<bold>The aim of the study</bold> was the comparison of quality of life as a result of multiple injury in the aspect of disability.
<bold>Material and methods.</bold> The study group comprised 1259 patients treated effectively in the years 1989-2003 whose degree of injuries amounted to at least 18 scores in the Injury Severity Scores (ISS). The prospective study included 827 (65.9%) patients. Their quality of life as a disability was determined.
<bold>Results.</bold> The results of the treatment in the successive 5-years periods were compared and statistically analyzed. In the first 5 years 71.8% persons were assessed as disable. In the second 5-years period 51.5% were found to be disabled. In the third 5-years period 47.3% of people present disability. The decrease in the number of individuals disable and increase in quality of life were observed.
<bold>Conclusions.</bold> The highest quality of live improvement and the decrease in the amount of the disabled people was noted in the second 5-years period and was statistically significant related to first 5 years. The improvement of quality of life was decreased also in the third 5-years period related to second 5-years period, but the difference was not statistically significant. The increase of injuries severity and age was one of reasons of reduction positive changes in the last 5-years period.