Description
In this VTT, Claire Shannon discusses fibular hemimelia, the most common congenital longitudinal deficiency of the lower limb. The presentation begins with insights on the epidemiology of fibular hemimelia, noting its rarity, with estimates of occurrence varying from 7.4 per 20 million live births to 1 in 40,000 to 50,000. Claire elaborates on the typical unilateral presentation and genetic theories related to its development, suggesting a spectrum of abnormalities affecting the limb bud rather than a singular cause, such as spontaneous mutations or developmental disruptions.
She details five categories of deformities associated with fibular hemimelia, emphasizing tibial deformities, absent or hypoplastic fibulae, and common issues such as genu valgum and knee instability. Repair strategies focus on addressing limb length discrepancies, which can range dramatically from 5 to over 25 centimeters.
The presentation is well-structured, introducing a classification system by Paley, which aids in determining prognosis and treatment options for varying degrees of severity in limb deficiency. Types range from relatively mild to severe forms, necessitating surgical interventions and lengthening procedures to improve limb function and appearance.
This overview concludes with considerations for complications and clinical decision-making in managing affected individuals, particularly regarding their developmental implications and subsequent treatments.