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Cruciate-retaining TKAs may decrease function in knees
Cruciate-retaining total knee arthroplasties created quadriceps functional deviancies for patients, according to results of this study.
Researchers studied relative quadriceps effort in seven patients undergoing unilateral cruciate-retaining total knee arthroplasties (CR-TKAs) at 2 years postoperatively using the Intelligent Device for Energy Expenditure and Physical Activity (IDEEA, MiniSun, Fresno, Calif.). They used gait and dynamic electromyography (EMG) to quantify quadriceps activity while walking.
In the abstract, the researchers found that CR-TKAs “may predispose to increased quadriceps demand.” They also found a greater EMG activity in amplitude and area under the curve for the operated knees, as well as a three times greater EMG activity and muscle activity while walking. There were similar results in both knees from onset and duration of muscle activity.
Disclosure: The authors have no relevant financial disclosures.