Patient-reported history of leg ulceration 12–16 years after total primary knee or hip replacement

Figures & data

Table 1. Numbers of participants in each group, according to age

Age (years)
Group	females	30–39	40–49	50–59	60–69	70–79	80–89	90–100	Total
Control group	56%	14 (1.4%)	17 (1.8%)	123 (13%)	194 (20%)	361 (37%)	211 (22%)	47 (4.9%)	967
THR patients	62%	4 (0.9%)	8 (1.8%)	17 (3.9%)	81 (18%)	150 (34%)	150 (34%)	31 (7.0%)	441
TKR patients	65%	2 (1.0%)	0 (0.0%)	5 (2.6%)	13 (6.6%)	68 (35%)	88 (45%)	20 (10%)	196

Table 2. Lifetime prevalence of ulceration (adjusted for age and sex)

	Prevalence	95% CI
Control participants	7.4%	5.9–9.2
THR patients	5.9%	4.0–8.6
TKR patients	9.3%	6.0–14

Table 3. Prevalence of ulceration postoperatively (patients) or in the previous 15 years

	Prevalence	95% CI
Control participants	5.7%	4.4–7.4
THR patients	4.7%	3.1–7.4
TKR patients	7.8%	4.8–12

Table 4. Logistic regression analysis

	Odds ratio	95% CI	p-value
THR	1.2	0.7–1.9	0.5
TKR	0.8	0.4–1.4	0.4
Sex	0.7	0.5–1.1	0.1
Age	1.0	1.0–1.1	< 0.001