RMO MS P19 - Spec Frac & Joint Injuries in Adults - Elbow & Arm

Which of the following is the most common mechanism causing a Colles' fracture?

• Direct blow to the dorsal wrist

• Fall on outstretched hand with wrist in extension

• Fall on flexed wrist

• High-impact axial compression

• Twisting injury of the forearm

Bennett's fracture involves which of the following anatomical components?

• Scaphoid and trapezium

• First metacarpal base and carpometacarpal joint

• Proximal phalanx of the thumb

• Trapezium and lunate

• Distal phalanx of the thumb

In adults, slower fracture healing is primarily due to:

• Higher calcium content in cortical bone

• Decreased vascularity of muscle

• Reduced periosteal activity

• Enhanced callus formation

• Increased mechanical stress

Which wrist bone is most commonly fractured in adults?

• Lunate

• Pisiform

• Hamate

• Scaphoid

• Capitate

Which of the following is a key radiographic sign of lunate dislocation?

• Terry Thomas sign

• "Spilled teacup" appearance on lateral view

• Widened radial styloid space

• Ulnar variance

• Volar beaking

Which fracture pattern is most susceptible to non-union due to retrograde blood supply?

• Greater tuberosity of humerus

• Olecranon

• Distal radius

• Scaphoid waist

• Shaft of ulna

Which of the following conditions often mimics a Smith's fracture clinically?

• Galeazzi fracture

• Colles' fracture

• Barton's fracture

• Radial head dislocation

• Ulnar styloid fracture

Which of the following is the most common complication of posterior elbow dislocation?

• Radial head fracture

• Ulnar nerve injury

• Compartment syndrome

• Biceps rupture

• Median nerve palsy

A Galeazzi fracture is defined as:

• Distal radius fracture with ulnar head dislocation

• Shaft fracture of radius with DRUJ disruption

• Ulnar shaft fracture with radial head dislocation

• Monteggia fracture variant

• Greenstick fracture of both forearm bones

An adult presents with elbow trauma and a "fat pad sign" on radiograph. What is the most likely fracture?

• Capitellar fracture

• Olecranon fracture

• Radial head fracture

• Lateral condyle fracture

• Distal humerus fracture