Chapter 44: Alterations of Musculoskeletal Function

Question 1

A pathologic fracture is a break at the site of a ___________ ___________ (such as a tumor), usually by force that would not fracture a ______ ____. Any disease process that weakens the bone (especially the cortex) predisposes the bone to pathologic fracture, commonly associated with tumors, infections, and metabolic bone disorders.

Answer 1

preexisting abnormality
normal bone

(p. 1541)

The term is usually reserved for malignancies, either benign or malignant.

(https://radiopaedia.org/articles/pathological-fracture?lang=us)

Question 2

Stress fractures occur in normal or abnormal bone that is subjected to ________ ______, such as occurs during athletics.

Answer 2

repeated forces

p. 1541

Question 3

Name 2 types of stress fractures.

Answer 3

fatigue fractures
insufficiency fractures

(p. 1541)

Question 4

What are insufficiency fractures?

Answer 4

Fragility fractures of osteoporosis and osteomalacia, and occur in bones lacking normal ability to deform and recover. (Normal stresses on abnormal bone; often occur in weightbearing bones.)

(p. 1541)