Computer navigation-assisted TKR significantly improves alignment and reduces perioperative complications in obese patients: study

Obesity has also been recognized as the most important modifiable risk factor for osteoarthritis. Total knee replacement (TKR) in obese patients presents additional challenges with increased risk of component malpositioning and component loosening. Navigation in TKR results in accurate alignment, titrated soft tissue balancing, reduced blood loss, early rehabilitation, and reduced chances of embolism by not entering the intramedullary space. Whether it actually improves outcomes and reduces complications in obese was the research question of our study.
Mrinal Sharma et al conducted a prospective randomized comparative observational study. Obese patients between ages 50 and 75 years undergoing primary TKR for osteoarthritis were included in the study after an internal review board approval and after prior informed consent. A hundred knees in obese patients [Body mass index (BMI) > 30 kg/m2)] with varus deformation undergoing TKR were randomized into a navigated group (NG, n = 50) and a non-navigated group (NNG, n = 50).
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