Exploring the Paradox: Revisiting Hemipelvectomy Choices in Complex Tumour Cases

External hemipelvectomy (EH) involves the surgical removal of an entire lower extremity and ipsilateral pelvis, often resulting in adverse effects on quality of life. Although limb-salvage surgery and internal hemipelvectomy are preferred for preserving function, EH remains a viable option in specific cases. This retrospective case review examines four patients who underwent EH for complex tumour cases, highlighting a paradoxical outcome in surgical decision-making. This review analysed three patients with pelvic bone sarcomas experiencing local recurrence and infections after limb-salvage surgery, leading to chronic depression and adjustment disorders and one with a benign aggressive tumour where limb-salvage surgery was insufficient for complete tumour removal. We assessed clinical courses, complications and postoperative outcomes through medical records, using the European Organisation for Research and Treatment of Cancer Core Quality-of-Life Questionnaire (EORTC QLQ-C30) for QOL and the Musculoskeletal Tumor Society (MSTS) scoring system for functional outcomes. Despite the initial hesitance and apprehension, all patients reported notable enhancements in quality-of-life post-surgery, despite low functional scores due to the absence of a lower extremity. Improvements were particularly evident in social and emotional well-being demonstrating that, although mobility was compromised, the surgical intervention alleviated chronic pain and distress. This review highlights the importance of reconsidering EH in selected cases where limb-salvage surgery is limited, emphasising that even in the face of significant functional loss, the potential for improved quality-of-life can justify the decision for EH.