Modified Oswestry Disability Index Calculator

Modified Oswestry Disability Index Formula:

\[ \text{Index (\%)} = \left( \frac{\text{Sum Scores}}{60} \right) \times 100 \]

Index:

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1. What is the Modified Oswestry Disability Index?

The Modified Oswestry Disability Index is a patient-completed questionnaire that assesses functional disability in patients with low back pain. It evaluates how back pain affects various daily activities and provides a percentage score indicating the level of disability.

2. How Does the Calculator Work?

The calculator uses the Modified Oswestry Disability Index formula:

\[ \text{Index (\%)} = \left( \frac{\text{Sum Scores}}{60} \right) \times 100 \]

Where:

\( \text{Sum Scores} \) — Total points from all sections (0-60 points)
\( 60 \) — Maximum possible score
\( \text{Index} \) — Disability percentage (0-100%)

Explanation: The questionnaire consists of 10 sections, each scored from 0-5 points. The total score is converted to a percentage representing the level of disability.

3. Importance of Disability Assessment

Details: The Modified Oswestry Disability Index is widely used in clinical practice and research to measure functional limitations due to low back pain, track treatment progress, and determine disability levels for rehabilitation planning.

4. Using the Calculator

Tips: Enter the total sum score from the Modified Oswestry Disability Questionnaire. The score must be between 0-60 points. The calculator will automatically compute the disability percentage.

5. Frequently Asked Questions (FAQ)

Q1: What do the different percentage ranges indicate?
A: 0-20% minimal disability, 21-40% moderate disability, 41-60% severe disability, 61-80% crippled, 81-100% bed-bound or exaggerating symptoms.

Q2: How is the questionnaire administered?
A: Patients complete 10 sections covering pain intensity, personal care, lifting, walking, sitting, standing, sleeping, sex life, social life, and traveling.

Q3: What is the difference between original and modified versions?
A: The modified version replaces the "sex life" section from the original with "social life" and "traveling" sections, making it more comprehensive.

Q4: How often should the index be measured?
A: Typically measured at initial assessment and periodically during treatment to monitor progress and adjust rehabilitation plans.

Q5: Is this index validated for research use?
A: Yes, the Modified Oswestry Disability Index is well-validated, reliable, and widely used in clinical research studies worldwide.