OBJECTIVES: Total hip and knee arthroplasty operations are commonly performed to improve patients’ quality of life. The aim of this study is evaluation of patients’ quality of life of preoperation and early postoperation after total hip and knee arthroplasty. METHODS: This study included 26 patients undergoing total hip and knee arthroplasty. After the literature review, 15-items questionnaire was prepared for collecting data related  to sociodemographic, medical and functional status information, including age, sex, previous hip and knee arthroplasty and pain level. Quality of life were measured by using the EQ-5D and Visual Analog Scale (VAS). During the study, questionarries were administered to patients  2 times: one week prior to operation and 45 days following operation. RESULTS: The average age of participants was  67,12 years (SD: 10,527). Participants were composed of 80,8% females and 19,2% males. Small improvements were reported for pain and functional status after the operations, while large changes were seen in the patients’ quality of life. The EQ-5D scores improved significantly preoperatively to postopertively (p<0,05) (0,322 vs 0,844).  Similarly, there was a significant improvement in VAS scores preoperatively to postoperatively (p<0,05) (4,72 vs 7,78). CONCLUSIONS: Total hip and knee arthroplasties are well accepted as reliable and suitable surgical procedures to return patients to function and improve the quality of life of patients'.