Perioperative mortality after hemiarthroplasty related to fixation method

Figures & data

Table 1. Patient demographics for hemiarthroplasty procedures

Type of component	Total		Age		% Females
		< 70	71–80	> 80
Monoblock
Cemented	3,634	169 (4.7%)	946 (26.0%)	2,519 (69.3%)	74
Uncemented	10,362	420 (4.1%)	2,550 (24.6%)	7,392 (71.3%)	74
Subtotal	13,996	589	3,496	9,911
Modular
Cemented	9,301	1,518 (16.3%)	3,233 (34.8%)	4,550 (49.6%)	74
Uncemented	2,442	446 (18.3%)	750 (30.7%)	1,246 (51.0%)	72
Subtotal	11,743	1,964	3,983	5,796
Total	25,739	2,553	7,479	15,707

Figure 1. All-cause mortality in cemented and uncemented hemiarthroplasty patients.

Table 2. Hazard ratios (HRs) for risk of death, according to kind of fixation, for all hemiarthroplasties

	HR (95% CI) (cementless vs. cemented)	p-value	No. of deaths
			Cemented	Cementless
			(n = 12,935)	(n = 12,804)
1 day	0.59 (0.43–0.79)	0.0005	109	70
1 week	1.36 (1.05–1.74)	0.02	345	384
1 month	1.27 (1.03–1.58)	0.03	860	1,170
1 year	1.37 (1.29–1.49)	< 0.001	2,680	3,794

Table 3. Hazard ratios (HRs) for day of operation to day 6 for risk of death, according to kind of fixation, for monoblock hemiarthroplasty

	Cemented			Cementless
	No. at risk at start of period	Deaths	Cumulative survival (95% CI)	No. at risk at start of period	Deaths	Cumulative survival (95% CI)	HR (95% CI) (cementless vs. cemented)
0	3,634	0	100	10,362	0	100
1	3,582	46	99.3 (99.0–99.6)	10,299	62	99.9 (99.8–99.9)	0.47 (0.32–0.68)
2	3,557	70	98.7 (98.3–99.0)	10,258	102	99.4 (99.2–99.5)	0.57 (0.35–0.95)
3	3,540	85	98.1 (97.6–98.5)	10,196	161	99.0 (98.8–99.2)	1.35 (0.76–2.37)
4	3,524	100	97.7 (97.1–98.1)	10,143	212	98.4 (98.2–98.7)	1.17 (0.66–2.07)
5	3,508	113	97.2 (96.7–97.7)	10,092	259	98.0 (97.7–98.2)	1.24 (0.67–2.29)
6	3,497	123	96.9 (96.3–97.4)	10,055	295	97.5 (97.2–97.8)	1.24 (0.61–2.49)

Figure 2. All-cause mortality for cemented and uncemented monoblock hemiarthroplasty.

Table 4. Hazard ratios (HRs) for risk of death, according to kind of fixation, for monoblock hemiarthroplasty

	HR (95% CI) (cementless vs. cemented)	p-value	No. of deaths
			Cemented	Cementless
			(n = 3,634)	(n = 10,362)
1 day	0.47 (0.32–0.68)	< 0.001	46	62
1 week	1.16 (0.81–1.66)	0.4	138	340
1 month	0.95 (0.71–1.26)	0.7	359	1,051
1 year	1.23 (1.13–1.34)	< 0.001	1,015	3,413

Figure 3. All-cause mortality in cemented and uncemented monoblock hemiarthroplasty patients stratified by age.

Table 5. Hazard ratios (HRs) for risk of death, according to kind of fixation, for modular hemiarthroplasty

	HR (95% CI) (cementless vs. cemented)	p-value	No. of deaths
			Cemented	Cementless
			(n = 9,301)	(n = 2,442)
1 day	0.48 (0.23–1.01)	0.05	63	8
1 week	1.18 (0.70–7.97)	0.5	207	44
1 month	0.91 (0.55–1.49)	0.7	501	119
1 year	0.89 (0.78–1.02)	0.09	1,665	381

Figure 4. All-cause mortality in patients with cemented and uncemented modular components.