Purpose of this Research is to convert Ronald Morris Disability Questionnaire into Urdu language and check the accuracy and logic in Pakistani low back pain population. Also check its correlation with Oswestry Disability Index and Visual Analogue Scale.

The Ronald Morris Disability Questionnaire will be translated into Urdu and culturally adapted for people with low back pain. Ronald Morris Disability Questionnaire will be given to 80 people who will be chosen by using a convenient sampling method. Method of sampling based on pre-determined inclusion and exclusion criteria. To examine intra-observer reliability of the final Ronald Morris Disability Questionnaire, two observers will fill out Oswestry Disability Index and Visual Analogue Scale questionnaires on the same day to test inter-observer evaluation. After 30 minutes of the initial treatment, the second application will be applied. The first observer will do the third assessment after seven days. Statistical Package of Social Sciences Version 24 will be used to enter and analyse data. The alpha value of Cronbach's alpha will be examined.

Inclusion Criteria:

• Average Age of patient 48 years.
• Patient with chronic low back pain have at least 3 month duration .
• Patient with mechanical Low Back Pain

Exclusion Criteria:

• Patient with non - mechanical Low Back Pain
• Patient have neurological deficits .

Pakistani population with Chronic Low back pain.