Additive manufacturing of porous titanium metaphyseal components: Early osseointegration and implant stability in revision knee arthroplasty.
Additive manufacturing
Metaphyseal cones
Metaphyseal sleeves
Osseointegration
Revision knee arthroplasty
Titanium
Journal
Journal of clinical orthopaedics and trauma
ISSN: 0976-5662
Titre abrégé: J Clin Orthop Trauma
Pays: India
ID NLM: 101559469
Informations de publication
Date de publication:
Apr 2021
Apr 2021
Historique:
received:
14
09
2020
revised:
17
10
2020
accepted:
19
10
2020
entrez:
15
3
2021
pubmed:
16
3
2021
medline:
16
3
2021
Statut:
epublish
Résumé
Metaphyseal cones and sleeves are components used in revision knee arthroplasty to ensure load transfer, encourage bone on-growth and prevent stress shielding. Additive manufacturing of titanium alloy implants is a novel technique with limited clinical outcome reports in the literature. The aim of this study was to determine radiographic evidence of osseointegration and early results of a single manufacturer porous titanium metaphyseal components in the proximal tibia. We retrospectively reviewed the prospectively collected database of two institutions. Patients who underwent revision knee arthroplasty using porous titanium components by a single manufacturer were identified. Immediate post-operative and latest follow-up radiographs were independently analysed by 2 reviewers to determine metaphyseal bone contact and level of osseointegration in relevant Knee Society Radiographic Evaluation and Scoring System zones. 22 patients (15 males; 7 females) with a mean age of 71 (49-92) years were included. The mean follow-up period was 14 months (2-44 months). Cones were used in 16 patients and sleeves in 6. Interobserver reliability assessment showed substantial agreement (weighted Kappa 0.71, (95% CI: 0.60, 0.81). There was significant correlation between the bone contact in the immediate postop radiograph and osseointegration at final follow-up (kendall's tau-b: 0.698, p < 0.001). Infection free prosthetic joint survival was 20/22 at final follow-up. Porous titanium metaphyseal components produced with additive manufacturing provided excellent osseointegration and no early clinical failures. Partial or complete contact of the cone with native bone in the immediate postoperative radiograph resulted in osseointegration in all cases.
Identifiants
pubmed: 33717918
doi: 10.1016/j.jcot.2020.10.042
pii: S0976-5662(20)30511-7
pmc: PMC7920135
doi:
Types de publication
Journal Article
Langues
eng
Pagination
60-64Informations de copyright
© 2020 Delhi Orthopedic Association. All rights reserved.
Déclaration de conflit d'intérêts
One of the authors declares a paid consultancy with Implantcast GmbH, not related to this study.
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