Arthroplasty Final Exam Review-
Questions & Answers
Explain love at first bite Correct Ans-When broaching and you reach rotational stability, you
should not broach any further to avoid fracture the humerus
Is broaching larger than love at first bite recommended Correct Ans-No, because the implant
stem is 1.5 mm larger than the broach so if you continue to broach larger and oversize than the
medial calcar/humerus is at a higher risk of fracturing
Features of U2 and apex Correct Ans-Inclination, version, and eccentric head offset
What are the humeral head implants of the U2 and Apex composed of? Correct Ans-Cobalt
Chrome and titanium
List and describe three option for subscap takedown for exposure in shoulder
arthroplasty Correct Ans-Peel, tenotomy, lesser tuberosity osteotomy (LTO)
Peel - Pro/Con
Tenotomy - Pro/Con
LTO - Pro/Con
What 's the vaultlock glenoid and revers humeral liners made of? Correct Ans-UHMWPE
, Posterior offset humeral cup reamer post adds how much offset compared to the neutral
post? Correct Ans-2 mm
Explain scapular notching and what can be done with the univers revers Correct Ans-When
the humeral cup implant impacts the inferior scapula during adduction causing implant
loosening and scapular bone loss (notching)
135* humeral head cut, lateralize baseplate and/or glenosphere, poly and spacers
155* humeral head cut, inferiorlize baseplate and inferior offset glenosphere
Anatomic landmarks that provide the borders for exposure in shoulder arthroplasty Correct
Ans-Lateral - bicipital groove
Superior - rotator interval
Medial - conjoint tendon & caracoid
inferior - humeral circumflex vessels "three sisters"
Explain the benefits with respect to fixation seating with respect to vaultock Correct Ans-
Larger flutes, time zero fixation, snap fit, and bone grafting
What is the MGS baseplate coated with for bone ingrowth? Correct Ans-Biosync
What're the available diameter options for the MGS baseplates? Correct Ans-24mm and
28mm
Questions & Answers
Explain love at first bite Correct Ans-When broaching and you reach rotational stability, you
should not broach any further to avoid fracture the humerus
Is broaching larger than love at first bite recommended Correct Ans-No, because the implant
stem is 1.5 mm larger than the broach so if you continue to broach larger and oversize than the
medial calcar/humerus is at a higher risk of fracturing
Features of U2 and apex Correct Ans-Inclination, version, and eccentric head offset
What are the humeral head implants of the U2 and Apex composed of? Correct Ans-Cobalt
Chrome and titanium
List and describe three option for subscap takedown for exposure in shoulder
arthroplasty Correct Ans-Peel, tenotomy, lesser tuberosity osteotomy (LTO)
Peel - Pro/Con
Tenotomy - Pro/Con
LTO - Pro/Con
What 's the vaultlock glenoid and revers humeral liners made of? Correct Ans-UHMWPE
, Posterior offset humeral cup reamer post adds how much offset compared to the neutral
post? Correct Ans-2 mm
Explain scapular notching and what can be done with the univers revers Correct Ans-When
the humeral cup implant impacts the inferior scapula during adduction causing implant
loosening and scapular bone loss (notching)
135* humeral head cut, lateralize baseplate and/or glenosphere, poly and spacers
155* humeral head cut, inferiorlize baseplate and inferior offset glenosphere
Anatomic landmarks that provide the borders for exposure in shoulder arthroplasty Correct
Ans-Lateral - bicipital groove
Superior - rotator interval
Medial - conjoint tendon & caracoid
inferior - humeral circumflex vessels "three sisters"
Explain the benefits with respect to fixation seating with respect to vaultock Correct Ans-
Larger flutes, time zero fixation, snap fit, and bone grafting
What is the MGS baseplate coated with for bone ingrowth? Correct Ans-Biosync
What're the available diameter options for the MGS baseplates? Correct Ans-24mm and
28mm
