Introduction:

The giant-cell tumor is an aggressive neoplasia, represents approximately from the 5 the 8.6% of primary bone tumors; more of 50% affects the pelvic extremity, being able to affect the totality of the bones.

Objective:

To present the case series of tumors around the knee and hip that we offered a tumoral joint replacement as an alternative to amputation.

Material and methods:

We present eight cases of extensive giant cells tumors, we did en bloc resection and tumoral joint replacement.

Results:

The clinical and radiological evolution was satisfactory, without postoperative complications and the most important, avoided an amputation with a better quality of life.

Discussion:

Alternative reconstructive treatment option with a recovery to its normal life in a 80% and a low index of complications.