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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

09-10-2023 | Osteoarthrosis | KNEE

Image-based robotic-arm assisted unicompartmental knee arthroplasty provides high survival and good-to-excellent clinical outcomes at minimum 10 years follow-up

Authors: Francesco Zambianchi, Stefano Seracchioli, Giorgio Franceschi, Riccardo Cuoghi Costantini, Alessandro Malatesta, Giovanni Barbo, Fabio Catani

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 12/2023

Abstract

Purpose

The purpose of the present study was to determine the incidence of revision and report on clinical outcomes at a minimum of 10 years follow-up in patients who had received a medial unicompartmental knee arthroplasty (UKA) with an three-dimensional image-based robotic system.

Methods

A total of 239 patients (247 knees), who underwent medial robotic-arm assisted (RA)-UKA at a single center between April 2011 and June 2013, were assessed. The mean age at surgery was 67.0 years (SD 8.4). Post-operatively, patients were administered the Forgotten Joint Score-12 (FJS-12) and asked about their satisfaction (from 1 to 5). Post-operative complications were recorded. Failure mechanisms, revisions and reoperations were collected. Kaplan–Meier survival curves were calculated, considering revision as the event of interest.

Results

A total of 188 patients (196 knees) were assessed at a mean follow-up of 11.1 years (SD 0.5, range 10.0–11.9), resulting in a 79.4% follow-up rate. Seven RA-UKA underwent revision, resulting in a survivorship rate of 96.4% (CI 94.6%–99.2%). Causes of revision included aseptic loosening (2 cases), infection (1 case), post-traumatic (1 case), and unexplained pain (3 cases). The mean FJS-12 and satisfaction were 82.2 (SD 23.9) and 4.4 (SD 0.9), respectively. Majority of cases (174/196, 88.8%) attained the Patient Acceptable Symptoms State (PASS, FJS-12 > 40.63). Male subjects had a higher probability of attaining a “forgotten joint” (p < 0.001) and high satisfaction (equal to 5, p < 0.05), when compared to females.

Conclusions

Three-dimensional image-based RA-UKA demonstrated high implant survivorship and good-to-excellent clinical outcomes at minimum 10 years follow-up. Pain of unknown origin represented the most common reason for RA-UKA revision.

Level of evidence

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Title: Image-based robotic-arm assisted unicompartmental knee arthroplasty provides high survival and good-to-excellent clinical outcomes at minimum 10 years follow-up
Authors: Francesco Zambianchi
Stefano Seracchioli
Giorgio Franceschi
Riccardo Cuoghi Costantini
Alessandro Malatesta
Giovanni Barbo
Fabio Catani
Publication date: 09-10-2023
Publisher: Springer Berlin Heidelberg
Keywords: Osteoarthrosis
Osteoarthrosis
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 12/2023
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-023-07599-2

2024 ASCO Annual Meeting

Springer Medicine

Image-based robotic-arm assisted unicompartmental knee arthroplasty provides high survival and good-to-excellent clinical outcomes at minimum 10 years follow-up

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

2024 ASCO Annual Meeting

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

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