Comparison of Radiological Measurements in Genu Valgum and Genu Varum Deformities Treated with Eight Plate Hemiepiphysiodesis

The aim of this study was to assess the effectiveness of eight-Plate application in groups with genu varum and genu valgum. In addition, we aimed to compare the radiological measurements between groups. We prospectively assessed 50 deformities in 34 patients who underwent surgery by the growth-controlled correction method using eight-Plate. The genu valgum group consisted of 39 deformities while the genu varum group consisted of 11 deformities. Gait patterns and range of motion in the knee joint were assessed in all patients. Again, changes in mechanical axis deviation (MAD), medial proximal tibial angle (MPTA), mechanical lateral distal femoral angle (mLDFA), and tibio-femoral angle (TFA) values were compared by obtaining pre- and post-operative orthoradiographs. There were significant differences in MAD, MPTA, mLDFA and TFA values before and after surgery in both groups. Neutral mechanical axis was achieved in 9 deformities (81.8%) in the genu varum group and in 31 deformities (79.5%) in the genu valgum group. In terms of treatment efficiency, no significant differences were found in radiographic values between groups. The hemiepiphysiodesis method using an eight-Plate is a reliable and effective method for the correction of deformities. Eight-Plate application provides similar improvements in the radiological values of both groups.