In addition to existing national and international guidelines and procedures of the AATB, NBF-BIS, and former EAMST, histopathological examination is added to the current bone bank procedure. Previous studies have found pathological abnormalities in 8%, and B-cell lymphomas in 2,2% of donor femoral heads (Palmer et al. 1999; Zwitser et al. 2009; Sugihara et al. 1999) . Though transmission of malign cells following transplantation has never been shown, femoral heads with histopathological abnormalities are excluded from allogenic bone transplantation.