[HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
**Question 1.** Which carpal bone receives the greatest compressive load during wrist
extension?
A) Scaphoid
B) Lunate
C) Trapezium
D) Pisiform
Answer: B
Explanation: The lunate lies centrally and bears the highest axial compressive forces when the
wrist is extended.
**Question 2.** The primary nerve supplying sensation to the palmar surface of the thumb is
the:
A) Ulnar nerve
B) Median nerve
C) Radial nerve
D) Musculocutaneous nerve
Answer: B
Explanation: The median nerve provides sensory innervation to the palmar thumb, index,
middle, and radial half of the ring finger.
**Question 3.** In Wallerian degeneration, the distal segment of a transected nerve:
A) Remains viable indefinitely
B) Undergoes immediate regeneration
C) Degenerates and is cleared by macrophages
D) Forms a neuroma within 24 hours
Answer: C
, [HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
Explanation: After axonal transection, the distal stump degenerates, and Schwann cells and
macrophages clear debris, preparing for possible regeneration.
**Question 4.** Which phase of bone healing is characterized by woven bone formation?
A) Inflammatory phase
B) Reparative phase
C) Remodeling phase
D) Hematoma phase
Answer: B
Explanation: During the reparative phase, mesenchymal cells differentiate into osteoblasts that
lay down woven bone, later remodeled into lamellar bone.
**Question 5.** Intrinsic tendon healing relies primarily on:
A) Synovial sheath nutrition
B) Vascular supply from the tendon sheath
C) Direct blood flow from the musculotendinous junction
D) Lymphatic drainage
Answer: A
Explanation: Intrinsic healing occurs within the tendon’s synovial environment, using diffusion
from the sheath rather than external vascular ingrowth.
**Question 6.** A ganglion cyst most commonly arises from which structure?
A) Bone marrow
B) Joint capsule or tendon sheath
C) Subcutaneous fat
D) Muscle fascia
, [HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
Answer: B
Explanation: Ganglion cysts are myxoid collections that originate from joint capsules or tendon
sheaths due to mucoid degeneration.
**Question 7.** The “Terry Thomas” sign on a PA wrist radiograph indicates:
A) Scaphoid fracture
B) Lunate dislocation
C) Scapholunate dissociation
D. Distal radius fracture
Answer: C
Explanation: A widened scapholunate interval (>3 mm) resembles a “gap” and is termed the
Terry Thomas sign, indicating scapholunate ligament disruption.
**Question 8.** In MRI, a high‑signal rim on T2‑weighted images of the TFCC suggests:
A) Degeneration only
B) Acute tear with fluid infiltration
C) Calcification
D) Normal variant
Answer: B
Explanation: Fluid entering a tear of the triangular fibrocartilage complex appears bright on T2,
indicating an acute or sub‑acute tear.
**Question 9.** The most sensitive electrodiagnostic test for carpal tunnel syndrome is:
A) Nerve conduction velocity of the median nerve across the wrist
B) Needle EMG of the thenar muscles
C) Upper limb sensory evoked potentials
, [HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
D) Compound muscle action potential of the ulnar nerve
Answer: A
Explanation: Median nerve sensory conduction across the carpal tunnel shows delayed latency,
the hallmark of carpal tunnel syndrome.
**Question 10.** Which of the following best describes the biomechanics of the scaphoid
during wrist motion?
A) It remains static while the lunate pivots
B) It translates volarly in flexion and dorsally in extension
C) It rotates radially in pronation only
D) It acts as a rigid bridge between radius and ulna
Answer: B
Explanation: The scaphoid moves volarly (palmar) during wrist flexion and dorsally during
extension, contributing to carpal kinematics.
**Question 11.** The “colles” fracture pattern is characterized by:
A) Dorsal angulation of the distal radius fragment
B) Volar angulation of the distal radius fragment
C) Intra‑articular split of the distal radius
D) Isolated ulnar styloid fracture
Answer: A
Explanation: A classic Colles fracture shows a dorsal tilt of the distal radius, often with radial
shortening and dorsal cortex disruption.
**Question 12.** Which fracture of the distal radius is most likely to be associated with a “silver
fork” deformity?
A) Smith fracture
Exam Preparation
**Question 1.** Which carpal bone receives the greatest compressive load during wrist
extension?
A) Scaphoid
B) Lunate
C) Trapezium
D) Pisiform
Answer: B
Explanation: The lunate lies centrally and bears the highest axial compressive forces when the
wrist is extended.
**Question 2.** The primary nerve supplying sensation to the palmar surface of the thumb is
the:
A) Ulnar nerve
B) Median nerve
C) Radial nerve
D) Musculocutaneous nerve
Answer: B
Explanation: The median nerve provides sensory innervation to the palmar thumb, index,
middle, and radial half of the ring finger.
**Question 3.** In Wallerian degeneration, the distal segment of a transected nerve:
A) Remains viable indefinitely
B) Undergoes immediate regeneration
C) Degenerates and is cleared by macrophages
D) Forms a neuroma within 24 hours
Answer: C
, [HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
Explanation: After axonal transection, the distal stump degenerates, and Schwann cells and
macrophages clear debris, preparing for possible regeneration.
**Question 4.** Which phase of bone healing is characterized by woven bone formation?
A) Inflammatory phase
B) Reparative phase
C) Remodeling phase
D) Hematoma phase
Answer: B
Explanation: During the reparative phase, mesenchymal cells differentiate into osteoblasts that
lay down woven bone, later remodeled into lamellar bone.
**Question 5.** Intrinsic tendon healing relies primarily on:
A) Synovial sheath nutrition
B) Vascular supply from the tendon sheath
C) Direct blood flow from the musculotendinous junction
D) Lymphatic drainage
Answer: A
Explanation: Intrinsic healing occurs within the tendon’s synovial environment, using diffusion
from the sheath rather than external vascular ingrowth.
**Question 6.** A ganglion cyst most commonly arises from which structure?
A) Bone marrow
B) Joint capsule or tendon sheath
C) Subcutaneous fat
D) Muscle fascia
, [HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
Answer: B
Explanation: Ganglion cysts are myxoid collections that originate from joint capsules or tendon
sheaths due to mucoid degeneration.
**Question 7.** The “Terry Thomas” sign on a PA wrist radiograph indicates:
A) Scaphoid fracture
B) Lunate dislocation
C) Scapholunate dissociation
D. Distal radius fracture
Answer: C
Explanation: A widened scapholunate interval (>3 mm) resembles a “gap” and is termed the
Terry Thomas sign, indicating scapholunate ligament disruption.
**Question 8.** In MRI, a high‑signal rim on T2‑weighted images of the TFCC suggests:
A) Degeneration only
B) Acute tear with fluid infiltration
C) Calcification
D) Normal variant
Answer: B
Explanation: Fluid entering a tear of the triangular fibrocartilage complex appears bright on T2,
indicating an acute or sub‑acute tear.
**Question 9.** The most sensitive electrodiagnostic test for carpal tunnel syndrome is:
A) Nerve conduction velocity of the median nerve across the wrist
B) Needle EMG of the thenar muscles
C) Upper limb sensory evoked potentials
, [HSCE] Hand Surgery Certifyingination Certification
Exam Preparation
D) Compound muscle action potential of the ulnar nerve
Answer: A
Explanation: Median nerve sensory conduction across the carpal tunnel shows delayed latency,
the hallmark of carpal tunnel syndrome.
**Question 10.** Which of the following best describes the biomechanics of the scaphoid
during wrist motion?
A) It remains static while the lunate pivots
B) It translates volarly in flexion and dorsally in extension
C) It rotates radially in pronation only
D) It acts as a rigid bridge between radius and ulna
Answer: B
Explanation: The scaphoid moves volarly (palmar) during wrist flexion and dorsally during
extension, contributing to carpal kinematics.
**Question 11.** The “colles” fracture pattern is characterized by:
A) Dorsal angulation of the distal radius fragment
B) Volar angulation of the distal radius fragment
C) Intra‑articular split of the distal radius
D) Isolated ulnar styloid fracture
Answer: A
Explanation: A classic Colles fracture shows a dorsal tilt of the distal radius, often with radial
shortening and dorsal cortex disruption.
**Question 12.** Which fracture of the distal radius is most likely to be associated with a “silver
fork” deformity?
A) Smith fracture
