Arrêt de service programmé du vendredi 10 juin 16h jusqu’au lundi 13 juin 9h. Pour en savoir plus
Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Total knee arthroplasty with the Medial-Pivot knee system: Clinical and radiological outcomes at 9.5 years' mean follow-up

Abstract : Introduction: The ``ball-in-socket'' design of the Medial-Pivot knee system (MicroPort Orthopedics, Arlington, Tennessee, USA) aims to reproduce normal knee kinematics by medializing its rotational axis. The goal of this study was to measure knee range of motion (ROM) with this implant after a mean follow-up of 10 years and to report the survivorship and long-term clinical and radiological outcomes. We hypothesized the prosthetic knee would have at least 120 degrees flexion at 10 years. Material and methods: This was retrospective, single-centre study of 74 Medial-Pivot knees implanted in 71 patients (average age of 69 years) between May 2005 and November 2007. All patients who received a Medial-Pivot knee were included consecutively. The mean follow-up was 10 years. Clinical and radiological assessments were performed using the Knee Society Score (KSS) and Ewald's score. Kaplan-Meir survival analysis was used to calculate survivorship. Results: Seven percent of cases were lost to follow-up. The knee ROM was 110 degrees at 10 years. The survivorship was 93% for all revision causes and 95.9% when revisions due to trauma or infection were excluded. The mean KSS score was 195. Stable radiolucent lines were found in 14% of cases. No aseptic loosening was observed. Conclusion: Our hypothesis was not confirmed. Knee flexion at the final follow-up was comparable to other semi-constrained implant designs but was not as large as expected. The survival of the Medial-Pivot knee at 10 years is good. Its radiological and clinical outcomes are satisfactory. (c) 2017 Published by Elsevier Masson SAS.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal-u-picardie.archives-ouvertes.fr/hal-03596695
Contributeur : Louise Dessaivre Connectez-vous pour contacter le contributeur
Soumis le : jeudi 3 mars 2022 - 18:39:27
Dernière modification le : vendredi 4 mars 2022 - 03:00:20

Lien texte intégral

Identifiants

Collections

Citation

Massinissa Dehl, Yassine Bulaid, M. Chelli, Ramy Belhaouane, Antoine Gabrion, et al.. Total knee arthroplasty with the Medial-Pivot knee system: Clinical and radiological outcomes at 9.5 years' mean follow-up. ORTHOPAEDICS & TRAUMATOLOGY-SURGERY & RESEARCH, 2018, 104 (2), pp.185-191. ⟨10.1016/j.otsr.2017.10.016⟩. ⟨hal-03596695⟩

Partager

Métriques

Consultations de la notice

7