20240802 Hand # - Dr Wang

What is the potential chronic deformity of neglected mallet injury?

• A. Swan-neck deformity

• B. Boutonniere deformity

• C. Ulna claw

• D. Rotational deformity

• E. Jersey finger

What is the mechanism of injury for flexor digitorum profundus avulsion injuries?

• A. Forces flexion of a maximally extended finger

• B. Forced extension of a maximally flexed finger

• C. Crush injury

• D. Axial loading force to a finger

• E. Axial traction of a finger

After reduction of a PIPJ dislocation, the joint remains subluxated. What is the possible cause?

• A. A2 pulley injury

• B. Sagittal band injury

• C. Oblique retinacular ligament injury

• D. Soft tissue interposition in the joint

• E. Osteochondral injury

A young athlete is not able to actively extend his left middle finger PIP joint, however, full extension can be maintained after passive extension. What is the possible cause?

• A. PIPJ dislocation

• B. Central slip injury

• C. Lateral band injury

• D. Terminal tendon avulsion

• E. Mallet finger

Which of the proximal phalanx deformity is never acceptable?

• 5 degrees rotational deformity

• 10 degrees sagittal angulation

• 5 degrees coronal angulation

• 3 mm shortening

• 5 degrees sagittal angulation