The aim of the study is to translate and culturally adapt Western Ontario And MacMaster Osteoarthritis Index into Urdu language and to investigate its reliability and validity Pakistani population with primary knee osteoarthritis while assessing its correlation with Lequesne Index.

As per preceding commendation, Western Ontario And MacMaster Osteoarthritis Index will be translated into Urdu language from its English version and adapted culturally in Pakistan. Among primary knee osteoarthritis population, Western Ontario And MacMaster Osteoarthritis Index will be distributed among 87 patients recruited by convenience sampling technique under the pre-defined inclusion and exclusion criteria after signing consents forms. For testing inter-observer reliability and intra-observer reliability of Western Ontario And MacMaster Osteoarthritis Index and Lequesne Index will be administrated by two observers, on the same day, with a time interval of 2 hours between 1st and 2nd conduction. As for the 3rd conduction, it will be carried out after seven days by the first observer, for intra-observer assessment. Statistical Package of Social Sciences software version 24 will be used for the purpose of data entry and analysis. Internal consistency will be assessed by using an intra-class correlation coefficient. The Western Ontario And MacMaster Osteoarthritis Index will be evaluated for content validity, construct validity, criterion validity and responsiveness

Inclusion Criteria:

• Male and Female patients
• Age above 40 years
• Participants with primary knee Osteoarthritis
• Patients willing to participate.

Exclusion Criteria:

• History or presence of ;
• Rheumatic diseases,severe articulation inflammation and cardiac disease.
• Participants with secondary knee Osteoarthritis.

Pakistani population with primary knee Osteoarthritis will be included in the study.