Clinical Orthopaedics and Related Research®

, Volume 470, Issue 2, pp 395–401

Tantalum Augments for Paprosky IIIA Defects Remain Stable at Midterm Followup

  • Daniel J. Del Gaizo
  • Vamsi Kancherla
  • Scott M. Sporer
  • Wayne G. Paprosky
Symposium: Papers Presented at the Annual Meetings of The Hip Society

DOI: 10.1007/s11999-011-2170-x

Cite this article as:
Del Gaizo, D.J., Kancherla, V., Sporer, S.M. et al. Clin Orthop Relat Res (2012) 470: 395. doi:10.1007/s11999-011-2170-x

Abstract

Background

Initial reports with short-term followup of porous tantalum acetabular components and augments for Paprosky IIIA acetabular defects demonstrate high hip scores, low rates of aseptic loosening, and low rates of complications. However, longer-term followup with a larger cohort is needed to determine the durability of these reconstructions.

Questions/purposes

We therefore determined the functional scores, rates of aseptic loosening, and complications in patients with Paprosky IIIA acetabular defects treated with porous tantalum acetabular components and augments.

Methods

We retrospectively reviewed 37 acetabular revisions in 36 patients (one patient with bilateral revisions) treated with a porous tantalum acetabular component and augment. All patients had defects classified as Type IIIa using the system of Paprosky et al. Harris hip scores were obtained and radiographic examination was performed before surgery and through most recent followup. The minimum followup was 26 months (mean, 60 months; range, 26–106 months).

Results

One patient developed aseptic loosening of the acetabular reconstruction requiring revision; seven other patients required further surgery for periprosthetic femoral fracture (two), acute infection (three), and recurrent dislocation (two). Thirty-five of 37 hips had no or occasional pain at final followup. Mean Harris hip scores improved from 33.0 preoperatively (range, 12.6–58.7) to 81.5 postoperatively (range, 27.0–99.8).

Conclusions

Although the complication rate requiring further surgery was considerable, most patients with these reconstructions had pain relief and reasonable function with low rates of loosening at midterm followup.

Level of Evidence

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

Copyright information

© The Association of Bone and Joint Surgeons® 2011

Authors and Affiliations

  • Daniel J. Del Gaizo
    • 1
    • 2
  • Vamsi Kancherla
    • 1
    • 2
  • Scott M. Sporer
    • 1
    • 2
  • Wayne G. Paprosky
    • 1
    • 2
  1. 1.Department of Orthopedic SurgeryRush University Medical CenterChicagoUSA
  2. 2.Central Dupage HospitalWinfieldUSA

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