ARTHROPLASTY IOT (ARTHREX) EXAM
QUESTIONS WITH CORRECT VERIFIED DETAILED
ANSWERS 2025/2026
INTRODUCTION:
This document contains the complete set of Arthroplasty IOT
(Arthrex) exam questions for 2025, with verified detailed answers. It
covers topics such as implant materials, surgical approaches, glenoid
and humeral component options, fixation techniques, and
classifications (e.g., Walch). Additionally, it includes IoT-related
applications in arthroplasty, such as smart implants, real-time
monitoring, and data analytics for personalized treatment. This
resource provides a thorough preparation tool for exams and
professional training in orthopedic arthroplasty.
EXAM QUESTIONS AND ANSWERS:
What are the humeral head implants in the Univers II/Apex systems
composed of? --- correct answers ---cobalt chrome or titanium on
request
,List/describe 3 options for subscapularis take down during
exposure for TSA/rTSA. --- correct answers ---LTO, subscap peel
off, tenotomy
What are the Univers II/Apex glenoid and the Univers II Revers
Humeral cup composed of? --- correct answers ---UHMWPE
The posterior offset humeral cup reamer in the Univers Revers
instrument set adds how much offset compared to the neutral
humeral cup reaming pin? --- correct answers ---2mm or 2mm
anterior
Explain scapular notching and what can be done with the Univers
Revers 135 and 155 choices to minimize it. --- correct answers ---
Scapular notching occurs when the humeral head repeatedly
collides with the inferior portion of the glenoibony osteolysis and
poly breakdown.
135 = Lateralizes the implant
155 = eccentric heads
What anatomic landmarks provide the boarders for the exposure
field in a TSA? --- correct answers ---Inferior = 3 sisters
Superior = rotator interval
Medial = conjoin tendons
,Lateral = long bead of biceps
Explain the benefits (with respect to fixation and seating) and
advantages of the VaultLock Glenoid Component. How do the
changes improve glenoid preparation? --- correct answers ---The
VaultLock implant features a combination of 2 pegs and 1 keel. The
pegs are fluted, allowing for bony in-growth, while the inferior keel
provides increased stability to the construct. All together, the pegs
and keel contribute to t=0 stability.
The VaultLock implant also has a varying radius of curvature that is
proportionate to the size of the implant.
Allows for bone grafting.
What is the MGS baseplate coated in to promote bone in-growth? ---
correct answers ---BioSync
Explain glenohumeral mismatch and the ideal amount as suggested
by Dr. Walch. --- correct answers ---5.5-7mm
What are the 4 components of a 4-part humeral fracture? ---
correct answers ---Greater tuberosity, lesser tuberosity, humeral
head, humeral shaft.
Walch classification question. --- correct answers ---A = humeral
head remains centered on the glenoid.
, B = Humeral head is subluxed from the glenoid.
C = Total humeral head/glenoid dysfunction.
Describe "superior escape," and the associated muscle/tendon. ---
correct answers ---Superior escape occurs in conjunction with
supraspinatus dysfunction. Without the inferior force coupling from
the dysfunctional supra, the humerus drifts upwards raising
concern for articulation with the AC joint.
Describe the lateral offset options built into the MGS glenoid
baseplate. --- correct answers ---neutral, +2, +4
List a pro and a con of using the Universal Convertible Baseplate in
an anatomic TSA. --- correct answers ---Pro = The convertible
baseplate can save time and money given its ability to be converted
from an aTSA to rTSA. The fixation of the convertible BP is also
much greater than that of the standard VaultLock.
Con = the Convertible baseplate is much thicker than VaultLock.
This raises a concern for "over-stuffing" the joint, which could
contribute to pre-mature rotator cuff failure.
Know the 4 rotator cuff tendons --- correct answers ---supra, infra,
subs cap, teres minor
Avg neck shaft --- correct answers ---132.5
QUESTIONS WITH CORRECT VERIFIED DETAILED
ANSWERS 2025/2026
INTRODUCTION:
This document contains the complete set of Arthroplasty IOT
(Arthrex) exam questions for 2025, with verified detailed answers. It
covers topics such as implant materials, surgical approaches, glenoid
and humeral component options, fixation techniques, and
classifications (e.g., Walch). Additionally, it includes IoT-related
applications in arthroplasty, such as smart implants, real-time
monitoring, and data analytics for personalized treatment. This
resource provides a thorough preparation tool for exams and
professional training in orthopedic arthroplasty.
EXAM QUESTIONS AND ANSWERS:
What are the humeral head implants in the Univers II/Apex systems
composed of? --- correct answers ---cobalt chrome or titanium on
request
,List/describe 3 options for subscapularis take down during
exposure for TSA/rTSA. --- correct answers ---LTO, subscap peel
off, tenotomy
What are the Univers II/Apex glenoid and the Univers II Revers
Humeral cup composed of? --- correct answers ---UHMWPE
The posterior offset humeral cup reamer in the Univers Revers
instrument set adds how much offset compared to the neutral
humeral cup reaming pin? --- correct answers ---2mm or 2mm
anterior
Explain scapular notching and what can be done with the Univers
Revers 135 and 155 choices to minimize it. --- correct answers ---
Scapular notching occurs when the humeral head repeatedly
collides with the inferior portion of the glenoibony osteolysis and
poly breakdown.
135 = Lateralizes the implant
155 = eccentric heads
What anatomic landmarks provide the boarders for the exposure
field in a TSA? --- correct answers ---Inferior = 3 sisters
Superior = rotator interval
Medial = conjoin tendons
,Lateral = long bead of biceps
Explain the benefits (with respect to fixation and seating) and
advantages of the VaultLock Glenoid Component. How do the
changes improve glenoid preparation? --- correct answers ---The
VaultLock implant features a combination of 2 pegs and 1 keel. The
pegs are fluted, allowing for bony in-growth, while the inferior keel
provides increased stability to the construct. All together, the pegs
and keel contribute to t=0 stability.
The VaultLock implant also has a varying radius of curvature that is
proportionate to the size of the implant.
Allows for bone grafting.
What is the MGS baseplate coated in to promote bone in-growth? ---
correct answers ---BioSync
Explain glenohumeral mismatch and the ideal amount as suggested
by Dr. Walch. --- correct answers ---5.5-7mm
What are the 4 components of a 4-part humeral fracture? ---
correct answers ---Greater tuberosity, lesser tuberosity, humeral
head, humeral shaft.
Walch classification question. --- correct answers ---A = humeral
head remains centered on the glenoid.
, B = Humeral head is subluxed from the glenoid.
C = Total humeral head/glenoid dysfunction.
Describe "superior escape," and the associated muscle/tendon. ---
correct answers ---Superior escape occurs in conjunction with
supraspinatus dysfunction. Without the inferior force coupling from
the dysfunctional supra, the humerus drifts upwards raising
concern for articulation with the AC joint.
Describe the lateral offset options built into the MGS glenoid
baseplate. --- correct answers ---neutral, +2, +4
List a pro and a con of using the Universal Convertible Baseplate in
an anatomic TSA. --- correct answers ---Pro = The convertible
baseplate can save time and money given its ability to be converted
from an aTSA to rTSA. The fixation of the convertible BP is also
much greater than that of the standard VaultLock.
Con = the Convertible baseplate is much thicker than VaultLock.
This raises a concern for "over-stuffing" the joint, which could
contribute to pre-mature rotator cuff failure.
Know the 4 rotator cuff tendons --- correct answers ---supra, infra,
subs cap, teres minor
Avg neck shaft --- correct answers ---132.5
