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The Journal of arthroplasty v.33 no.1, 2018년, pp.268 - 272   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Does the Additional Articulation in Retrieved Bipolar Hemiarthroplasty Implants Decrease Trunnionosis Compared to Total Hip Arthroplasty?

Del Balso, Christopher (Division of Orthopaedic Surgery, Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London Health Sciences Centre, University Hospital, London, Ontario, Canada ) ; Teeter, Matthew G. (Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada ) ; Tan, Sok C. (Division of Orthopaedic Surgery, Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London Health Sciences Centre, University Hospital, London, Ontario, Canada ) ; Lanting, Brent A. (Division of Orthopaedic Surgery, Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London Health Sciences Centre, University Hospital, London, Ontario, Canada ) ; Howard, James L. (Division of Orthopaedic Surgery, Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London Health Sciences Centre, University Hospital, London, Ontario, Canada ) ;
  • 초록  

    Abstract Background Trunnionosis at the modular head-neck taper interface in metal-on-polyethylene total hip arthroplasty (MoP THA) has been shown to occur, and represents a potential mode of MoP THA failure. The purpose of the present investigation is to elucidate differences in fretting and corrosion at the head-neck taper interface of prostheses retrieved from bipolar hemiarthroplasty (BH) and MoP THA. Methods A retrieval analysis of BH and MoP THA prostheses featuring a single taper design from a single manufacturer and in vivo for a minimum 2 years was performed. Fifteen femoral heads of 28-mm diameter and corresponding femoral stems retrieved from BH were compared with MoP THA implants matched based on time in vivo and head length (28 mm, −3 mm to 28 mm, +8 mm). Fretting and corrosion damage scoring was completed under stereomicroscopic visualization. Results Femoral head bore tapers retrieved from BH exhibited decreased overall fretting ( P = .02), when compared to those retrieved from MoP THA. Total corrosion scores for all retrieved implants were positively correlated with implantation time ( ρ = 0.5 0.54, P Conclusion Femoral heads retrieved from BH exhibit decreased fretting damage compared to those retrieved from MoP THA. The added articulation in BH implants may decrease torque produced at the head-neck taper junction, thereby decreasing fretting. Increased fretting damage in implants from MoP THA is not associated with increased corrosion in 28-mm heads of this taper design. The longer a BH or MoP THA prosthesis is implanted, the greater the risk of damage due to corrosion.


  • 주제어

    bipolar hemiarthroplasty .   total hip arthroplasty .   trunnionosis .   fretting .   corrosion.  

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