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Therapeutic Response in Osteoarthritis Using the Criteria of the OARSI (Osteoarthritis Research Society International)

Purpose: To evaluate a patient with osteoarthritis following therapy using the criteria of the OARSI.

Description

The response of a patient with osteoarthritis to a therapeutic intervention can be determined using the criteria of the Osteoarthritis Research Society International (OARSI). While the study involved patients with hip or knee involvement, the criteria can be applied to osteoarthritis in other sites.


Parameters:

(1) pain

(2) function

(3) patient's global assessment

 

A patient is considered a responder if one of the following is present after therapy:

(1) the improvement in pain is high

(2) there is at least moderate improvement in at least 2 of the following:

(2a) pain

(2b) function

(2c) global assessment

 

If the patient does not meet the criteria for responder, then s/he is classified as a nonresponder.

 

If a 100 mm VAS is used to gauge symptoms, then the response can be scored in terms of Normalized Units (NU), with 1 mm on the VAS scale = 1 NU.

 

Parameter

Change

Reduction in Symptoms and in NU

pain

high

>= 45% and >= 20 NU

pain

moderate

>= 15% and 10 - 19 NU

function

moderate

>= 30% and >= 15 NU

global assessment

moderate

>= 35% and >= 10 NU

from Figure 4, page 401


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Specialty

Objective

ICD-10