Background: Revision total hip arthroplasty is indicated for most
periprosthetic fractures that occur around the stem of the femoral implant.
The purpose of the present study was to assess the results and complications
of revision total hip arthroplasty for the treatment of periprosthetic femoral
Methods: We evaluated 118 hips in 116 patients who underwent
revision total hip arthroplasty because of an acute Vancouver type-B
periprosthetic femoral fracture. The femoral implant used for the revision was
a cemented stem in forty-two hips, a proximally porous-coated uncemented stem
in twenty-eight, an extensively porous-coated stem in thirty, and an
allograft-prosthesis composite or tumor prosthesis in eighteen. The mean
duration of follow-up was 5.4 years.
Results: Kaplan-Meier analysis demonstrated that the probability of
survival was 90% at five years and 79.2% at ten years with revision or removal
of the femoral implant for any reason as the end point. Sixteen femoral
components were rerevised: ten were rerevised because of loosening; three,
because of loosening in association with a fracture nonunion; two, because of
recurrent dislocation; and one, because of a new periprosthetic fracture.
Additionally, six femoral implants were resected because of deep infection
(five) or prosthetic loosening (one). Radiographs of the ninety-six hips with
a surviving implant showed that twenty-one had evidence of loosening of the
femoral implant, four had a nonunion of the femoral fracture, and two had both
a nonunion and loosening of the femoral implant.
Conclusions: Revision total hip arthroplasty for the treatment of a
periprosthetic fracture around the stem of the femoral implant successfully
restored function for most patients. The greatest long-term problems were
prosthetic loosening and fracture nonunion. Better results were seen when an
uncemented, extensively porous-coated stem was used.
Level of Evidence: Therapeutic study, Level IV (case
series [no, or historical, control group]). See Instructions to Authors for a
complete description of levels of evidence.