RECONSTRUCTION USING THE SADDLE PROSTHESIS FOLLOWING EXCISION OF PRIMARY AND METASTATIC PERIACETABULAR TUMORS

From 1988 to 1991, 17 patients with malignant periacetabular tumors un derwent limb-sparing surgery and reconstruction using the saddle prost hesis, There were 8 patients with primary malignant lesions (Group 1), and 9 patients with metastatic or systemic tumor involving the periac etabular pelvis (Group 2), All resections included excision of the ace tabulum, Patients ranged in age from 24 to 76 years (average, 59.8 yea rs), Local control was achieved in all patients, Wide margins were obt ained in all patients with primary pelvic tumors, Functional outcomes were rated as follows excellent (10), good (2), fair (1), and poor (4) , Three patients, all of whom had pulmonary metastasis before surgery, died within 8 months of surgery, Of the remaining 14 patients, 5 pati ents died between 6 and 28 months after the index procedure, At the en d of the folIowup period, 9 patients were still alive (6 in Group 1 an d 3 in Group 2), with a followup period ranging from 15 to 62 months ( average, 33.4 months), The overall results for surviving patients were 7 excellent and 2 good results, with no fair or poor results.