A) preoperative moderate SCFE frog leg view; B) postoperative radiograph; C) 12 postoperatively; D) left hip 5 months following prophylactic pinning; E) AP view 5 months after prophylactic pinning; F) right hip 5 months following prophylactic pinning; G) right hip last check-up frog-leg view; H) AP both hips 18 months after surgery; I) screw elongation in prophylactic pinning 18 months follow-up.