Patients are seen routinely in clinic by specialist haemophilia physiotherapists who assess the patients using the Haemophilia Joint Health Score tool (HJHS). Trial participants will be seen during their routine clinic visits and will be seen by a clinician and the physiotherapist who will carry out the routine assessment along with the HEAD-US scan.
Patients will be seen a maximum of 4 times throughout the year from registration of the first patient, according to their visit schedule, but will only be scanned at the first visit.
Results will be analysed to determine if the treatment decision-making is influenced by the results of the scan
