This article describes a minimally invasive plate osteosynthesis technique for midshaft fractures of clavicles using intramedullary indirect reduction and prebent plates with 3D printing models. This technique allows for easy reduction of fractures with accurate prebent plates and minimal soft tissue injury around the fracture site.

Flatfoot is a commonly observed three-dimensional foot deformity combined with hindfoot valgus, reduced me-dial longitudinal arch height, and forefoot abduction. 1,2) Midfoot breakage causes a decrease in the hardness of the lever. Forefoot abduction and heel valgus cause the propulsive force to be less effective as the muscles act in a different direction to the lever at a certain angle. In terms of kinematics, the flatfoot leads to lever arm dysfunction due to the flexible, short lever arm. 3,4) Thus, to produce push-off moments on the sagittal plane during gait, the gastrocnemius-soleus complex should generate more