Аннотация:Introduction Bone tumors of the sacroiliac joint often have a poor prognosis because of late diagnosis and difficult
treatment.
The aim of the study to assess the surgical technique of reconstruction of the sacroiliac joint after resection of pelvic
bone tumors and to determine oncological and functional results.
Material and methods. Since 2005 to 2015 years 27 patients with bone tumors of sacroiliac joints were operated in
Russian Cancer Research Center. In all cases reconstruction of pelvic ring were performed. Patient with acetabulum
involvement were excluded. There were 2 benign and 25 malignant tumors. The most often histological type was
chondrosarcoma. Surgical procedure included tumor removing, reconstruction of pelvic ring with screws and rods and
followed rectoabdominal flap rotation for adequate wound covering. In 7 cases we used computed-assisted navigation
for safe margin during resection. The functional results were based on MSTS scoring system.
Results. The mean surgical time was 7 hours, mean bloodloss was 2400 ml. Resection with clear margin was achieved
in twenty-six patients, and contaminated only on 1 patient. Twelve patients died: ten patients died due to tumor
progression and two patients from other reasons. Local recurrence occurred in 6 cases (3 with distant mets). Deep
infection observed in three patients (without rectoabdominal flap rotation), other patients had good wound healing.
Functional results depended on nerve roots sacrifice due to involving in tumor.
Conclusion. Tumor resection of sacroiliac joint tumors is a difficult surgical procedure with uncertain prognosis. Radical
surgery, reconstruction of pelvic ring and rectoabdominal flap rotation should be the treatment of choice for this tumors.