This figure illustrates the surgical technique. A: Manual drilling is performed perpendicular to the joint line in both anterior (left) and lateral (right) views. B: During drilling, it is crucial to remain perpendicular to the distal femoral joint line, performing osteotomies as needed. These can be done either via percutaneous osteoclasis or through a lateral open approach (this figure was created by the authors to be used in this article). C: The exit point for the drill bit is at the femoral neck, allowing for valgus fixation to prevent coxa vara deformity and the risk of lateral nail exit or femoral neck fracture. To facilitate this, a subtrochanteric osteotomy may be performed. D: The male component is introduced percutaneously through the knee and impacted into the distal femoral epiphysis.