Functional outcomes of internal hemipelvectomy in paediatric patients with malignant bone tumours: a monocentric case series

A case series was conducted between January 2010 and January 2018, which included 17 paediatric patients under the age of 18 years (mean age 13.4 ±3.53), who underwent internal hemipelvectomy. Functional outcomes were assessed based on gait and categorised as either normal or abnormal. The most common diagnosis was Ewings Sarcoma in 14 (82.3%) patients. With regards to reconstruction, acetabular reconstruction was necessary in 1(5.9%) patient, and soft tissue coverage with flaps was required in 5 (29.4%) cases. Nerve injury was the most common complication noted, i.e. in 5(29.4%) cases. The disease-free survival rate was 12 (70.6%) patients (70.6%) at a median time of 72 months, while the overall mortality rate was 5(29.4%) patients with metastatic disease being the leading cause. Hence, it was concluded that internal hemipelvectomy is a viable surgical option in the paediatric population particularly when negative margins can be achieved without compromising the neurovascular structures.