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High Midterm Survival Rate of Uncemented Total Knee Arthroplasty After High Tibial Osteotomy: A Case-Control Study
Cécile Batailler1, Camdon Fary2, Stéphane Denjean3
1Hôpital de la Croix-Rousse; Université Lyon 1, Lyon, France.
Background:
Total knee arthroplasty (TKA) following high tibial osteotomy (HTO) is technically more demanding than TKA in a native knee. Studies have reported increased intraoperative and postoperative complication of TKA with previous HTO. The aim of this study is to compare the survival and complication rates and functional outcomes of uncemented TKA with previous HTO to primary TKA at our institution over a decade.
Methods:
This case-control study included 41 uncemented TKA after HTO between 2002 and 2012. For each case, 2 control patients were matched based on age and gender without previous HTO. The 2 groups were comparable for body mass index, as well as preoperative functional scores.
Results:
The mean follow-up was 7.8 ± 2.4 (range, 5-13.6) years. At last follow-up, there was no significant difference in functional outcomes or radiological imaging, particularly the rate of radiological loosening. There was no significant difference in complications (9; 22%) in the group of TKA after HTO vs the control group (14; 17%). One revision was performed in the group of TKA after HTO for septic loosening, and no revisions in the control group. The survival rate at a mean follow-up of 8 years was 97.6% in the group TKA after HTO vs 100% in the control group.
Conclusion:
Uncemented TKAs following HTO have no significant difference in functional and radiological outcomes and survivorship compared to uncemented primary TKA at midterm follow-up.
