Unicompartmental knee Arthroplasty in Iranian population,a case series report

BackhroundsIn comparison to TKA, UKA is a less invasive procedure, providing faster recovery and lessblood loss, with a lower risk of complication. Unicompartmental knee arthroplasty is analternative to total knee arthroplasty in isolated end - stage medial osteoarthritis. UKA iscurrently considered as a viable option in most patients regardless of age, activity level, andweight.MethodsBetween 2013 and 82 ,2018 consecutive patients had medial unilateral uniompartmentalknee osteoarthrosis in contrast, 7 patients had bilateral unicompartmental kneeosteoarthrosis.in all cases fix bearing UKA prosthesis with sub vastus approach wasused. Antromedial osteoarhtritis (70 cases) and osteonecrosis (19 cases) were the maincauses. All patients have been evaluated clinically and radiographically before surgery, andpostoperatively in 12 ,6 ,3 2 ,1 months intervals and also 5-2 years.ResultsThe mean Oxford knee score preoperatively was 20 which knee score postoperatively was%85 .44 of patients showed excellent outcomes also %10 of patients showed defectiveoutcomes. One patient had periprosthetic fracture in tibial part wich was managed withconservative treatment. There were no revision, infection, component loosening, instabilityand component wear. Postoperative standing X-rays at 8 week and 1 year showed a wellfixedfemoral and tibial component. There was potential improvement in mean knee rangeof motion as well as across various standardized knee score. ConclusionsThis study showed UKA provide an optimal solution and higher function in the treatment ofmedial end_ stage osteoarthritis. The result of this consecutive cases series demonstratedthat excellent results can be achievable. Interst in UKA continues to expand as an earlyintervention method and is showed as a more conservative procedure than TKA with betterkinematic and functional outcomes.