Musculoskeletal System Quiz

What is the term for a permanent change in anatomical structure that cannot be voluntarily corrected?

• Postural deformity

• Structural deformity

• Functional deformity

• Fixed deformity

Which condition is characterized by the progressive softening and disintegration of articular cartilage?

• Paget's disease

• Septic arthritis

• Osteoarthritis

• Rheumatoid arthritis

Which condition is characterized by excessive bone resorption followed by poor quality new bone formation?

• Paget's disease

• Achondroplasia

• Osteoporosis

• Rickets

What disease is shown in this image?

• Osteoarthritis

• Rheumatoid arthritis

• Osteomyelitis

• Osteoporosis

Answer explanation

Joint space narrowing is indicative of OA while

rheumatoid arthritis will show cartilage and bone erosion with associated deformities due to capsular stretching and tendon rupture.

Osteomyelitis will show the involucrum and sequestrum, while osteoporosis thin cortex and sparse trabeculae.

Which image shows osteoporotic bone?

• 1

• 2

• 3

Answer explanation

1 shows normal bone

2 shows the sparse trabeculae commonly seen in osteoporosis

3 shows the coarse, moth-eaten appearance typical of Paget's disease