Background:: Joint bleeds (JB) are reported in a minority of patients with von Willebrand disease (VWD) but may lead to structural joint damage. Prevalence, severity and impact of JB in VWD are largely unknown. Objectives:: The aim of this study was to assess JB prevalence, onset, treatment and impact on health-related quality of life (HR-QoL) and joint integrity in moderate and severe VWD. Methods:: In the Willebrand in the Netherlands study 804 moderate and severe VWD patients [von Willebrand factor (VWF) activity ≤30U dL-1] completed a questionnaire on occurrence, sites and consequences of JB. To analyse JB number, onset, treatment and impact on joint integrity we additionally performed a patient-control study on medical file data comparing patients with JB to age, gender, factor VIII (FVIII)- and VWF activity matched VWD patients without JB. Results:: Of all VWD patients 23% (184/804) self-reported JB. These 184 patients reported joint damage more often (54% vs. 18%, P < 0.001) and had lower HR-QoL (SF36, P < 0.05) compared to VWD patients not reporting JB. Of 55 patients with available JB data, 65% had the first JB before age 16. These 55 patients used more clotting factor concentrate (CFC; median dose 43 vs. 0 IE FVIII kg-1 year-1, P < 0.001), more often had X-ray joint damage (44% vs. 11%, P = 0.001] and chronic joint pain (44% vs. 18%, P = 0.008) compared to 55 control VWD patients without JB. Conclusion:: In conclusion, joint bleeds are reported by 23% of moderate and severe VWD patients, mostly start in childhood, are associated with more CFC use, joint pain, lower HR-QoL and significantly more radiological and self-reported joint damage.

Arthropathy, Joint bleeds, Joint damage, Joint pain, Quality of life, Von Willebrand disease
dx.doi.org/10.1111/hae.12670, hdl.handle.net/1765/84284
Haemophilia
Department of Pediatrics

van Galen, K.P.M, Sanders, Y.V, Vojinovic, U, Eikenboom, J.C.J, Cnossen, M.H, Schutgens, R, … Mauser-Bunschoten, E.P. (2015). Joint bleeds in von Willebrand disease patients have significant impact on quality of life and joint integrity: A cross-sectional study. Haemophilia, 21(3), e185–e192. doi:10.1111/hae.12670