At Gangnam(GN) Champion Orthopedic Surgery(OS) Hospital, we perform surgery to correct bowed arm varus and valgus. Cubitus varus valgus arms refer to arms that are bent, with gunstock deformity, and although there are cases where it is congenital, there are more patients with bent arms that are acquired. If the arm is bent inward, it is called cubitus varus, and if it is bent outward, it is call..