Endoprosthetic Reconstruction for Proximal Humerus Tumors

Area of Science:

• Orthopedic Surgery
• Oncology
• Biomedical Engineering

Background:

• Anatomic and reverse endoprosthetic reconstructions are primary surgical choices for proximal humerus tumor resection.
• Traditional anatomic endoprostheses offer a stable platform for arm function.
• Reverse endoprostheses have gained prominence due to enhanced stability and outcomes.

Purpose of the Study:

• To review functional outcomes and complications of modern anatomic and reverse endoprostheses.
• To compare the efficacy of different reconstructive techniques after proximal humerus tumor resection.

Main Methods:

• Literature review and synthesis of existing studies on anatomic and reverse endoprostheses.
• Analysis of functional outcomes, including range of motion and patient-reported scores.
• Evaluation of complication rates and implant survivorship.

Main Results:

• Reverse endoprostheses demonstrate superior patient-reported outcomes and revision-free implant survivorship compared to anatomic endoprostheses.
• Reverse endoprostheses offer improved shoulder motion and stability due to their semi-constrained design.
• Allograft prosthetic composites (APCs) may further enhance shoulder function but carry risks of delayed graft complications.

Conclusions:

• Reverse endoprostheses, including reverse APCs, are recommended for proximal humerus reconstruction after oncologic resection.
• These implants provide better functional outcomes and fewer postoperative complications than traditional reconstructive methods.