Table 2.

Yearly cumulative percent revision of primary shoulder replacement by age and type of primary (all diagnoses).

Age	Type of primary	N revised	N total	Obs. years	Revisions/100 obs. years (95% CI)
<55	Hemi resurfacing	44	347	1901	2.31 (1.68, 3.11)
	Hemi stemmed	70	525	2550	2.75 (2.14, 3.47)
	Total stemmed	88	708	3448	2.55 (2.05, 3.14)
	Total reverse	24	356	1077	2.23 (1.43, 3.32)
55–64	Hemi resurfacing	72	433	2624	2.74 (2.15, 3.46)
	Hemi stemmed	123	974	5458	2.25 (1.87, 2.69)
	Total stemmed	297	3059	15,375	1.93 (1.72, 2.16)
	Total reverse	130	2340	7019	1.85 (1.55, 2.20)