Age estimation of unknown skeletal remains is very important in forensic medicine. Morphologic methods are fast and easy to use for purpose of age determination. The sternal ends of the ribs are a reliable method of age estimation from late adolescence to old age. Iscan et al developed a phase analysis method for the right 4(th) rib that was sex and race specific. The purpose of this study is to determine the accuracy of the standards of age estimation from the right 4(th) and other rib using the phase analysis for the Turkish population. The sample consisted of right and left 3(rd), 4(th) and 5(th) ribs from 34 Turkish women and 76 men. There were statistically significant variations found on the right 5(th), left 3(rd), 4(th), and 5(th), ribs according to these standards in men for phases 5, 6, and 7. For women, all the right and left ribs included in this study were in concordance with right 4(th) rib standards in all phases.