Cilj: Cilj rada bio je ispitati oblik Blumensaatove linije te utvrditi položaj lateralnog interkondilarnog grebena u odnosu na nju. Ispitanici i metode: U radu je korišteno 12 preparata femura sa Zavoda za anatomiju Medicinskog fakulteta u Rijeci. Na svakom preparatu tankom savitljivom žicom obilježen je lateralni interkondilarni greben. Učinjena je postranična rendgenska snimka femura uz potpuno preklapanje kondila. Na snimkama je analiziran oblik Blumensaatove linije, razlika u rendgenološkoj gustoći prikaza pojedinih dijelova te položaj lateralnog interkondilarnog grebena u odnosu na Blumensaatovu liniju. Rezultati: Na rendgenološkom prikazu Blumensaatova linija bila je ravna u 25 % preparata. U 75 % preparata stražnji dio linije bio je konveksan u smjeru prema distalno. S obzirom na radiografsku gustoću Blumensaatove linije mogla se podijeliti u tri dijela. Prednji i stražnji dio imali su gustoću intenziteta kortikalne kosti, dok je gustoća srednjeg dijela odgovarala intenzitetu spongiozne kosti. Lateralni interkondilarni greben spaja se s Blumensaatovom linijom u točki koja stražnji segment dijeli u omjeru 58 % : 42 %. Lateralni greben s Blumensaatovom linijom zatvara kut od 62.40 stupnjeva. Zaključak: Blumensaatova linija u 75 % analiziranih preparata nije ravna, već je u stražnjem dijelu zaobljena s konveksitetom usmjerenim prema distalno. Na profilnoj RTG snimci LIR koljena zatvara kut od 62.40 stupnjeva. Aim: The aim of this study was to analyze the shape of the Blumensaat's line and the relationship with lateral intercondylar ridge on the lateral radiographic view. Patients and Methods: On twelve femoral specimens, the lateral intercondylar ridge were labeled with the thin wire. A full lateral view with the distal femur was taken. At the X-ray we analyzed the radiographic shape of the Blumensaat’s line and a possible difference of the radiographic density during its course. The angle between lateral intercondylar ridge and Blumensaat’s line was calculated as well. Results: The Blumensaat’s line was straight in 25% of specimens. In 75% the posterior part had convexity. Regarding the radiographic density the BL could be divided into three parts. The density of the anterior and posterior was similar as the cortical bone, while the middle part corresponds to the cancellous bone. The posterior part was the longest. The lateral intercondylar ridge and the Blumensaat’s line formed the angle of average 62,40 and intersect with the LIR at the point which divides the posterior part of the BL at the 58%:42% ratio. Conclusion: In 25% the Blumensaat’s line was straight. In 75% of the specimens the posterior convexity was observed. The lateral interc ondylar ridge and the Blumenssat’s line formed the angle of the 62,50. They intersected at the point which divides the posterior part in the 58:42 ratio.