Minimally invasive lateral unicompartmental knee replacement: Early results from an independent center using the Oxford fixed lateral prosthesis
Purpose - The aim of the present study was to assess clinical outcome as well as short-term survivorship of fixed-bearing lateral unicompartmental knee replacement (UKR) from a non-designer centre using the Oxford Fixed Lateral prosthesis. - Methods - This single-centre retrospective cohort study re...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
[2020]
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| In: |
The knee
Year: 2020, Volume: 27, Issue: 1, Pages: 235-241 |
| ISSN: | 1873-5800 |
| DOI: | 10.1016/j.knee.2019.09.018 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.knee.2019.09.018 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0968016019302273 
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| Author Notes: | Tilman Walker, Mustafa Hariri, Johannes Eckert, Benjamin Panzram, Tobias Reiner, Christian Merle, Tobias Gotterbarm, Babak Moradi |
| Summary: | Purpose - The aim of the present study was to assess clinical outcome as well as short-term survivorship of fixed-bearing lateral unicompartmental knee replacement (UKR) from a non-designer centre using the Oxford Fixed Lateral prosthesis. - Methods - This single-centre retrospective cohort study reports the short-term results of 51 consecutive patients (52 knees) after fixed-bearing lateral UKR with a minimum follow-up of one year. Survivorship analysis was performed with different endpoints and clinical outcome was measured using the Oxford Knee Score (OKS), objective American Knee Society Score (AKSS-O), range-of-motion (ROM), visual analog scale for pain (VAS), Tegner activity score and UCLA score. - Results - There was no revision surgery, defined as exchange of at least one of the components resulting in a survival rate of 100% at two years. Three patients required further surgical treatment resulting in a survival rate of 94.2% (95% confidence interval (CI): 83.2-98.1%) with the endpoint ‘any reoperation’. Outcome scores, VAS and ROM showed a statistically significant improvement at final follow-up (P<.001). The OKS improved from 26.4±6.9 (12-41) preoperatively to 39.7±8.4 (15-48), the AKSS-O from 54.3±15.3 (18-90) to 82.2±15.6 (40-100), the American Knee Society Functional Score from 56.4±21.3 (10-100) to 83.1±20.2 (five to 100) and the ROM from 123.5±13.5 (90-140) to 134±10.3 (95-150). - Conclusion - Early results of fixed-bearing lateral UKR using the Oxford-Fixed-Lateral prosthesis were encouraging with a significant improvement in pain and knee function as well as an excellent survivorship of 100% at a mean follow-up of two years. Further follow-up is necessary to evaluate the long-term effectiveness of this device and the surgical technique. - Level of Evidence - Level IV, retrospective cohort study. |
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| Item Description: | Gesehen am 09.04.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1873-5800 |
| DOI: | 10.1016/j.knee.2019.09.018 |