Abstract
Purpose
High tibial osteotomy (HTO) and unicompartmental knee arthroplasty (UKA) are commonly performed procedures for the treatment of compartmental knee osteoarthritis; however, the optimal procedure remains controversial. We conducted this systematic review and meta-analysis to compare the functional outcomes and assess complications and revision rates between the two techniques.
Methods
We searched electronic databases for relevant studies comparing HTO versus UKA for unicompartmental knee osteoarthritis. Continuous data as visual analogue scale (VAS), range of motion, and free walking speed were pooled as mean differences (MDs). Dichotomous data as functional knee outcomes, complications, and revision were pooled as odds ratios (ORs), with 95% confidence interval (CI), using R software for windows.
Results
Twenty-five studies involving 8185 patients were included. Meta-analysis showed that HTO was associated with higher risk of complications (OR = 2.47, 95% CI [1.52, 4.04]), poorer functional results (excellent/good) (OR = 0.32, 95% CI [0.21, 0.49]), and greater range of motion (MD = 7.05, 95% CI [2.41, 11.68]) compared to UKA. No significant differences were found between the compared groups in terms of VAS (MD = 0.14, 95% CI [− 0.08, 0.36]), revision rates (OR = 1.30, 95% CI [0.65, 2.60]), and free walking speed (MD = − 0.05, 95% CI [− 0.11, 0.00]).
Conclusion
This study showed that UKA achieved fewer complications, better functional outcomes, and less range of motion compared to HTO. No significant differences were detected between HTO and UKA in terms of VAS and revision rate. Treatment options should be personalized to each patient considering factors such as their age, activities of daily living, their body mass index, and severity of osteoarthritis.
Level of evidence
II.
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Availability of Data and Material
The raw extracted data are available upon request.
Code Availability
Not applicable.
Abbreviations
- BMI:
-
Body mass index
- CI:
-
Confidence interval
- CW:
-
Closing wedge
- CWHTO:
-
Close-wedge high tibial osteotomy
- HTO:
-
High tibial osteotomy
- MD:
-
Mean difference
- NOS:
-
Newcastle Ottawa Scale
- OR:
-
Odds ratio
- OW:
-
Opening wedge
- OWHTO:
-
Open-wedge high tibial osteotomy
- PCA:
-
Porous coated anatomic implant
- PRISMA:
-
Preferred Reporting Items for Systematic Reviews and Meta-Analysis
- PROSPERO:
-
International Prospective Register of Systematic Reviews
- RCT:
-
Randomized clinical trial
- SD:
-
Standard deviation
- UKA:
-
Unicompartmental knee arthroplasty
- VAS:
-
Visual analogue scale
- WOMAC:
-
Western Ontario and McMaster Universities Arthritis Index
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IS: methodology, investigation, project administration, formal data analysis, writing—original draft, writing—review and editing. GB: methodology, investigation, project administration, formal data analysis, writing—original draft, writing—review and editing. NS: conceptualization, methodology, investigation, writing—review and editing. DG: methodology, investigation, writing—review and editing. AR: data reviewing, methodology, investigation, writing—review and editing. KL: methodology, investigation, writing—review and editing. AR: methodology, writing—review and editing. WB: conceptualization, methodology, supervision, writing—review and editing.
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Ishith Seth declares that he has no conflict of interest. Nimish Seth declares that he has no conflict of interest. Gabriella Bulloch declares that she has no conflict of interest. Damien Gibson declares that he has no conflict of interest. Anish Rastogi declares that he has no conflict of interest. Kirk Lower declares that he has no conflict of interest. Aaron Rodwell declares that he has no conflict of interest. Warwick Bruce declares that he has no conflict of interest.
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Seth, I., Bulloch, G., Seth, N. et al. High Tibial Osteotomy Versus Unicompartmental Knee Arthroplasty for Unicompartmental Knee Osteoarthritis: A Systematic Review and Meta-Analysis. JOIO 56, 973–982 (2022). https://doi.org/10.1007/s43465-022-00620-9
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DOI: https://doi.org/10.1007/s43465-022-00620-9