Background: The physical examination provides only limited information on the presence and extent of tendon pathology in RA patients and tenosynovitis is often misinterpreted as joint inflammation. Objectives: To evaluate the prevalence of tendon involvement in rheumatoid arthritis patients, compare the ultrasound finding with clinical examination and determine the factors that potentially associated with a more frequent tendon involvement in RA patients. Methods: 30 patients with RA and 20 healthy controls matched by age, sex and body mass index (BMI) are subjected to; history and clinical examination, ultrasonography examination of shoulder, elbow, wrist, hand and knee joints. The RA patient are subjected to; measurement of the disease activity, laboratory measurement of serum rheumatoid factor and ESR, and X-ray wrist, hand and feet.Results: In this study, nearly 20 (66.7%) of the 30 recruited patients showed at least one inflamed tendon, in 12 (40%) of them damage was detected in at least one tendon, while in only one patient tendon enthesitis was detected. Conclusion: The present study provides prevalence of ultrasound detected tendon abnormalities in RA patients, and being the US can be time-consuming, the identification of the most commonly affected sites may facilitate US examination that can be focused on the target tendons in RA.