An **Amputation (Limb) Biopsy** is a critical diagnostic procedure performed to analyze tissue from a severely diseased, non-viable, or previously amputated limb. Unlike standard small-needle biopsies, this intervention involves sampling bone, muscle, or vascular structures from a major limb segment.

Pathologists utilize this diagnostic test to investigate aggressive underlying conditions, such as primary bone malignancies (like osteosarcoma), deep soft-tissue sarcomas, or severe, necrotizing infections. By providing definitive histological confirmation of a disease's type and margin involvement, the biopsy plays a crucial role in establishing accurate post-surgical diagnoses and tailoring subsequent oncological or medical treatments.