Mid-term outcomes using a 'kinematic retaining' total knee replacement - A multicentre prospective study at five years follow-up.
J Orthop
; 57: 147-152, 2024 Nov.
Article
em En
| MEDLINE
| ID: mdl-39040566
ABSTRACT
Background:
Although total knee replacement (TKR) surgery has succeeded in improving pain and deformity, a proportion of patients remain incompletely satisfied with their outcome. This prospective study aims to assess the survivorship, clinical, and radiological outcomes using a novel 'kinematic retaining' (KR) implant.Methods:
156 patients underwent TKR surgery for primary osteoarthritis using the Physica KR implant at three European Centres. Patients were followed up for five years using both radiographic and clinical evaluations.Results:
Within 6 months post-operatively, 79.4% and 85.9% had good-excellent clinical and functional KSS values, this was maintained to 76.9% and 79.5% at five years. Mean Knee Society Score (KSS) improvement at 5 years was 32.8 (from 23 to 40) and 37.4 (from 30 to 50) (p < 0.01). All Knee Injury and Osteoarthritis Outcome Score (KOOS) sub-scores showed statistically significant improvement from before surgery at a mean of 34.7 (SD ± 16.1) to a mean of 86.6 (SD ± 16.1) at five years. The mean Oxford Knee Score (OKS) was 43.7 (±5.6), with over 80% of the patients having a good-excellent outcome at five years. OKS improved significantly by six weeks after surgery (p < 0.01) and remained constant throughout the 5-year follow-up. Visual Analogue Score (VAS) Satisfaction scores improved significantly after the post-operative time point of six weeks. From 1 year to 5 years, the average VAS was over 85 mm. The Forgotten Joint Score (FJS) increased from 64.5 at 1 year to 79.2 at 5 years after surgery (p < 0.01). No progressive adverse radiographic features were noted. Two patients were revised during the study period one for infection and the other for aseptic loosening.Conclusions:
This novel 'kinematic retaining' knee prosthesis has shown exceptional clinical and patient-reported improvements, with a remarkable 99.4% survivorship (95.5-99.9) at five years.
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MEDLINE
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Ano de publicação:
2024
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Article