Multifragmentary fracture, intact segmenta
These are complex fractures of the tibial diaphysis, with an intermediate, intact segmental fragment, thus without contact between the main proximal and distal fragments.
These fractures are classified as AO/OTA 42C2 fractures.
X-rays taken from Orozco R et al, (1998) Atlas of Internal Fixation. Used with kind permission.