ARTHREX SPORTS IOT SHOULDER
COMPLETE QUESTIONS AND VERIFIED
ANSWERS COMPREHENSIVE STUDY GUIDE
●● What are the functions and insertions of each rotator cuff muscle?
Answer: a. Subscapularis: shoulder internal rotation, stabilize shoulder
joint: origin sub scapular fossa and insertion point on lesser tuberosity of
humerus
b. Infraspinatus: shoulder external rotation (while in neutral position),
stabilize shoulder joint; origin infraspinatous fossa and insertion and
insertion point middle facet of greater tuberosity of humerus
c. Supraspinatus: initiation of abduction; origin supraspinatous fossa of
scapula and insertion point superior facet of greater tuberosity of
humerus
d. Teres minor: Shoulder external rotation (while in 90 degrees of
ABduction), stabilizes shoulder joint; origin lateral border of the scapula
and insertion inferior facet of greater tuberosity of humerus
●● What is the attachement site on the humerus for the subscapularis?
Answer: Lesser tuberosity of the humerus
●● What's is the largest rotator cuff muscle?
Answer: Subscapularis (53% of force balancing the other three, creating
concavity compression)
,●● Viewing in a posterior portal in the right shoulder, what structure
would be on your left?
Answer: Glenoid
●● Pertaining to the glenohumeral joint, what does ALPSA stand for?
Answer: Anterior labrum periosteal sleeve avulsion. It refers to a
detachment of the anterioinferior labrum from the glenoid. The scapular
periosteum, is enraptured but widely lifted or stripped. The labrum
remains attached to the periosteum and can rotate medially to a position
along the anterior surface of the scapular neck.
●● What type of shoulder dislocation occurs with seizure or electric
shock?
Answer: Posterior dislocation. (Uncommon)
●● Should a SwiveLock be counter sunk in order to achieve maximum
fixation?
Answer: No (should not be proud)
●● How fare are CC ligaments away from distal clavicule?
Answer: a. Trapezoid: 2.5 cm medial from AC joint
b. Conoid ligament: 4.5-5cm from AC joint
, ●● When do you use the AC Dog bone Technique? Acute, chronic or
both?
Answer: Both.
a. Acute high-grade AC joint injuries (Rockwood types III-V)
b. Chronic AC joint instability
When conservative management fails.
Often combined with allograft augmentation (e.g., with hamstring
tendon) for biological reconstruction.
●● Should the laser orientation line on the ac dog bone button sit
parallel or perpendicular to the arch of the coracoid?
Answer: Parallel. The button is 8mmx10mm, larger portion across the
coracoid. Helps disperse the force.
●● When you transfer a part of the coracoid to the glenoid, what is the
procedure called?
Answer: Latarjet
●● Name 3 features of the Arthrex clavicle fracture repair system.
Answer: 1. The plates are precontoured and anatomically
designed to limit the need for bending, helping to ensure an optimal
match with the patient's superior clavicle.
2. Achieve secondary fixation to the coracoid using the Knotless Distal
Clavicle Plate Button TightRope® implant.
COMPLETE QUESTIONS AND VERIFIED
ANSWERS COMPREHENSIVE STUDY GUIDE
●● What are the functions and insertions of each rotator cuff muscle?
Answer: a. Subscapularis: shoulder internal rotation, stabilize shoulder
joint: origin sub scapular fossa and insertion point on lesser tuberosity of
humerus
b. Infraspinatus: shoulder external rotation (while in neutral position),
stabilize shoulder joint; origin infraspinatous fossa and insertion and
insertion point middle facet of greater tuberosity of humerus
c. Supraspinatus: initiation of abduction; origin supraspinatous fossa of
scapula and insertion point superior facet of greater tuberosity of
humerus
d. Teres minor: Shoulder external rotation (while in 90 degrees of
ABduction), stabilizes shoulder joint; origin lateral border of the scapula
and insertion inferior facet of greater tuberosity of humerus
●● What is the attachement site on the humerus for the subscapularis?
Answer: Lesser tuberosity of the humerus
●● What's is the largest rotator cuff muscle?
Answer: Subscapularis (53% of force balancing the other three, creating
concavity compression)
,●● Viewing in a posterior portal in the right shoulder, what structure
would be on your left?
Answer: Glenoid
●● Pertaining to the glenohumeral joint, what does ALPSA stand for?
Answer: Anterior labrum periosteal sleeve avulsion. It refers to a
detachment of the anterioinferior labrum from the glenoid. The scapular
periosteum, is enraptured but widely lifted or stripped. The labrum
remains attached to the periosteum and can rotate medially to a position
along the anterior surface of the scapular neck.
●● What type of shoulder dislocation occurs with seizure or electric
shock?
Answer: Posterior dislocation. (Uncommon)
●● Should a SwiveLock be counter sunk in order to achieve maximum
fixation?
Answer: No (should not be proud)
●● How fare are CC ligaments away from distal clavicule?
Answer: a. Trapezoid: 2.5 cm medial from AC joint
b. Conoid ligament: 4.5-5cm from AC joint
, ●● When do you use the AC Dog bone Technique? Acute, chronic or
both?
Answer: Both.
a. Acute high-grade AC joint injuries (Rockwood types III-V)
b. Chronic AC joint instability
When conservative management fails.
Often combined with allograft augmentation (e.g., with hamstring
tendon) for biological reconstruction.
●● Should the laser orientation line on the ac dog bone button sit
parallel or perpendicular to the arch of the coracoid?
Answer: Parallel. The button is 8mmx10mm, larger portion across the
coracoid. Helps disperse the force.
●● When you transfer a part of the coracoid to the glenoid, what is the
procedure called?
Answer: Latarjet
●● Name 3 features of the Arthrex clavicle fracture repair system.
Answer: 1. The plates are precontoured and anatomically
designed to limit the need for bending, helping to ensure an optimal
match with the patient's superior clavicle.
2. Achieve secondary fixation to the coracoid using the Knotless Distal
Clavicle Plate Button TightRope® implant.
