An experimental study of hip stability in human newborn cadavers.

The less frequent variety of hip dislocation occurs before birth and may be associated with neuromuscular disorders such as arthrogryposis or myelomeningocele. The more common variety occurs at or shortly after birth. Therefore, in the common variety the acetabulum is well formed with secondary changes developing rapidly if the hip remains dislocated (13). Trueta (17) states that the latter ought to be called infantile dislocation of the hip (IDH) rather than congenital disloca.tion of the hip (CDH). Ligament of the head of the femur is the official term of the Paris Nomina Anatomica. Hereafter the abbreviation LHF will be used whenever the ligament is referred to.