The short-term outcome of hip revision arthroplasty with Trabecular Metal™ components and augments

Keywords Trabecular Metal™, augments, total hip arthroplasty, revision hip arthroplasty

Abstract

Background: Highly porous Trabecular Metal™ acetabular components are increasingly being used in revision hip arthroplasty as they facilitate ingrowth, provide a useful mechanism to deal with bone loss and may decrease the risk of infection. The purpose of this audit was to describe: 1) the total number of hip arthroplasty surgeries over five years, the ratio of revision to primary hip arthroplasty and indications for revision; 2) the short-term outcomes of revision hip arthroplasty with Trabecular Metal™ components and augments. 


Methods: A retrospective folder and radiograph review of all patients who had revision total hip arthroplasty (THA) at a tertiary level hospital from February 2012 to February 2017 was done.


Results: There were 979 THAs performed over the period – 863 (87%) primary THAs, and 116 (12%) hip revision cases performed in 107 patients. Of the 116 (107 patients) hip revisions, there were seven (6%) re-revisions in five patients. The indications for revision were aseptic loosening 67 (59%), septic loosening 11 (10%), liner wear 18 (16%), periprosthetic fracture five (4%), other 15 (13%). Trabecular Metal™ was used for revision in 16 hips (14 patients), which is 14% of the total 116 revisions. There were ten females and four males with an average age of 61 years. The average duration of follow-up in this group was 18.5 months (1.5–39.2). In these 16 Trabecular Metal™ hips, there were three (19%) early failures of fixation due to technical errors.


Conclusion: In our institution, 12% of the arthroplasty is revision surgery. The indications for revision are similar to published literature. Trabecular Metal™ revisions had a 19% early failure rate due to technical error.


Level of evidence: Level 4

Author Biographies

L Noconjo, University of Cape Town

B Physio; MBChB(UKZN); Registrar, Department of Orthopaedic Surgery, University of Cape Town, Groote Schuur Hospital, Cape Town, South Africa

M B Nortje, University of Cape Town

MBChB(UCT), FC Orth(SA); MMed(UCT), Consultant Orthopaedic and Arthroplasty Surgeon, Department of Orthopaedic Surgery, University of Cape Town, Vincent Pallotti and Kingsbury Hospitals, Cape Town, South Africa

Published
2020-08-26
How to Cite
NOCONJO, L; NORTJE, M B. The short-term outcome of hip revision arthroplasty with Trabecular Metal™ components and augments. South African Orthopaedic Journal, [S.l.], v. 19, n. 3, p. 162-166, aug. 2020. ISSN 2309-8309. Available at: <http://journal.saoa.org.za/index.php/saoj/article/view/274>. Date accessed: 22 sep. 2020.
Section
Arthroplasty

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