Comparison of Gap Balancing vs Measured Resection Technique in Total Knee Replacement (TRK) Surgery

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Gap Balancing and Measured Resection Techniques Study

Among many studies performed in this area, very few have focused on simultaneous bilateral total knee arthroplasty. A recent study in this regard is the one conducted by Dr. Sashin Tapalski. 

 

They performed a randomized prospective study to compare the two techniques in patients undergoing simultaneous bilateral total knee arthroplasty. Whereby, one technique was performed in each knee. 50 subjects were enrolled into study. The inclusion criteria were osteoarthritic varus knee, with similar deformities in both knees. Subjects were followed up for a minimum of two years

Study Results

The author reported that the knees balanced via the gap balance technique had significantly more posteromedial bone removed from the femur. Knees in the gap balance group tended to require more medial knee release in extension and tended to have smaller size femoral components as a result of cutting more bone from the femur inflection. 

 

The modular tibial polyethylene bearing intended to be thicker in the gut balance group. Despite these differences average knee flexion and functional revised oxford near score a two-year follow-up were not statistically different. 

They concluded that a two-year follow-up there were no difference between the function and scores using the 2 techniques.