RESUMEN
The traditional treatment for primary malignant tumors involving the innominate bone is hemi-pelvictomy.In recent years, under the control of chemotherapy or radiation, partial or complete resection of innominate bone with lower extremities maintained has been reported.Since 1983, five patients in our hospital have undergone resection of hemi-pelves and femoral heads, and have been inserted by titanium-alloy hemi-pelves and total hip prostheses.The operations were uneventful.Among the five patients, the first and the second were diagnosed as condrosar-coma. Before and after operations, the two patients were treated with a large dosage of chemotherapy and had no reactions.During the follow-up for two years and a half. They were pain-free in affected limbs and could walk with canes.The other three patients diagnosed as giant-cell tumors were followed up from half a year to one year, and they all could walk with crutches.Based on the five cases, we think that in some very carefully selected cases, a limb-saving procedure-inserting a prosthesis after performing hemi-pelvictomy-can lead to a good function and maintain the limb length.