Abstract
Metastatic disease is the most common pathologic cause of bone destruction, and the upper extremity is frequently involved. This location presents many surgical challenges, but there have been several recent implant and technique-related advances that have improved outcomes. Patients can be treated nonsurgically, with radiation or with surgery, depending on patient characteristics, signs/symptoms, primary diagnosis, location, and extent of bone destruction. Most locations in the upper extremity besides the humerus can be treated nonsurgically or with radiation. This is also true of the humerus, but when surgery is indicated, plate fixation is acceptable when adequate proximal and distal cortical bone is present for screw purchase. Intramedullary nailing is used frequently in metastatic humeral disease as well, especially in the diaphysis. When extensive destruction or disease progression precludes internal fixation, a resection with endoprosthetic reconstruction can be considered. Oncologic hemiarthroplasty endoprosthetics still have a role, but reverse shoulder designs are beginning to show improved function. Humeral prosthesis designs are continuing to improve, and are becoming more modular, with custom implants still playing a role in certain challenging scenarios.
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