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Published in: International Orthopaedics 7/2021

01-07-2021 | Hip-TEP | Original Paper

Minimum ten-year results in revision total hip arthroplasty using titanium fully porous long stem

Authors: Masahiro Hasegawa, Shine Tone, Yohei Naito, Hiroki Wakabayashi, Akihiro Sudo

Published in: International Orthopaedics | Issue 7/2021

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Abstract

Purpose

The fully porous long stem could be used for diaphyseal locking and achieve bypass fixation in revision total hip arthroplasty (THA). This study evaluated long-term results for fully porous long stems made of titanium alloy in revision THA.

Methods

Between 2003 and 2010, 45 consecutive femoral revisions were performed using fully porous long stems. Thirty-eight hips had complete clinical and radiographic data for a mean of 13.8 years (range, 10–16.7 years). Femoral bone loss was Paprosky type II in 14 hips, type IIIA in 18 hips, and type IIIB in six hips. Clinical results were analyzed using the Merle d’Aubigné and Postel scoring system. Femoral stress shielding was graded. Radiological loosening of the femoral component was evaluated. Kaplan-Meier survival analysis was performed with revision for any reason as the end-point.

Results

Mean Merle d’Aubigné and Postel score improved significantly from 10.7 before revision to 14.5 at latest follow-up (p < 0.001). Third-degree stress shielding was found in seven hips, and fourth degree in 11 hips. Radiological femoral loosening occurred in one hip, which was revised. Another hip was revised for stem fracture. Kaplan-Meier cumulative survival rate was 94.7% at both ten and 15 years.

Conclusion

Although stress shielding is a concern with fully porous stems, this stem was useful in revision THA and provided satisfactory long-term results in hips with Paprosky types II, IIIA, and IIIB.
Literature
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Metadata
Title
Minimum ten-year results in revision total hip arthroplasty using titanium fully porous long stem
Authors
Masahiro Hasegawa
Shine Tone
Yohei Naito
Hiroki Wakabayashi
Akihiro Sudo
Publication date
01-07-2021
Publisher
Springer Berlin Heidelberg
Keywords
Hip-TEP
Hip-TEP
Published in
International Orthopaedics / Issue 7/2021
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-021-05030-4

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