Background: Prosthetic reconstruction may be a promising treatment for peri-acetabular malignantbonetumour; however, it is associated with a high complication rate.
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There were 23 primary malignantbonetumours, four metastatic tumours and four locally advanced primary tumours of the rectum.
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The use of extendible distal femoral replacements is a relatively new treatment alternative for malignantbonetumours in growing individuals.
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Methods: We retrospectively analyzed 11 patients with peri-acetabular malignantbonetumours treated by personalized 3D-printed hemipelvic prostheses after en bloc resection between 2015 and 2016.