Fibular hemimelia or longitudinal fibular deficiency
Children who have fibular hemimelia are born with a short or missing fibula (one of the two bones in the lower leg). Other bones in the leg, ankle, and foot can be affected too. Most children with Fibular hemimelia have it in one leg, but some have it in both. Experts who treat bone problems have several options to help kids with a hemimelia.
Fibular hemimelia is so rare. It can be scary for new parents who aren’t sure what is wrong with their child, especially when their doctors haven’t seen a case of Fibular hemimelia. “The congenital absence of the fibula, and it is the most common congenital absence of long bone of the extremities.” It is the shortening of the fibula at birth, or the complete lack thereof. Fibular hemimelia often causes severe knee instability due to deficiencies of the ligaments. Severe forms of fibula hemimelia can result in a malformed ankle with limited motion and stability. Fusion or absence of two or more toes are also common. In humans, the disorder can be noted by ultrasound in utero to prepare for amputation after birth or complex bone lengthening surgery.
The amputation usually takes place at six months, with removal of portions of the legs to prepare them for prosthetic use. The other treatments, which include repeated corrective osteotomies and leg-lengthening surgery (Ilizarov apparatus), are costly and associated with residual deformity.
Causes Fibular hemimelia
Scientists and doctors don’t know exactly why babies are born with fibular hemimelia. But they do know that nothing a mom does during pregnancy causes the problem. Parents can’t stop it from happening, but they can help kids get the best care.