Aim. The aim of this study was to assess the mental status and sociodemographic data and their influence on the quality of life in patients after total hip replacement. Methods. SF-36, Soc-29, HADS, MPI, sociodemographic questionnaire were given to a cohort of 48 subjects who participated in this study (28 female, 20 male), with age range of 54-70 (mean 56). Questionnaires were administered to subjects two weeks before surgery and three months after surgery. Results. Patients after total hip replacement showed significant improvement in health-related quality of life in the summary scale of PCS and MCS and HADS-D and HADS-A. There were no significant differences in SOC and MPI. The postoperative: values of the PCS and the MCS for the whole group of patients correlated positively with the SOC values. Neuroticism (MPI) was also associated with the postoperative functioning in the mental and physical dimensions. Older patients had more likely to have worse score in MCS and PCS before and after surgery. Conclusions. Total hip replacement significantly improves patient health and well-being at three months after surgery. Sense of coherence, neurotism and old age influence quality of life.