4. Congenital hip dislocation in walking children

Definition

• DDH (developmental dysplasia of the hip ) is a disorder that occurs due to abnormal development of acetabulum with or without hip dislocation
• Previously called congenital hip dysplasia!

Etiopathogenesis

• Mechanical theory- the shortage of amniotic fluid in the womb, the sciatic position with pelvic joints proximally bent and knee-joints spread are often the cause of luxatio
• Harmful factors during embryonic development
• Paralytic theory- assumes that the tone of adductors is stronger than that of the abductors.
• Phylogenetic theory - ontogenetic development of the pelvic joints falls behind compared to the phylogenetic one
• Genetic theory - parents who have been ill are 10 times more likely to pass the condition on to their offspring
• Lax joints - more common in girls for hormonal reasons

Classification

• Instabilitas coxae congenita.
• Instabilitas coxae congenita luxans.
• Instabilitas coxae congenita subluxans.
• Dysplasia coxae.
• Dysplasia coxae congenita.
• Dysplasia coxae evolotiva.
• Dysplasia coxae tarda.
• Subluxatio coxae.
• Subluxatio coxae congenita.
• Subluxatio coxae evolotiva.
• Subluxatio coxae tarda.
• Luxatio coxae.
• Luxatio coxae congenita vera.
• Luxatio coxae evolotiva.