Acta Medica Okayama volume74 issue2
2020-04 発行

Non-traumatic Atypical Peri-implant Femoral Fracture at the Distal Screw after Short Femoral Nail Fixation for a Pertrochanteric Fracture

Yamamoto, Norio Department of Orthopedic Surgery, Unnan City Hospital
Dan’ura, Tomoyuki Department of Orthopedic Surgery, Unnan City Hospital
Noda, Tomoyuki Department of Musculoskeletal Traumatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Kaken ID
Ozaki, Toshifumi Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Kaken ID researchmap
Publication Date
2020-04
Abstract
This is the second report of an atypical peri-implant femoral fracture occurring at the distal screw after intramedullary nail fixation of a pertrochanteric fracture. A 94-year-old Japanese female with a 5-year history of alendronate intake presented with prodromal pain in her right thigh after intramedullary nail fixation. Plain radiographs showed an incomplete noncomminuted transverse fracture at the distal screw, suggesting an atypical peri-implant femoral fracture. The pathogenesis of an atypical peri-implant femoral fracture could be a combined systemic bone metabolism disorder and repetitive overloading at the screw, similar to the pathogenesis of an atypical periprosthetic femoral fracture around stem implantation.
Document Type
Case Report
Keywords
atypical femoral fracture
insufficiency fracture
bisphosphonate
atypical peri-implant femoral fracture,
atypical periprosthetic femoral fracture
Link to PubMed
Thumnail 74_2_151.pdf 2.96 MB