 
         
         Summary
         
         A clinical study of patients with mild haemophilia A to document the frequency and
            severity of arthropathy has not been previously published. We studied ankle arthropathy
            in 34 patients with mild/moderate haemophilia A. The patients were assessed for the
            presence and severity of pain, and by the physical and radiological scoring systems
            for the evaluation of haemophilic arthropathy recommended by the World Federation
            of Haemophilia (WFH). Of the 34 patients, 16 (47%) had ankle pain, which was of moderate
            to severe degree in nine patients, and associated with limitation of physical activities
            in 13 patients. Of 33 patients examined by radiology 17 (52%) were positive for ankle
            arthropathy, and of these, 16 were also positive by the physical score. The presence
            and severity of ankle arthropathy was more common in patients with a one-stage factor
            VIII level of less than or equal to 11 IU/ dl. There was a significant relationship
            between the presence of ankle arthropathy and a history of bleeds into the ankle joint
            as a child. We conclude that arthropathy of the ankle in these patients is common,
            is often severe and disabling, and is due to episodes of bleeding into the ankle joint
            during childhood.
            
         
         Keywords
Mild haemophilia - moderate haemophilia - ankle arthropathy - factor VIII - Pettersson
            score