Abstract
Lumbar discogram is very useful as the method of deciding the surgical technic. We attempt to class the discogram by 6 types and introduce the surgical method by those type.
The materials are 89 cases.
1. Form I (relief type): This picture makes an outline of the herniated nucleus. 10 cases (1100) are ranked in this form, and partial herniotomy are indicated.
2. Form II (tear type): We can see the stricture between the original nucleus and the herniated tumor.
9 cases (10%) are ranked in this type, and isolated removals are indicated.
3. Form III (degenerate-type): A very degenerated and flat nucleus accompanys this type.
33 cases (33%) are ranked in this type, and subtotal discotomy are indicated.
4. Form IV (short tail-type), : There is a short tail behind the normal nuclear picture. 16 cases (16%) are ranked in this type, and partial herniotomy are indicated.
5. Form V (false negative): Normal nuclear picture is only seen.
16 cases (16%) are ranked in this type, and partial herniotomy are indicated.
6. Form V (dorsal moved type): Almost normal nuclear picture modes posteriorly.
5 cases are ranked, and are eruptively removed.
