Abstract
One hundred twenty-three patients from primary osteoarthritis of the hip joint were reviewed radiologically and clinically.
Three basically different types of primary osteoarthitis were described radiologically for the cases at the advanced stage in combination with the severity index as semiquantative evaluation for deterioration of the disease.
Three different types are lateral displacement of the head or subluxation type, deformed or destructive head type, and concentric or protrusion type.
The correlation was studied between clinical observation and radiological type and severity as well.
It has been discussed on etiological factor such as anatomical, vascular, and metabolic factor in relation to aging and pressure imbalance in the hip joint.
It was suggested that treament of primary osteoarthritis, especially the operative method should be properly chosen after more accurate of clinical and radiological evaluation.
