Orthopedic questions

Question 1

What fracture configuration is ideal for the use of cerclage wires?

Answer 1

Long oblique

Question 2

How far apart from the fracture ends should the circlage wires be placed?

Answer 2

0.5cm or more

Question 3

Name the circlage wiring technique used on short oblique fractures in conjunction with a K-wire

Answer 3

Skewer pin

Question 4

What does a Salter Harris type III look like

Answer 4

Through the Physis and Epiphysis

Question 5

What fixation technique would be ideal for treatment of the fracture shown in this radiograph?

Answer 5

Pin and tension band

Question 6

What two types of Salter Harris fractures might go undiagnosed on initial radiographs?

Answer 6

Type I and V

Question 7

What type of fixation would be best treatment of a grade IIIA open fracture

Answer 7

External Skeletal fixitor

Question 8

What determmines the bending strength of a screw?

Answer 8

The inner core diameter

Question 9

What fractures must always be anatommically reconstructed?

Answer 9

Articular Fractures

Question 10

Name the condidion that can occur when a young animal’s comminuted femoral fracture is treated with ridgid immobiliation for an extended period of time

Answer 10

Qudracepts Contracture

Question 11

What is the configuration of the fracture seen in this radiograph?

Answer 11

Spiral

Question 12

Of the four A’s that are evaluated in the post-op fracture repair radiographs, which term relates to the positioning of the joints?

Answer 12

Alignment

Question 13

What is the disease process of the bone and what is the specific lesion indicated by the arrow?

Answer 13

Osteomylitis and a sequestrum

Question 14

In biomechanics, what is the term for the point at which a material transisions from elastic to plastic deformation?

Answer 14

Yield point

Question 15

Name two DDX for the radiographic lesion seen here

Answer 15

OSA, CSA, FSA Fungal Osteomyelitis, LSA, bone cyst

Question 16

What antibiotic is the best first choice for treatment of an open fracture?

Answer 16

Cefazolin

Question 17

What does the acronym “MIPO” stand for?

Answer 17

Minimally invasive plate osteosynthesis

Question 18

What is the most common complication associated with external skeletal fixation?

Answer 18

Pin tract morbidity/infection/drainage

Question 19

What percentage of the meduallary canal should filled by a steinman pin if it is the primary means of fixation?

Answer 19

70%

Question 20

What fixation methods can not be used in the radius?

Answer 20

Interlocking nail and intermedulary pin

Question 21

When placing cerclage wires how should they be positioned in reference to the long axis of the bone?

Answer 21

Perpendicular

Question 22

After achieving compression of short oblique fracture using a lag screw; you also place a plate to protect the compression and aposition achieved lag screw. What plating mode is demonstrated in this example?

Answer 22

Neutralization Plating