Case: We describe the case of a 26-year-old patient diagnosed with Blount disease. She underwent a medial oblique supracondylar biplanar closing-wedge osteotomy of the distal femur followed by a medial oblique biplanar opening-wedge osteotomy of the proximal tibia. 3D printed cutting guides were used for the procedures. At 18 months after surgery, the patient is pain-free and walks without aids.
Conclusions: Using 3D printed guides allowed for accurate correction of the deformity and reduced the risk of damaging critical structures. These guides could be an appropriate alternative for the surgical treatment of patients with Blount disease.