[Total knee replacement due to grade IV gonarthrosis]

To describe the clinical evolution of patients with total knee replacement surgery due to grade IV gonarthrosis secondary to varus angular deformity.

A descriptive trial where we included patients who underwent total knee arthroplasty due to gonarthrosis secondary to varus angular deformity. We used the following variables, sex, age, affected side, type of approach, type of prosthesis, type of gait post-surgically, infection, vascular status, post-surgical pain, rejection of prosthetic material, varusflection angular deformity pre and post-surgically.

We reviewed 13 files, 69.2% men and 30.8% women, the mean age was 72.38, minimum 56, maximum 82, DE 7.11 years. Six (46.2%) left knees and 7 (53.8%) right knees. All patients had a medial parapatellar approach and bone balancing, 23.1% had ligament balancing; 7.6% had a total knee replacement stabilized posteriorly and 93.3% not stabilized posteriorly; 1 (7.6%) patient had infection, none had vascular involvement, 76.9% had to walk with a cane, 15.4% walked on their own and 7.6% had no gait. The average grade of the angular deformity pre-surgery was 15.77 and the average post-surgery was less than or equal to 5 degrees, the difference of average grades pre and post-surgery was 36.719 and in flection 0.439, p = 0.00 and p = 0.669 respectively (paired t).

We can conclude that the clinical evolution of patients with gonarthrosis secondary to varus angular deformity who underwent TKA is good, complications are similar to those in the literature.