title: Combined use of extensively porous coated femoral components with onlay cortical strut allografts in revision of Vancouver B2 and B3 periprosthetic femoral fractures.
abstract: BACKGROUND
  Periprosthetic femoral fractures following total hip arthroplasty are getting more prevalent. The aim of this study was to evaluate the clinical results of combined use of uncemented extensively porous coated femoral components with onlay cortical strut allografts in revision of Vancouver type B2 and B3 periprosthetic femoral fractures.
  
  
  METHODS
  Thirteen hips after total hip arthroplasty in 13 patients who suffered a Vancouver B2 or B3 periprosthetic fracture were treated with an uncemented extensively porous coated femoral component combined with onlay cortical strut allografts. Each patient was assigned a Harris hip score, and a visual analog scale (VAS) score for pain and satisfaction. Radiographs were examined for component stability, fracture site and allograft-host union and allograft reconstruction.
  
  
  RESULTS
  At an average of 5.3-year follow-up, no patient required repeat revision. The average Harris hip score was (71.8 +/- 6.3) points, the pain VAS score was (16.6 +/- 4.3) points, and the patient satisfaction VAS score was (81.5 +/- 5.7) points. Radiographic examination showed no detectable loosening of the prostheses, and 12 cases were presented fixation by osseointegration and the other one was stable fibrous ingrown fixation. All fractures united for (5.2 +/- 1.4) months in average. And all onlay strut allografts united to host bone for about (11.5 +/- 2.6) months.
  
  
  CONCLUSIONS
  Combined use of uncemented, long stemmed, extensively porous coated implant with cortical onlay strut allografts can achieve good clinic results and high rate of union for both fracture site and allograft-host bone junction. This technique could be used routinely to augment fixation and healing of Vancouver B2 and B3 periprosthetic fractures.
authors: Department of Orthopeadic Surgery, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, China.
authors: Hao-bo
authors: HB
authors: Wu
authors: Shi-gui
authors: SG
authors: Yan
authors: Li-dong
authors: LD
authors: Wu
authors: Rong-xin
authors: RX
authors: He
authors: Xiang-hua
authors: XH
authors: Wang
authors: Xue-song
authors: XS
authors: Dai
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D016025:Bone Transplantation / Q000379:methods*; D005260:Female; D005264:Femoral Fractures / Q000145:classification / Q000000981:diagnostic imaging / Q000601:surgery*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014184:Transplantation, Homologous; D016896:Treatment Outcome