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Table 2 Patients’ details (quantity, gender, age, obesity, time until explantation) and the development of joint angles (aFTA, aLDFA and mMPTA) and the intermalleolar distance (IMD) as well as relapses, overcorrections and incomplete corrections as a function of the area treated (bilateral femoral medial, bilateral tibial medial and bilateral femorotibial)

From: Treatment of genu valgum in children by means of temporary hemiepiphysiodesis using eight-plates: short-term findings

  Physiological value range Femoral medial Tibial medial Tibial and Femoral medial
Number   34 23 36
Girls absolute / %   13 / 15% 7 / 30% 19 / 53%
Age at implantation median (min-max)   13 +/− 1.63 years 12 +/− 1.79 years 12 +/− 1.79 years
Time to explantation in months median (min-max)   14 +/− 5.05 months 17 +/− 5.46 months 13 +/− 7.33 months
Number of obesity absolute / %   18 / 53% 9 / 39% 11 / 30,6%
Before surgery
anatomical femorotibial angle (aFTA) median (min-max)   169 +/− 2.76 170 +/− 2.43 168 +/−2.88
intermalleolar distance in cm median (min-max)   12 +/− 2.5 11 +/− 2.34 12 +/−3.04
anatomical lateral distal femoral angle (aLDFA) median (min-max) 81 (79–83) 77 +/−2.01 81 +/− 1.90 76 +/−3.25
medial proximal tibial angle (MPTA) median (min-max) 87 (85–90) 89 +/−0.98 92,5 +/−2.82 91 +/−4.75
at material removal
anatomical femorotibial angle (aFTA) median (min-max)   177 +/−3.47 177 +/− 2.97 179 +/− 5.31
intermalleolar distance in cm median (min-max)   0 +/−2.85 0,25 +/− 2.37 0 +/−1.17
anatomical lateral distal femoral angle (aLDFA) median (min-max) 81 (79–83) 84.5 +/−4.25 82 +/− 2.01 84.5 +/−2.88
medial proximal tibial angle (MPTA) median (min-max) 87 (85–90) 89 +/− 1.5 88 +/−2.51 88 +/−3.27
Recurrence absolute/ %   1 / 2.9% 1 / 4.3% 2 / 5.5%
Overcorrection absolute/ %   1 / 2.9% 0 2 / 5.5%
Incomplete correction due to physiological growth gap closure absolute/ %   2 / 5.9% 2 / 8.6% 2 / 5.5%
  1. Presented in the median (standard deviations) as well as absolute and percentage values