Mobile Anatomical Total Ankle Arthroplasty-Improvement of Talus Recentralization.
ankle
ankle osteoarthritis
total ankle arthroplasty
total ankle replacement
vantage
Journal
Journal of clinical medicine
ISSN: 2077-0383
Titre abrégé: J Clin Med
Pays: Switzerland
ID NLM: 101606588
Informations de publication
Date de publication:
02 Feb 2021
02 Feb 2021
Historique:
received:
09
01
2021
revised:
28
01
2021
accepted:
29
01
2021
entrez:
5
2
2021
pubmed:
6
2
2021
medline:
6
2
2021
Statut:
epublish
Résumé
Total ankle arthroplasty (TAA) is becoming a more frequent treatment option for end-stage ankle osteoarthritis (OA) as outcomes measures are improving. However, there is concern that malalignment of TAA can result in premature failure of the implant. One of the malalignment issues is the talar sagittal malposition. However, a consensus on the significance of the sagittal translation of the talus in TAA is yet to be established. The aim of this study was, therefore, to clarify whether talus OA subluxation is normalized after the implantation of a mobile TAA. Forty-nine consecutive patients with symptomatic end-stage ankle OA underwent 50 cementless three-component mobile-bearing VANTAGE TAA with 21 right ankles (42%) and 29 left ankles (58%). Clinical and radiographic outcomes were assessed: Clinical variables: American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score (0-100), visual analogue scale (VAS, 0-10), and ankle range of motion (ROM). Radiological variables: medial distal tibial articular angle (mDTAA), anterior distal tibial articular angle (aDTAA) and lateral talar station (LTS). The clinical results showed the mean improvement in AOFAS hindfoot score from 42.12 ± SE 2.42 (Range: 9-72) preoperatively, to 96.02 ± SE 0.82 (Range: 78-100) at a mean follow-up of 12 months, with a highly statistically significant difference ( In the present study, the lateral talar station of anteriorly subluxated ankles showed a significant improvement, i.e., physiological centralization of the talus, in the postoperative period when a mobile-bearing TAA was performed. The anterior/posterior congruency between the talar component and the mobile polyethylene insert of the mobile-bearing VANTAGE TAA allows the sagittal translation of the talus relative to the flat tibial component, reducing the prosthesis strain and failure.
Identifiants
pubmed: 33540943
pii: jcm10030554
doi: 10.3390/jcm10030554
pmc: PMC7867334
pii:
doi:
Types de publication
Journal Article
Langues
eng
Déclaration de conflit d'intérêts
The senior author is co-inventor of the implanted VANTAGE Mobile Total Ankle Arthroplasty.
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