Proximal FEmur Reconstruction or Internal Fixation fOR Metastases (PERFORM) Trial

The Proximal FEmur Resection or Internal Fixation fOR Metastases (PERFORM) trial is a multi-centre randomized controlled trial that aims to test a paradigm shift in the oncological surgical management of patients with metastatic bone disease (MBD) of the proximal femur. The PERFORM trial will aim to determine if resection and endoprosthetic reconstruction improves patient-important outcomes compared to internal fixation in patients with MBD of the proximal femur. MBD afflicts the majority of patients with advanced stage carcinomas and is the most common oncologic disease of the skeleton. The proximal femur is the most commonly affected location in the appendicular skeleton and is a source of significant morbidity affecting patient mobility and quality of life. Stabilization of an impending or actual fracture of the proximal femur resulting from MBD has historically been achieved with internal fixation using intramedullary nails, plates and screws. This approach is meant to provide enough stability to ambulate without pain for the remainder of the cancer patient's life. However, many patients with metastatic cancer are experiencing longer life spans due to advances in systemic treatment options. Therefore, the traditional methods of stabilizing bones in the setting of MBD may no longer be meeting the standard of outcomes required for patients who can now live for years with their disease. Internal fixation, which is by nature a palliative surgery, results in disease relapse in nearly 20% of patients, most often due to local MBD recurrence. Alternatively, complete resection of the affected bone followed by reconstruction with an endoprosthesis, although more invasive and conferring higher surgical risks than an internal fixation procedure, reduces the risk of cancer recurrence at the surgical site to approximately 3%, thereby avoiding the deleterious effects on patient function and quality of life. However, the evidence supporting the use of resection and endoprosthetic reconstruction of the proximal femur, although promising, is retrospective and methodologically weak, resulting in a gap in the necessary evidence to change practice. The PERFORM trial will aim to determine if resection and endoprosthetic reconstruction improves patient-important outcomes compared to internal fixation in patients with MBD of the proximal femur. THe Methods Centre and proposed clinical sites collectively possess the methodological, logistical and clinical expertise required to successfully carry out the PERFORM trial. Ultimately, this trial has the potential to effect significant changes in orthopaedic oncology clinical practice and improve the oncologic, functional, and quality of life outcomes of patients with cancers that have metastasized to their proximal femur. While the introduction of a more invasive yet more durable procedure would represent a paradigm shift in the approach to this patient population, the challenge investigators confront is to support this practice change with high-quality, concrete evidence.