Mohsen Karami1, Adel Ebrahimpour1, Sohrab Keihani2, Meisam Jafari Kafiabadi3, Ramin Etemadi4. 1. Department of orthopedics, Taleghani Hospital Research Development Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 2. Akhtar Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 3. Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 4. Gorgan University of Medical Sciences, Gorgan, Iran.
Abstract
BACKGROUND: This study aimed to evaluate the efficacy of hemi-epiphysiodesis using a new device (X-plate) for the correction of genu valgum. METHODS: In total, 22 children with a total of 34 pathologic knee valgus deformities underwent the procedure and were followed up 25.3 months on average. RESULTS: The mean time to clinical correction of genu valgum was 10.9±2.2 months. Furthermore, the mean preoperative anatomic Lateral Distal Femoral Angle (aLDFA) and mechanical Tibia Femoral angle (mTFA) were obtained at 75.1±3.8 and 6±2.8 degrees, respectively. When clinical correction of the deformity was achieved, the mean of aLDFA and mTFA corrections were determined at 8.9±5.3 and 6.5±3.2 degrees, respectively. The mean speed of aLDFA and mTFA corrections were estimated at 0.8±0.45 and 0.6±0.3 degrees per month, respectively. The postoperative aLDFA and mTFA were measured at 84±4.2 and -0.8±2.9 on average. With a mean of 25.3±14.5 months at final follow-up, there were 6 (17.6%) mild valgus knees, 26 (75.5%) normal alignment knees, and only 2 (5.9%) mild varus knee within an acceptable clinical limit. CONCLUSION: Hemi-epiphysiodesis using X-plate at the distal physis of the femur is an effective and safe method for the treatment of valgus knee deformity in children.
BACKGROUND: This study aimed to evaluate the efficacy of hemi-epiphysiodesis using a new device (X-plate) for the correction of genu valgum. METHODS: In total, 22 children with a total of 34 pathologic knee valgus deformities underwent the procedure and were followed up 25.3 months on average. RESULTS: The mean time to clinical correction of genu valgum was 10.9±2.2 months. Furthermore, the mean preoperative anatomic Lateral Distal Femoral Angle (aLDFA) and mechanical Tibia Femoral angle (mTFA) were obtained at 75.1±3.8 and 6±2.8 degrees, respectively. When clinical correction of the deformity was achieved, the mean of aLDFA and mTFA corrections were determined at 8.9±5.3 and 6.5±3.2 degrees, respectively. The mean speed of aLDFA and mTFA corrections were estimated at 0.8±0.45 and 0.6±0.3 degrees per month, respectively. The postoperative aLDFA and mTFA were measured at 84±4.2 and -0.8±2.9 on average. With a mean of 25.3±14.5 months at final follow-up, there were 6 (17.6%) mild valgus knees, 26 (75.5%) normal alignment knees, and only 2 (5.9%) mild varus knee within an acceptable clinical limit. CONCLUSION: Hemi-epiphysiodesis using X-plate at the distal physis of the femur is an effective and safe method for the treatment of valgus knee deformity in children.