Background: Hip joint replacement is the replacement of a critically injured hip with an artificial joint. It is an orthopedic procedure which aims to improve the management of diseases of the hip joint that have not responded well to conventional medical treatment or lifestyle changes. Aim of study: To assess daily living activities for older adults post hip joint replacement. Research Design: A descriptive analytical design was utilized in this study. Setting: The study was conducted at outpatient orthopedic clinics in El Helal hospital. Study sample: A purposive sample was collected; it consisted of 126 older adults with HJR attending orthopedic out-patient clinic, both genders, from one to three months after surgery: Tool: one tool was used in this study. Structured Interviewing Questionnaire included five parts I)- Demographic characteristic of the patient, II) Subjects medical history(Past medical history, current medical history). III: Patient's knowledge about factors leading to hip joint replacement IV) Patients reported practices. V) Katz Index of Independence in Activities of Daily Living. Results: The age of older adults with hip joint replacement ranged between 60 - < 65 and 58.7% of them were males. 57.1% of them were unable to mobile,88.9% diagnosed their disease through medical examination.78.6% of the studied older adults had unsatisfactory level of total knowledge&21.4 of older adults had satisfactory level of total knowledge,73.8% of the studied older adults had inadequate level  of practices post hip joint replacement while 26.2% of them had adequate level regarding to total score level of reported practices. Conclusion: Hip replacement surgery is most common among the older adults between rang 60-<65 years. It is more prevalent among males more than female, there was a statistically significant relation between socio -demographic characteristics of the older adults and their knowledge after hip joint replacement. Also, there was a statistically significant relation between socio-demographic characteristics of the older adults and their practice after hip joint replacement. Moreover, there was highly statistically significant relation between knowledge of the older adults and their activities of daily living after hip joint replacement. Also between practices of the older adults and their activities of daily living after hip joint replacement. Recommendation: Educational program for older adults to raise their awareness about hip joint replacement related factors should be apriority to ensure early diagnosis of disease.