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Abstract : Hemophilia is a congenital disease resulting from a severe coagulation factor VIII or factor IX deficiency. This condition causes the emergence of target joints, which in 30% of hemophilic patients develops hemophilic arthropathy. We reported three cases of hemophilic arthropathy that were examined using conventional radiology modalities, ultrasound and 1.5T MRI at Dr. Kariadi Semarang. Conventional radiological examinations were assessed using the Arnold Hiltgartner qualitative scale and the Petterson quantitative score. The first case was an 11 years old child with type B hemophilia, and right knee pain with an Arnold Hiltgartner scale of 4 and a Petterson score of 7. An MRI examination obtained an IPSG MRI score of 7. The second case is an 8 years old child with hemophilia type B who complains of a swollen right knee. On examination, the Arnold Hiltgartner scale was 4, and the Petterson score was 7. The results of the ultrasound examination showed a HEAD-US score of 6. The third case is a 28 years old man with hemophilia type A and right knee pain, with an Arnold Hiltgartner scale of 5 and a Petterson score of 12. In conclusion, conventional radiography is a sensitive initial examination for moderate and severe degrees of hemophilic arthropathy. Ultrasound modality is an effective follow-up examination in assessing soft tissue abnormalities and osteochondral changes, while MRI has the best sensitivity for detecting hemophilic arthropathy.