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Early results back efficacy of UKA using domed tibia implant for patients with knee OA
Researchers reported statistically significant improvements in Oxford Knee Scores and few reoperations during a minimum 2-year follow-up of patients with knee osteoarthritis who underwent lateral unicompartmental knee arthroplasty using a domed tibia, mobile bearing lateral prosthesis.
“This study from an independent centre reporting on the short-term results of the domed tibia, mobile bearing lateral UKA supports the safety and efficacy of the procedure as a treatment option in the patients with lateral compartment osteoarthritis of the knee,” the researchers wrote in their study abstract.
The researchers assessed 64 knees in 58 patients who underwent the procedure from 2005 to 2009. The group had a mean age of 71 years and mean preoperative Oxford Knee Score (OKS) of 24. Most of the patients were women. The investigators used reoperation and revision rate, especially for bearing dislocation, as their primary outcome measure and OKS as their secondary outcome measure.
At minimum 2-year follow-up, four knees were revised. Although the investigators found two cases that needed revision of the implant, they reported no cases of bearing dislocation. The mean postoperative OKS increased to 42, according to the abstract.
Disclosure: The authors have no relevant financial disclosures.