1. What is the most commonly fractured carpal bone?
A. Lunate
B. Scaphoid
C. Triquetrum
D. Hamate
Answer: B. Scaphoid
Rationale: The scaphoid bone is the most commonly fractured carpal bone due to its location
and involvement in falls onto an outstretched hand.
2. What is the primary function of the anterior cruciate ligament (ACL)?
A. Prevent valgus stress
B. Prevent posterior displacement of the tibia
C. Prevent anterior displacement of the tibia
D. Prevent hyperextension
Answer: C. Prevent anterior displacement of the tibia
Rationale: The ACL is responsible for stabilizing the knee joint by preventing anterior
displacement of the tibia relative to the femur.
3. Which type of fracture is most commonly associated with osteoporosis?
A. Comminuted fracture
B. Greenstick fracture
C. Pathologic fracture
D. Compression fracture
Answer: D. Compression fracture
Rationale: Osteoporosis commonly leads to weakened bones, making compression fractures,
particularly in the vertebrae, more prevalent.
4. What is the most common complication of a femoral shaft fracture?
A. Fat embolism syndrome
B. Nerve injury
C. Malunion
D. Osteomyelitis
Answer: A. Fat embolism syndrome
Rationale: Long bone fractures like the femoral shaft are at risk for fat embolism due to fat
droplets entering the bloodstream.
, 5. What is a common sign of compartment syndrome?
A. Decreased pain
B. Loss of sensation
C. Absent pulses
D. Pain out of proportion to the injury
Answer: D. Pain out of proportion to the injury
Rationale: Severe pain not relieved by analgesics is a hallmark of compartment syndrome,
requiring immediate intervention.
6. What is the primary purpose of a cast window?
A. To allow for inspection of the skin
B. To reduce pressure within the cast
C. To improve patient comfort
D. To facilitate X-ray evaluation
Answer: A. To allow for inspection of the skin
Rationale: Cast windows enable inspection of wounds or skin integrity underneath the cast.
7. Which imaging modality is most sensitive for diagnosing stress fractures?
A. X-ray
B. MRI
C. CT scan
D. Ultrasound
Answer: B. MRI
Rationale: MRI is the most sensitive imaging modality for detecting stress fractures, especially
in their early stages.
8. What is the function of a Boston brace?
A. Correct lumbar lordosis
B. Manage scoliosis
C. Stabilize cervical fractures
D. Treat kyphosis
Answer: B. Manage scoliosis
Rationale: The Boston brace is commonly used to manage scoliosis, particularly in growing
adolescents.
A. Lunate
B. Scaphoid
C. Triquetrum
D. Hamate
Answer: B. Scaphoid
Rationale: The scaphoid bone is the most commonly fractured carpal bone due to its location
and involvement in falls onto an outstretched hand.
2. What is the primary function of the anterior cruciate ligament (ACL)?
A. Prevent valgus stress
B. Prevent posterior displacement of the tibia
C. Prevent anterior displacement of the tibia
D. Prevent hyperextension
Answer: C. Prevent anterior displacement of the tibia
Rationale: The ACL is responsible for stabilizing the knee joint by preventing anterior
displacement of the tibia relative to the femur.
3. Which type of fracture is most commonly associated with osteoporosis?
A. Comminuted fracture
B. Greenstick fracture
C. Pathologic fracture
D. Compression fracture
Answer: D. Compression fracture
Rationale: Osteoporosis commonly leads to weakened bones, making compression fractures,
particularly in the vertebrae, more prevalent.
4. What is the most common complication of a femoral shaft fracture?
A. Fat embolism syndrome
B. Nerve injury
C. Malunion
D. Osteomyelitis
Answer: A. Fat embolism syndrome
Rationale: Long bone fractures like the femoral shaft are at risk for fat embolism due to fat
droplets entering the bloodstream.
, 5. What is a common sign of compartment syndrome?
A. Decreased pain
B. Loss of sensation
C. Absent pulses
D. Pain out of proportion to the injury
Answer: D. Pain out of proportion to the injury
Rationale: Severe pain not relieved by analgesics is a hallmark of compartment syndrome,
requiring immediate intervention.
6. What is the primary purpose of a cast window?
A. To allow for inspection of the skin
B. To reduce pressure within the cast
C. To improve patient comfort
D. To facilitate X-ray evaluation
Answer: A. To allow for inspection of the skin
Rationale: Cast windows enable inspection of wounds or skin integrity underneath the cast.
7. Which imaging modality is most sensitive for diagnosing stress fractures?
A. X-ray
B. MRI
C. CT scan
D. Ultrasound
Answer: B. MRI
Rationale: MRI is the most sensitive imaging modality for detecting stress fractures, especially
in their early stages.
8. What is the function of a Boston brace?
A. Correct lumbar lordosis
B. Manage scoliosis
C. Stabilize cervical fractures
D. Treat kyphosis
Answer: B. Manage scoliosis
Rationale: The Boston brace is commonly used to manage scoliosis, particularly in growing
adolescents.
