Upfront Surgical Resection for Osteosarcoma

This prospective, non-randomized pilot study will assess patient-reported functional outcomes of upfront surgical resection in patients with newly diagnosed, biopsy-proven, localized osteosarcoma of the extremity or the pelvis. Following biopsy, all patients will undergo wide excision of the tumor followed by systemic multi-agent cytotoxic chemotherapy consisting of a regimen at least equivalent to the standard of care of high dose Methotrexate, Doxorubicin, and Cisplatin (MAP). Patients and/or their parent/guardian will be administered PROMIS (Patient-Reported Outcomes Measurement Information System) questionnaires, while surgeons will be administered the Musculoskeletal Tumor Society (MSTS) questionnaire at various timepoints through the first year post-surgery.