[Unusual aspects of bone fractures in Paget's disease].

Because of their specific biological and vascular condition, bones affected by Paget's disease require special treatment in case of fracture. Observations on four patients are reported because of their originality; the two first involved a rare type of pelvic fracture, one ischiatic, the other iliac. One of the others was a deformation that required amputation. The last patient, a victim of a diaphyseal femoral fracture, had to undergo centromedullary pinning; but because there was massive destruction of the periostial and medullary circulations during the operation, extensive osteonecrosis due to ischaemia occurred which was very painful and disabling. Thus, in spite of an over abundance of vascular tissue, such circulatory repercussions must be avoided in surgical treatment of fractures of bones affected by Paget's disease.