Shoulder Arthroplasty
A 72-year-old woman presents with painful pseudoparalysis of the right shoulder. She has difficulty lifting her arm above shoulder height and has a positive external rotation lag sign. Radiographs demonstrate superior migration of the humeral head with acetabularization of the acromion (Hamada Grade 4B). She has an intact deltoid muscle. Regarding reverse total shoulder arthroplasty:
Mark each as TRUE or FALSE
The Grammont principle involves medializing the center of rotation to the glenoid surface and distal...
An intact deltoid muscle and functional axillary nerve are absolute requirements for RTSA; the proce...
Scapular notching is a rare complication occurring in less than 10% of cases; external rotation is t...
Scapular notching is the most common complication (up to 96% in early series) caused by impingement ...
Active external rotation is often limited postoperatively because the posterior rotator cuff (infras...
Answer the questions to see explanations
Click T (True) or F (False) for each option