title: Acetabular perforation after medial migration of the helical blade through the femoral head after treatment of an unstable trochanteric fracture with proximal femoral nail antirotation (PFNA): a case report.
abstract: The proximal femoral nail antirotation is a new generation of intramedullary device for the treatment of trochanteric femoral fractures, having a helical blade rather than a screw for suggested better purchase in osteoporotic bone. However, it is not free of complications. Few reports are available on postoperative perforation of the helical blade through the femoral head as a unique complication of proximal femoral nail antirotation. We report a 79-year-old woman with acetabular perforation after migration of the helical blade through the femoral head after an unstable trochanteric fracture, which was fixed with a proximal femoral nail antirotation.
authors.affiliation: Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, Gifu, Japan. ioritigers@yahoo.co.jp
authors.forename: Iori
authors.initials: I
authors.lastname: Takigami
authors.forename: Kazuichiro
authors.initials: K
authors.lastname: Ohnishi
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Ito
authors.forename: Akihito
authors.initials: A
authors.lastname: Nagano
authors.forename: Hisashi
authors.initials: H
authors.lastname: Sumida
authors.forename: Kaori
authors.initials: K
authors.lastname: Tanaka
authors.forename: Katsuji
authors.initials: K
authors.lastname: Shimizu
mesh_terms: D000077:Acetabulum / Q000293:injuries*; D000368:Aged; D017760:Bone Malalignment; D001858:Bone Nails / Q000009:adverse effects*; D005260:Female; D005270:Femur Head / Q000293:injuries*; D005593:Fracture Fixation, Internal / Q000009:adverse effects* / Q000295:instrumentation / Q000379:methods; D006620:Hip Fractures / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D011183:Postoperative Complications; D011474:Prosthesis Design; D012399:Rotation; D016896:Treatment Outcome