What is characterized as a missing tibia down, including the tibial side of the foot?

The condition described as a missing tibia, including the tibial side of the foot, aligns with the concept of tibial hemimelia. In this context, “pre-axial” refers to the missing part being on the side of the big toe, while “post-axial” refers to the missing part on the side of the little toe. This condition typically results in the absence of the tibia and can lead to significant challenges in locomotion and limb function.

Tibial hemimelia is often characterized by varying degrees of skeletal malformations, including reductions or complete absence of bone structure in the lower leg, precisely as indicated in the question.

The other provided options relate to different limb deformities or congenital conditions, but they do not specifically address the total absence of the tibia and associated structural integrity on the tibial side of the foot in the way that tibial hemimelia does. Phocomelia typically involves the absence of long bones (like the femur or humerus) and does not refer specifically to the tibia. Therefore, the choice accurately describes the clinical presentation outlined in the question.