Minimum ten year results of total hip arthroplasty with the acetabular reinforcement ring in avascular osteonecrosis

Koch, PP; Tannast, M; Fujita, H; Siebenrock, KA; Ganz, R (2008). Minimum ten year results of total hip arthroplasty with the acetabular reinforcement ring in avascular osteonecrosis. International orthopaedics, 32(2), pp. 173-9. Heidelberg: Springer-Verlag 10.1007/s00264-006-0303-8

[img]
Preview
Text
264_2006_Article_303.pdf - Published Version
Available under License Publisher holds Copyright.

Download (203kB) | Preview

Total hip arthroplasty (THA) still carries a higher failure rate in patients with avascular necrosis of the femoral head (AVN) than in a similar patient population with THA for other reasons. This is particularly true for the acetabular component. One of the major factors accounting for this is the compromised acetabular bone quality with structural defects subsequent to collapsing of the femoral head in high-grade AVN. In this study we implanted an acetabular reinforcement ring with hook (ARRH), which had been used successfully for other indications with acetabular bone stock deficiency, in 32 consecutive THA's in 29 patients with AVN. Five patients died during the observation period of causes unrelated to the surgery, one patient was lost to follow-up and one patient could not be followed up due to chronic illness, leaving 25 hips (23 patients) with a minimum follow-up of ten years (mean: 11.8; range: 10-15). The mean Merle d'Aubigne score increased significantly from 7.7 preoperatively to 16.6 postoperatively (p < 0.001). One revision was performed for aseptic stem loosening. Of the unrevised hips, one acetabular component was classified as definitively loose. The cumulative 12-year survivorship for THA with ARRH in AVN was 95.2% (confidence interval: 86.1-100%) for both components, 100% for the cup and 95.2% for the stem (86.1-100%).

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Orthopaedic Surgery

UniBE Contributor:

Tannast, Moritz; Siebenrock, Klaus-Arno and Ganz, Reinhold

ISSN:

0341-2695

ISBN:

18350291

Publisher:

Springer-Verlag

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:57

Last Modified:

23 Oct 2019 08:27

Publisher DOI:

10.1007/s00264-006-0303-8

PubMed ID:

18350291

Web of Science ID:

000254201100005

BORIS DOI:

10.7892/boris.24450

URI:

https://boris.unibe.ch/id/eprint/24450 (FactScience: 50734)

Actions (login required)

Edit item Edit item
Provide Feedback