Table 4.

Summary of complications for reverse shoulder replacements (sequential case number shown in brackets). One patient with a dislocation also sustained an ulna nerve neuropraxia that required release, requiring two reoperations.

Complication	Number	Reoperation	Timing	Outcome
Dislocation (23, 50, 54, 55, 69)	5	5	< 6 weeks	Open reduction (n = 3), closed reduction (n = 1), revision to megahead (n = 1)
Fracture (28, 53, 73, 92)	4	0	Intraoperative	Glenoid # noted on insertion of base plate, no adverse effect (n = 2), humeral calcar crack noted on insertion of stem, cerclage wired, no adverse effect (n = 2)
Ulna nerve neuropathy (23, 59, 78)	3	1	< 6 weeks	Transient neuropraxia with full recovery (n = 2), ulna nerve release at elbow, with subsequent full recovery (n = 1)
Wound infection (24, 66)	2	2	< 6 weeks	Deep (n = 1), superficial (n = 1), washout with no recurrence (n = 2)
Dissociation of glenosphere (3)	1	1	< 6 weeks	Complete recovery after revision of baseplate and glenosphere
Haematoma (25)	1	1	< 6 weeks	Washout on day of surgery, no adverse effect
Acromial fracture (97)	1	1	6–12 weeks	Open reduction internal fixation
Axillary vein injury (18)	1	0	Intraoperative	No adverse effect
Total	18	11