Shoulder Arthroplasty

Question 1

What complication is shown in this 65 yo male patient who underwent reverse total shoulder arthroplasty (rTSA)?

Answer 1

Scapular notching

Question 2

What factors help minimize the incidence of scapular notching in reverse total shoulder arthroplasty?

Answer 2

1. Increased lateral offset
2. Increased glenosphere size
3. Inferior positioning of the base plate (eccentric placement)

Question 3

What are the advantages of a stemless shoulder arthroplasty prosthesis compared to traditional stem?

Answer 3

1. Decrease in the risk of intraoperative and postoperative periprosthetic fracture
2. Decreased stress shielding
3. Use in proximal humeral malunion without need for osteotomy