Cementless TKA implant yielded ‘excellent’ 4-year clinical, radiographic results
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Key takeaways:
- The Attune knee system from DePuy Synthes yielded “excellent” clinical and radiographic outcomes at 4 years.
- Outcomes were similar to those of a cemented TKA implant design.
According to published results, a recently introduced cementless total knee arthroplasty implant yielded similar “excellent” clinical and radiographic outcomes at 4 years compared with a cemented implant.
Timothy G. Costales, MD, and colleagues performed a retrospective case study of data from 50 patients (mean age of 60.8 years) who underwent primary TKA with the Attune knee system (DePuy Synthes) and a matched cohort of 50 patients (mean age of 62.7 years) who underwent primary TKA with a cemented implant design.
According to the study, mean follow-up was 4.2 years in the cementless cohort and 7.6 years in the cemented cohort. Outcomes included the Knee Society Score (KSS), radiographic analysis and complications.
At final follow-up, the cementless cohort had a mean KSS of 91.1 and the cemented cohort had a mean KSS of 93.7. Researchers noted this difference was not statistically significant.
Researchers found no significant differences in range of motion between the cohorts, and they noted no complications or reoperations for any patients in either cohort. In addition, radiographic analysis revealed no evidence of component subsidence or loosening in either cohort, according to the study.
“Although these results are encouraging, additional data are needed to determine the long-term outcomes for this particular [mobile-bearing] highly porous advanced cementless knee system and whether it will have a history and success similar to those of previous cementless THAs,” the researchers wrote in the study.
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