Orthopaedic Trivia Quiz

Test your orthopaedic trivia knowledge. While you’re waiting for the bus or just resting, take a minute and see how you do. Correct answers can be found online at www.aaosnow.org/trivia or use your smart phone to scan the code and go directly to the answers.

Ligamentum flavum means ligament of what color?

  1. Blue
  2. Red
  3. Purple
  4. Yellow

D. The ligamenta flava are a series of ligaments of yellow elastic tissue that connect the laminae of adjacent vertebrae from the axis to the sacrum.

For which of the following would lengthening be most likely indicated?

  1. Brachydactyly
  2. Ectrodactyly
  3. Camptodactyly
  4. Clinicodactyly

A. Brachydactyly, shortness of the fingers or toes. Ectrodactyly describes a deficieny or absence of one or more of the central digits of the hand or foot (“lobster-claw hand”). Camptodactyly indicates a fixed flexion deformity of the interphalangeal joint of a finger, usually the little finger. Clinicodactyly is a bending or curvature of a finger (again, usually the little finger).

One type of Cornelia de Lange syndrome also is known by the name of her hometown. What is it?

  1. Aukland achondroplasia
  2. Amsterdam dwarfism
  3. Anaheim autism
  4. Andalusia dementia

B. Cornelia de Lange syndrome is a congenital condition that usually includes growth retardation, developmental delay, hirsutism, limb abnormalities, and facial growth discrepancies. Professor de Lange lived and worked in Amsterdam.

Aviator’s astragalus describes a fracture often suffered by pilots in the early 20th century. What is the more current name for this injury?

  1. Fracture of the 5th lumbar vertebra.
  2. Fracture of the anterior-inferior iliac wing
  3. Fracture of the talus
  4. Fracture of the olecranon
  5. Fracture of the metatarsals

C. Astragalus was an early name for the talus, and the fracture “avaiator’s astragalus” described was caused by the impact of the rudder bar, which was controlled by the pilot’s foot.

Dupuytren contracture is most common in people of what ancestry?

  1. Native American
  2. Spanish
  3. Viking
  4. Japanese

C. Although the cause of Dupuytren contracture is not well-defined, it is known to run in families: 60% to 70% of individuals with Dupuytren contracture have a family history of the condition. It is most common in older (> 40 years) men (approximately 10:1 male:female) with Northern European ancestry (e.g., those with a Viking ancestry).

The San Francisco 49ers won the Super Bowl all 5 times they appeared. The 1985 Super Bowl was at Stanford Stadium, but it has never been played in San Francisco. Unlike the Super Bowl, San Francisco has been a preferred site for the AAOS Annual Meeting. Including 2012, how many times has San Francisco hosted the AAOS Annual Meeting?

  1. 6
  2. 8
  3. 10
  4. 12
  5. 10

C. 10

Trivia Questions from Wednesday, February 8

Who first described Legg-Calvé-Perthes disease?

  1. Arthur Legg
  2. Jacques Calvé
  3. Georg Perthes
  4. Waldenström
  5. Karel Maydl

E. Maydl described the condition in 1897, followed by Waldenström in 1909, and then Legg, Calvé, and Perthes in 1910.

Where would you look for the Hawkins sign to determine the possibility of osteonecrosis after fracture?

  1. Hip
  2. Knee
  3. Ankle
  4. Wrist
  5. Elbow

A. The Hawkins sign is a subchondral radiolucent band in the dome of the talus. The absence of the Hawkins sign indicates a lack of revascularization of the talar after fracture of the talus.

Orthopaedists love their acronyms! How many of the following can you define?

  1. PASTA
  2. PLIF
  3. DISI
  4. SLAP
  5. STIR sequence

A. Partial articular supraspinatus tendon avulsion
. Posterior lumbar interbody fusion
. Dorsal intercalated segment instablilty
. Superior labral tear from anterior to posterior
. Short-tau inversion recovery

Radiographs (X-rays) dramatically changed the practice of orthopaedic surgery. What year did Wilhem Röntgen produce the first X-rays?

  1. 1875
  2. 1885
  3. 1895
  4. 1905
  5. 1915

C. Röntgen produced the first X-rays in 1895.

In 1974, the New York Times reported in its Patents of the Week a new diagnostic method called “nuclear magnetic resonance.” What disease or condition was this new method purported to identify?

  1. Osteoporosis
  2. Cancer
  3. Heart disease
  4. Diabetes
  5. Infertility

B. According to the patent holder, Dr. Raymond V. Damadian, a physician and biophysicist at Downstate Medical Center in Brooklyn, the method could distinguish normal from cancerous tissue. He later retracted his 1977 contention that the technique had been used to discover cancer in a living patient. In the early 1980s when the technology became popular, its name was changed to “magnetic resonance imaging” because some patients were frightened by the suggestion of nuclear radiation.

Many fractures are known by those who first described them. Match the following eponyms to the fractured bone.

  1. Barton fracture
  2. Chopart fracture
  3. Maisonneuve fracture
  4. Stieda fracture
  5. Rolando fracture
  1. Thumb metacarpal
  2. Distal radius
  3. Midfoot
  4. Proximal fibula
  5. Femoral condyle

A-2, B-3, C-4, D-5, E-1.

Some fractures are described by their etiology or the occupation of persons most likely to sustain them. Match the following descriptions to the fractured bone.

  1. Nightstick fracture
  2. Boxer’s fracture
  3. Chauffeur’s fracture
  4. Clay-shoveler’s fracture
  5. Hangman’s fracture
  1. Radial styloid
  2. Ulna
  3. Second cervical vertebra
  4. Fifth metacarpal neck
  5. Lower cervical or upper thoracic vertebrae

A-2, B-4, C-1, D-5, E-3.

Trivia Questions from Tuesday, February 7

For how many people was Sinding-Larsen-Johansson syndrome named?

  1. One
  2. Two
  3. Three
  4. Four

B. Two: Christian Magnus Flasen Sinding Larsen (Norwegian) and Sven Johannson (Swedish)

Who would you pick for your basketball team, an individual with Morquio syndrome or one with Marfan syndrome?

  1. Morquio syndrome
  2. Marfan syndrome

B. Morquio syndrome is a form of dwarfism, while Marfan syndrome describes an individual who is very tall and slender and has long arms and legs.

The coccyx is most commonly composed of how many vertebrae?

  1. Two
  2. Three
  3. Four
  4. Five

C. The coccyx usually is formed of four rudimentary vertebrae.

In what part of the body are the gemelli muscles located?

  1. Ankle
  2. Knee
  3. Hip
  4. Elbow
  5. Shoulder

C. The gemelli muscles are a pair of small muscles arising from the margins of the lesser sciatic notch and inserting into the tendon of the obturator internus.