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)
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% | |