Fig. 4

The technique applied for permanent epiphysiodesis using a cannulated bone trephine (EpiStop™). K-wire-guided impaction of the trephine through a lateral incision at the distal femur (a–d). Fluoroscopic (e–f) and macroscopic (i) control of the complete resection of the central growth plate. Final result after reinsertion of the 90°-rotated bone cylinder, showing the vertically aligned growth plate (g–h, j–l)