Clinical Orthopaedics and Related Research®

, Volume 470, Issue 2, pp 428–434

Pelvic Discontinuity Treated With Custom Triflange Component: A Reliable Option

  • Michael J. Taunton
  • Thomas K. Fehring
  • Paul Edwards
  • Thomas Bernasek
  • Ginger E. Holt
  • Michael J. Christie
Symposium: Papers Presented at the Annual Meetings of The Hip Society

DOI: 10.1007/s11999-011-2126-1

Cite this article as:
Taunton, M.J., Fehring, T.K., Edwards, P. et al. Clin Orthop Relat Res (2012) 470: 428. doi:10.1007/s11999-011-2126-1

Abstract

Background

Pelvic discontinuity is an increasingly common complication of THA. Treatments of this complex situation are varied, including cup-cage constructs, acetabular allografts with plating, pelvic distraction technique, and custom triflange acetabular components. It is unclear whether any of these offer substantial advantages.

Questions/purposes

We therefore determined (1) revision and overall survival rates, (2) discontinuity healing rate, and (3) Harris hip score (HHS) after treatment of pelvic discontinuity with a custom triflange acetabular component and (4) the cost of this reconstructive operation compared to other constructs.

Methods

We retrospectively reviewed 57 patients with pelvic discontinuity treated with revision THA using a custom triflange acetabular component. We reviewed operative reports, radiographs, and clinical data for clinical and radiographic results. We also performed a cost comparison with utilization of other techniques. Minimum followup was 24 months (average, 65 months; range, 24–215 months).

Results

Fifty-six of 57 (98%) were free of revision for aseptic loosening at latest followup. Fifty-four (95%) were free of revision of the triflange component for any reason. Thirty-seven (65%) were free of revision for any reason. Twenty-eight (49%) were free of revision for any reason and free of any component migration and had a healed discontinuity. Forty-six (81%) had a stable triflange component with a healed pelvic discontinuity. Average HHS was 74.8. The costs of the custom triflange implants and a Trabecular Metal® cup-cage construct were equivalent: $12,500 and $11,250, respectively.

Conclusions

In this group of patients with osteolytic pelvic discontinuity, triflange implants provided predictable mid-term fixation at a cost equivalent to other treatment methods.

Level of Evidence

Level IV, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.

Copyright information

© The Association of Bone and Joint Surgeons® 2011

Authors and Affiliations

  • Michael J. Taunton
    • 1
    • 2
  • Thomas K. Fehring
    • 2
  • Paul Edwards
    • 5
  • Thomas Bernasek
    • 5
  • Ginger E. Holt
    • 4
  • Michael J. Christie
    • 3
  1. 1.Department of Orthopedic SurgeryMayo ClinicRochesterUSA
  2. 2.OrthoCarolinaCharlotteUSA
  3. 3.Southern Joint Replacement InstituteNashvilleUSA
  4. 4.Department of Orthopedic SurgeryVanderbilt UniversityNashvilleUSA
  5. 5.Florida Orthopedic InstituteTampaUSA

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