PURPOSE OF THE STUDY In this study, it was aimed to examine the preoperative and postoperative quality of life and psychiatric symptoms of the patients with primary coxarthrosis after total hip arthroplasty. MATERIAL AND METHODS 150 patients undergone total hip arthroplasty were involved in this study. The socio-demographical data form prepared by the researchers was utilized before and after the operation in order to demonstrate disease-related socio-demographical characteristics of the patient. The Quality of Life Scale Short Form (SF-36), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Harris Hip Score (HHS) and Visual Analog Scale (VSA) were implemented in the preoperative period and at 6th and 12th week after the operation. RESULTS Of the patients involved in study, 28.7% were male and 71.3% were female. Their mean age was 58.34±11.92 year. While statistically significant differences were found between the preoperative and postoperative periods in terms of physical function, physical role limitation, emotional role limitation, energy, social function, pain, and general health subscales of SF-36, no significant differences were found relating mental health subscale. In BAI, BDI, VAS, and HHS comparison, statistically significant differences were found between the preoperative and postoperative periods, except for BAI. CONCLUSIONS In this study, it was determined that primary coxarthrosis affects significantly the quality of the patients' lives in a negative way and can be accompanied by mental symptoms. After total hip arthroplasty, significant improvement was observed in quality of life, depression and pain scores. Key words: total hip prosthesis, quality of life, mental symptoms.