Increased use of total shoulder arthroplasty for osteoarthritis and improved patient-reported outcome in Denmark, 2006–2015: a nationwide cohort study from the Danish Shoulder Arthroplasty Registry

Figures & data

Table 1. Anatomical total shoulder arthroplasty (TSA), resurfacing hemiarthroplasty (RHA), stemmed hemiarthroplasty (SHA), and reverse shoulder arthroplasty (RSA), number (%)

	TSA	RHA	SHA	RSA
Sex
Women	543 (32)	691 (41)	297 (18)	156 (9)
Men	271 (25)	567 (52)	203 (18)	57 (5)
Age
≥≥ 75	175 (29)	194 (32)	132 (22)	102 (17)
56–74	590 (33)	811 (45)	306 (17)	107 (6)
≤≤ 55	50 (14)	253 (69)	62 (17)	4 (1)

The table does not include arthroplasties that were recorded as others (n = 68) or with a missing arthroplasty type (n = 13).

Figure 1. Annual number of shoulder arthroplasties for osteoarthritis from 2006 to 2015.

Figure 2. The proportion of stemmed hemiarthroplasty (blue), resurfacing hemiarthroplasty (green), anatomical total shoulder arthroplasty (purple), and reverse shoulder arthroplasty (grey) from 2006 to 2015.

Figure 3. Proportion of patients who were 55 years or younger (dark green), between 56 and 74 years (light green), and 75 years or older (grey) from 2006 to 2015.

Table 2. Linear regression model with difference, 95% confidence interval (CI), and with WOOS at 1 year as the dependent variable

Factor	Univariate model (95% CI)	Multivariable model (95% CI)
Year of operation (change per year)	1.8 (1.2 to 2.2)	1.0 (0.5 to 1.5)
Arthroplasty type ^a
TSA	Reference	Reference
RHA	–12 (–9.4 to –15)	–6.6 (–3.5 to –9.8)
SHA	–14 (–10 to –17)	–11 (–7.8 to –15)
RSA	–7.2 (–2.5 to –12)	–7.0 (–2.4 to –12)
Sex
Women	Reference	Reference
Men	2.4 (0.1–4.8)	5.6 (3.3 to 8.0)
Age
≥≥ 75	Reference	Reference
56–74	1.1 (–1.7 to 3.9)	0.6 (–3.5 to 2.2)
≤≤ 55	–16 (–12 to –20)	–18 (–13 to –23)

^a For abbreviations, see Table 1