What limb defect is characterized by the absence of the fibula?

The condition characterized by the absence of the fibula is termed "paraxial fibular hemimelia." This defect typically involves an incomplete development of the fibula, resulting in varying degrees of leg length discrepancy, ankle deformities, and functional impairments. Paraxial fibular hemimelia specifically refers to a condition where the fibula is either partially or completely absent, but it primarily describes a situation related to the interruption of development in the paraxial mesoderm, from which the fibula is derived.

Understanding the nature of limb defects is crucial for appropriate diagnosis and treatment planning in orthotics and prosthetics. In cases of paraxial fibular hemimelia, individuals may require specialized interventions or prosthetic solutions to compensate for the changes in limb mechanics and function caused by the absence of the fibula. This acknowledges not just the physical absence of the bone, but also the broader implications for mobility and alignment.

The other choices describe different conditions which do not specifically refer to the absence of the fibula. Complete phocomelia typically refers to a severe limb reduction defect affecting both upper and lower limbs. Pre or post axial fibular hemimelia relates to amelia or other variations in limb development but does not directly indicate