LAUSR

Highlights • Paget disease of the bone, while exceptionally rare in Asian populations, may be responsible for the loosening of arthroplasty components.• The correct diagnosis of Paget disease of the bone was delayed, resulting in the rapid destruction of the pelvic bone.• It is advisable that older patients with suspicious bone lesions be further evaluated and that their serum alkaline phosphatase levels be measured.• The use of preoperative antipagetic medication for reducing PDB activity should be considered. It may decrease the risk of implant loosening.