Final answer:
The death of bone tissue due to cut-off blood supply after trauma is called avascular necrosis. It occurs when blood flow is disrupted by a fracture, leading to bone cell death.
Step-by-step explanation:
The death of bone tissue due to a cut-off blood supply, typically as a result of trauma, is called avascular necrosis. When a bone breaks, the blood vessels within can tear, leading to the formation of a hematoma and subsequent disruption of blood flow. This lack of nutrients can cause bone cells to die. Avascular necrosis is a condition that underscores the importance of blood supply in bone health and bone repair processes. In contrast, osteoarthritis refers to a type of joint disease caused by the deterioration of joint cartilage; arthrocentesis is a procedure involving the extraction of fluid from a joint; rheumatoid arthritis is an autoimmune disorder affecting joints; and arthrodesis is the surgical fusion of two bones to immobilize a joint.