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International Orthopaedics

, Volume 43, Issue 1, pp 63–70 | Cite as

A new classification for proximal femur bone defects in conservative hip arthroplasty revisions

  • Filippo CasellaEmail author
  • Fabio Favetti
  • Gabriele Panegrossi
  • Matteo Papalia
  • Francesco Falez
Original Paper
  • 57 Downloads

Abstract

Introduction

In last three decades, total hip replacement in young patients became an habitual procedure. Principles of bone preservation are pushing many surgeons to implant conservative femoral components in patient younger than 65 years. Despite an overall good survivorship and clinical outcomes of conservative implants, failed cases are reported and the need to revise a conservative femoral component became an occasional procedure (with high prevalence of failed resurfacing implants).

Methods

During conservative femoral component revisions, we analyzed proximal bone stock preservation, considering the type of original component removed, aetiology of failure, timing of revision, and femoral explantation technique.

Results

We identified four patterns of proximal femoral changes (types I–IV). We suggest, for each of them, a revision strategy directed toward a “conservative revision procedure” using conservative or primary component. Out of our 21 cases, none underwent further revision due to mechanical failure (follow-up ranging from 6 to 152 months, mean 54 months). We had two cases of re-operation: one for early septic loosening and one for prosthetic modular neck fracture.

Conclusions

If literature offers well-established guidelines to femoral revision of conventional stems, there is, on the other hand, a lack of data about revision strategies in presence of failed conservative implants. Although the mean follow-up of our procedures is still too short (4.5 years) to give final conclusions, we would leave a message: a conservative hip arthroplasty is not a “one time” opportunity for young and active people. A “conservative revision” is a valid option for at least a part of them, when an early failure of primary procedure occurred.

Keywords

Hip Revision Conservative Classification 

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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  1. 1.Orthopaedic and Traumatologic DeptSanto Spirito General HospitalRomeItaly
  2. 2.Orthopaedic and Traumatologic DeptNuova ItorRomeItaly

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