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Clinical and radiological outcomes of trabecular metal systems and antiprotrusion cages in acetabular revision surgery with severe defects: a comparative study
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Clinical and radiological outcomes of trabecular metal systems and antiprotrusion cages in acetabular revision surgery with severe defects: a comparative study
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Clinical and radiological outcomes of trabecular metal systems and antiprotrusion cages in acetabular revision surgery with severe defects: a comparative study
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Journal Article
Clinical and radiological outcomes of trabecular metal systems and antiprotrusion cages in acetabular revision surgery with severe defects: a comparative study
2018
Overview
Introduction
Acetabular revision surgery poses a challenge due to the increased frequency of severe defects and poor quality of the remaining bone. We compare the clinical and radiological outcomes, complications, and survival of two systems commonly used in complex acetabular revisions (AAOS types II, III, and IV): trabecular metal system (TM) and Burch-Schneider antiprotrusion cages (BS).
Methods
Eighty-four patients underwent acetabular revision surgery with TM or BS in our centre between 2008 and 2014. Comparison was made of demographic and clinical characteristics, satisfaction, radiographic parameters, complications, and survival of the implants. A BS was implanted in 30.9% of the patients, while 69.1% received a TM implant. The mean follow-up was 4.77 years.
Results
The BS group required a significantly greater number of constrained implants (
p
= 0.001) and more walking aids (
p
= 0.04). The mean satisfaction (
p
= 0.02) and HHS scores at the end of the follow-up were higher in the TM group (
p
= 0.003). No differences were observed in the incidence of complications, though the only two cases of implant rupture corresponded to the BS group. The overall survival rate was 88.1% after 7.5 years.
Conclusion
TM implants afforded better clinical outcomes and greater patient satisfaction than antiprotrusion cages in the treatment of severe acetabular defects.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
/ Aged
/ Arthroplasty, Replacement, Hip - adverse effects
/ Arthroplasty, Replacement, Hip - instrumentation
/ Defects
/ Female
/ Hip Prosthesis - adverse effects
/ Humans
/ Male
/ Medicine
/ Patient Satisfaction - statistics & numerical data
/ Postoperative Complications - epidemiology
/ Prosthesis Design - adverse effects
/ Reoperation - adverse effects
/ Reoperation - instrumentation
/ Surgeons
/ Surgery
/ X-rays
