JR 201 Exam Prep Questions and Correct
Answers Updated
Question 1
the Trident II lateral decubitus alignment guide has a pre-set abduction angle of 45
degrees. The operating surgeon can adjust the position of the instrument based on
the anatomy of the patient
Correct Answer
true
Question 2
based on the images provided for a right knee: to position the "EPI" holes to be
parallel to the transepicondylar axis, the faceplate of the A/P sizing guide should be
(in a knee with minimal bone erosion) rotated externally (laterally)
Correct Answer
true
Page 1 of 76
,Question 3
the universal resection guide and the femoral adjustment block shown in the
provided image are from the Triathlon Standard instrument set
Correct Answer
true
Question 4
centering the drill guide in the cup hole will prevent the drill hole from being
prepared off center to the cup hole. if a screw is driven into an off centered drill hole,
the head of the screw might not completely seat when it is driven into the acetabular
cup. if the head of the screw is not fully seated, the cup insert will not engage the
Innerchange locking mechanism
Correct Answer
true
Question 5
if a V40 Biolox delta Ceramic Femoral Head has been removed from a V40 femoral
stem trunnion, a protective sleeve must be attached to the stem trunnion before a
new Biolox delta C-Taper Femoral Head, or Biolox delta Ceramic Universal Femoral
Head can be impacted onto the same trunnion. trunnion protection protocol must be
followed even if an event takes place during a primary surgery where an impacted
ceramic head has removed from a stem trunnion. WARNING: protective trunnion
sleeves are only approved for use with ceramic femoral heads. they are never to be
used with CoCr femoral head implants
Correct Answer
true
Page 2 of 76
,Question 6
the area marked in red is the posterior superior rim of a left acetabulum. in a normal
hip it is where the acetabular labrum is thickest to prevent the femoral head from
dislocating posteriorly
Correct Answer
true
Question 7
if the operating surgeon wants to attach a trial femoral implant to a positioning
instrument, he/she can use either the Triathlon Standard femoral impactor/extractor
or the Triathlon MIS trial femoral extractor. in the image provided, the instrument
marked "A" is the Triathlon Standard femoral impactor. "B" is the MIS trial instrument
Correct Answer
true
Page 3 of 76
, Question 8
MDM trial liner is a metal liner used in conjunction with a monopolar insert trial and
sleeve. take note that when the trial implants are assembled, Alpha Codes C&D will
utilize the purple femoral head trials, having a 22mm inner diameter. Alpha Codes E
through J will utilize the grey femoral head trials, having a 28mm inner diameter.
Correct Answer
true
Question 9
unlike the Triathlon Standard A/P sizer stylus which is only used to determine the
runout of a femoral implant on the anterior femoral surface (a bladerunner is used
independently to measure the A/P dimension), the Triathlon MIS stylus is used to not
only determine the runout, but also to measure the A/P dimension of a femoral
implant
Correct Answer
true
Question 10
based on the image provided; to resect the posterior femoral condyles of a normal
flexed femur (with minimal bone erosion) so that their resulting cut surfaces are
parallel to the transepicondylar axis (red line), the operating surgeon will have to take
more bone from the posterior medial femoral condyle than the posterior lateral
femoral condyle (green line)
Correct Answer
true
Page 4 of 76
Answers Updated
Question 1
the Trident II lateral decubitus alignment guide has a pre-set abduction angle of 45
degrees. The operating surgeon can adjust the position of the instrument based on
the anatomy of the patient
Correct Answer
true
Question 2
based on the images provided for a right knee: to position the "EPI" holes to be
parallel to the transepicondylar axis, the faceplate of the A/P sizing guide should be
(in a knee with minimal bone erosion) rotated externally (laterally)
Correct Answer
true
Page 1 of 76
,Question 3
the universal resection guide and the femoral adjustment block shown in the
provided image are from the Triathlon Standard instrument set
Correct Answer
true
Question 4
centering the drill guide in the cup hole will prevent the drill hole from being
prepared off center to the cup hole. if a screw is driven into an off centered drill hole,
the head of the screw might not completely seat when it is driven into the acetabular
cup. if the head of the screw is not fully seated, the cup insert will not engage the
Innerchange locking mechanism
Correct Answer
true
Question 5
if a V40 Biolox delta Ceramic Femoral Head has been removed from a V40 femoral
stem trunnion, a protective sleeve must be attached to the stem trunnion before a
new Biolox delta C-Taper Femoral Head, or Biolox delta Ceramic Universal Femoral
Head can be impacted onto the same trunnion. trunnion protection protocol must be
followed even if an event takes place during a primary surgery where an impacted
ceramic head has removed from a stem trunnion. WARNING: protective trunnion
sleeves are only approved for use with ceramic femoral heads. they are never to be
used with CoCr femoral head implants
Correct Answer
true
Page 2 of 76
,Question 6
the area marked in red is the posterior superior rim of a left acetabulum. in a normal
hip it is where the acetabular labrum is thickest to prevent the femoral head from
dislocating posteriorly
Correct Answer
true
Question 7
if the operating surgeon wants to attach a trial femoral implant to a positioning
instrument, he/she can use either the Triathlon Standard femoral impactor/extractor
or the Triathlon MIS trial femoral extractor. in the image provided, the instrument
marked "A" is the Triathlon Standard femoral impactor. "B" is the MIS trial instrument
Correct Answer
true
Page 3 of 76
, Question 8
MDM trial liner is a metal liner used in conjunction with a monopolar insert trial and
sleeve. take note that when the trial implants are assembled, Alpha Codes C&D will
utilize the purple femoral head trials, having a 22mm inner diameter. Alpha Codes E
through J will utilize the grey femoral head trials, having a 28mm inner diameter.
Correct Answer
true
Question 9
unlike the Triathlon Standard A/P sizer stylus which is only used to determine the
runout of a femoral implant on the anterior femoral surface (a bladerunner is used
independently to measure the A/P dimension), the Triathlon MIS stylus is used to not
only determine the runout, but also to measure the A/P dimension of a femoral
implant
Correct Answer
true
Question 10
based on the image provided; to resect the posterior femoral condyles of a normal
flexed femur (with minimal bone erosion) so that their resulting cut surfaces are
parallel to the transepicondylar axis (red line), the operating surgeon will have to take
more bone from the posterior medial femoral condyle than the posterior lateral
femoral condyle (green line)
Correct Answer
true
Page 4 of 76
