients that matched these RA patients in terms of age, gender and function. Investigators gauged function using the Lower Extremity Activity Score (LEAS), a score that quantifies how much activity a person is capable of performing. The scale ranges from a person being confined to bed all day to participating in vigorous physical activity such as competitive level sports.

The researchers identified 62 RA patients and matched them to 124 osteoarthritis controls; 81.7 percent were women and the average age was 64.7 years. The average LEAS was 8.7, which corresponds to being able to walk around the house and for several blocks without assistance.

The investigators measured pain, stiffness and function prior to surgery, using a tool called the Western Ontario and McMaster Universities Arthritis Index (WOMAC), and found that patients with RA had worse scores. "Even when you try to match these patients to make them similar, it really does seem like this chronic disease makes these patients sicker, less happy, less functional and clearly they have worse expectations," Dr. Mandl said.

The investigators measured patient expectations prior to surgery using a validated tool called the Hospital for Special Surgery Expectations Survey, with 100 being the highest score and 0 being the lowest. RA patients had a lower overall expectation score compared with osteoarthritis patients, 73.7 versus 79.8, a difference that was statistically significant (P=0.03) and clinically meaningful. Patients with RA also had statistically significant lower expectations for several individually measured items such as whether the surgery will improve the ability to walk short distances, improve the ability to go up stairs, improve the ability to perform daily activities such as household chores and improve the ability to exercise.

"When people report if they are satisfied, a lot of it is not just related to actual objective measures. It has to do with their exp
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Contact: Phyllis Fisher
phyllis.fisher@gmail.com
212-606-1197
Hospital for Special Surgery
Source:Eurekalert

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