Back to Search Start Over

Preliminary Results of Total Hip Arthroplasty in Subjects at Risk for Dislocation Using a Novel Modular Cementless Dual-Mobility Cup. A Single-Center Prospective Study

Authors :
Giuseppe Solarino
Filippo Simone
Antonello Panella
Arianna Carlet
Flavia Riefoli
Biagio Moretti
Source :
Prosthesis, Vol 3, Iss 1, Pp 53-60 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

Nowadays total hip arthroplasty (THA) is widely considered the operation of the century in orthopedic and traumatological fields. Despite this fact, instability and dislocation after THA are a common reason for revision surgery. The purpose of this prospective study is to evaluate the preliminary clinical and radiological results of a novel dual mobility cup. We evaluated 32 consecutive cases of patients who underwent THA using a novel dual mobility cup—with holes in the cup, a modular metallic inlay and a crosslinked polyethylene. All of them were considered at risk of instability of the implant due to primary or concomitant diagnosis. The preoperative Harris hip score was 54.7 on average. At a minimum 2 years follow-up, the mean HHS raised up to a mean value of 88.4; this improvement was statistically significant (p < 0.0001). None of the patients enrolled in this study sustained a postoperative dislocation at a mean follow-up of 39.6 months. Furthermore, no patients sustained modular liner dissociation or an intraprosthetic dislocation. As such, survivorship free from dislocation was 100% at both 2 and 5 years. This study demonstrates that the modular dual mobility (DM) socket provides dual articulation, larger jump distance, and greater range of motion before impingement, which significantly reduce the rate of dislocation.

Details

Language :
English
ISSN :
26731592
Volume :
3
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Prosthesis
Publication Type :
Academic Journal
Accession number :
edsdoj.fd5bc78ca0dd49d98a87598873a0882c
Document Type :
article
Full Text :
https://doi.org/10.3390/prosthesis3010006