DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Anatomic location of lesser troch indicates... - ANSWER--Degree of
rotation
Is there any significant risk to blood supply with lateral approach to
proximal femur fx fixation? - ANSWER--No
What is potential risk involving blood supply in femoral neck fx? -
ANSWER--Retinacular arteries supply femoral neck and head; fracture
at femoral neck leads to avascular necrosis of head
Garden classification for femoral neck fx: - ANSWER--Type I: incomplete,
valgus impacted
Type II: complete, undisplaced
Type III: complete, displaced, some bone intact
Type IV: displaced fracture
What percent of femoral neck fx occur in women? - ANSWER--80%
Treatment options for femoral neck fx: - ANSWER--Garden type I and II
treated with closed pinning (3 screws)
Garden type III and IV treated with THA, hemiarthroplasty, or closed
pinning depending on age/health of patient
, DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What percent of intertroch fractures occur in women? - ANSWER--70%
Classification for intertroch fractures: - ANSWER--Stable, two-part
Unstable, comminuted
Reverse obliquity
What is the start point for the troch nail? - ANSWER--Tip of greater
trochanter (due to slight angle of bone so instrumentation doesn't
have to be right on top of patients)
What is anterior bowing? - ANSWER--113 cm radius of anterior
curvature
Which two nails are biomechanically similar? - ANSWER--Short and ES
Which nail should be used for subtroch? - ANSWER--Long nail with static
locked nail
How do you fixate reverse obliquity fx? - ANSWER--Long nail, locked and
static lag screw
Which fx pattern has bimodal distribution? What % of fx are this type? -
ANSWER--Subtroch - young males, old females; 10-30% of all hip fx
Associated with bisphosphonate use for osteoporosis
, DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Pro of ES nail over short nail? - ANSWER--Crosses past ismus of shaft,
can lead to less pain and more rotational stability
Width of lag screw and anti-rotation screw? - ANSWER--10.5 mm, 5 mm
Neck angle options for all nails? - ANSWER--125 degrees and 130
degrees
Prox diameter of all nails: - ANSWER--15.9 mm
Categories of subtroch fx: - ANSWER--Simple, wedge, complex
Which fx pattern is intracapsular? Which are extracapsular? - ANSWER--
Femoral neck; Intertroch & Subtroch
What length are all short nails? - ANSWER--20 cm
What lengths do long and ES nails come in? - ANSWER--30, 33, 36, 39, 42
cm
Medial migration of lag screw solved by? - ANSWER--Locking ring on lag
screw
, DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Lateral protrusion backout on lag screw solved by? How much post-op
captured collapse can you get? - ANSWER--Telescoping lag screw; up to
10 mm
Loss of reduction in left hips solved by? - ANSWER--Lefty lag screw
threaded counterclockwise
Rotational instability in unstable fractures solved by? - ANSWER--Anti-
rotation screw
All nails have ___ degree of lateralization - ANSWER--5
What additional tray do you need for long or ES nail? - ANSWER--Reamer
caddy
What two positions do you want hip in for troch reduction? - ANSWER--
Traction and internal rotation
Size of starting guide pin: - ANSWER--3.2 mm
Size of starting reamer: - ANSWER--16.5 mm
Ideal nail depth: - ANSWER--Should end at level of superior pole of patella
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Anatomic location of lesser troch indicates... - ANSWER--Degree of
rotation
Is there any significant risk to blood supply with lateral approach to
proximal femur fx fixation? - ANSWER--No
What is potential risk involving blood supply in femoral neck fx? -
ANSWER--Retinacular arteries supply femoral neck and head; fracture
at femoral neck leads to avascular necrosis of head
Garden classification for femoral neck fx: - ANSWER--Type I: incomplete,
valgus impacted
Type II: complete, undisplaced
Type III: complete, displaced, some bone intact
Type IV: displaced fracture
What percent of femoral neck fx occur in women? - ANSWER--80%
Treatment options for femoral neck fx: - ANSWER--Garden type I and II
treated with closed pinning (3 screws)
Garden type III and IV treated with THA, hemiarthroplasty, or closed
pinning depending on age/health of patient
, DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What percent of intertroch fractures occur in women? - ANSWER--70%
Classification for intertroch fractures: - ANSWER--Stable, two-part
Unstable, comminuted
Reverse obliquity
What is the start point for the troch nail? - ANSWER--Tip of greater
trochanter (due to slight angle of bone so instrumentation doesn't
have to be right on top of patients)
What is anterior bowing? - ANSWER--113 cm radius of anterior
curvature
Which two nails are biomechanically similar? - ANSWER--Short and ES
Which nail should be used for subtroch? - ANSWER--Long nail with static
locked nail
How do you fixate reverse obliquity fx? - ANSWER--Long nail, locked and
static lag screw
Which fx pattern has bimodal distribution? What % of fx are this type? -
ANSWER--Subtroch - young males, old females; 10-30% of all hip fx
Associated with bisphosphonate use for osteoporosis
, DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Pro of ES nail over short nail? - ANSWER--Crosses past ismus of shaft,
can lead to less pain and more rotational stability
Width of lag screw and anti-rotation screw? - ANSWER--10.5 mm, 5 mm
Neck angle options for all nails? - ANSWER--125 degrees and 130
degrees
Prox diameter of all nails: - ANSWER--15.9 mm
Categories of subtroch fx: - ANSWER--Simple, wedge, complex
Which fx pattern is intracapsular? Which are extracapsular? - ANSWER--
Femoral neck; Intertroch & Subtroch
What length are all short nails? - ANSWER--20 cm
What lengths do long and ES nails come in? - ANSWER--30, 33, 36, 39, 42
cm
Medial migration of lag screw solved by? - ANSWER--Locking ring on lag
screw
, DEX IOT DAY 5 TEST NEWEST 2024 ACTUAL
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Lateral protrusion backout on lag screw solved by? How much post-op
captured collapse can you get? - ANSWER--Telescoping lag screw; up to
10 mm
Loss of reduction in left hips solved by? - ANSWER--Lefty lag screw
threaded counterclockwise
Rotational instability in unstable fractures solved by? - ANSWER--Anti-
rotation screw
All nails have ___ degree of lateralization - ANSWER--5
What additional tray do you need for long or ES nail? - ANSWER--Reamer
caddy
What two positions do you want hip in for troch reduction? - ANSWER--
Traction and internal rotation
Size of starting guide pin: - ANSWER--3.2 mm
Size of starting reamer: - ANSWER--16.5 mm
Ideal nail depth: - ANSWER--Should end at level of superior pole of patella
