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Demographics

Patient characteristics by diagnosis

Hip » Total hip arthroplasty » Demographics » Patient characteristics by diagnosis

TABLE Patient characteristics of all patients with a registered primary total hip arthroplasty by diagnosis in the Netherlands in 2022

	Osteoarthritis	Fracture	Osteonecrosis	Late post-traumatic	Dysplasia	Rheumatoid arthritis	Post-Perthes disease	Tumour	Total
N (%)	31,602 (86.1)	2,115 (5.8)	902 (2.5)	845 (2.3)	533 (1.5)	140 (0.4)	82 (0.2)	78 (0.2)	36,707
Mean age (years) (SD)	70.0 (9.8)	70.3 (8.7)	62.5 (16.0)	67.4 (12.3)	51.6 (14.7)	62.8 (14.7)	50.0 (17.1)	63.3 (12.8)	69.4 (10.5)
Age (years) (%)
<50	2	1	19	8	45	17	44	14	4
50-59	13	8	19	16	27	21	22	16	13
60-69	29	34	23	29	14	29	21	41	29
70-79	40	45	25	32	11	21	13	23	39
≥80	16	12	14	15	2	12	0	6	15
Gender (%)
Men	36	36	47	46	28	25	66	44	36
Women	64	64	53	54	72	75	34	56	64
ASA score (%)
I	14	12	9	13	30	1	28	3	14
II	62	54	52	50	59	71	66	27	60
III-IV	24	34	39	37	11	28	6	70	26
Type of hospital (%)
General	79	96	82	88	73	86	73	67	80
UMC	1	4	9	6	10	7	6	32	2
Private	20	0	9	6	17	6	21	1	18
Charnley-score (%)
A One hip joint affected	40	59	57	75	52	29	73	75	42
B1 Both hip joints affected	32	16	20	9	26	24	15	21	31
B2 Contralateral hip joint with a total hip prosthesis	25	18	18	10	19	20	12	0	24
C Multiple joints affected or chronic disease that affects quality of life	3	7	5	6	3	27	0	4	3
Mean Body Mass Index (kg/m²) (SD)	27.4 (4.5)	24.9 (4.1)	26.7 (5.2)	25.8 (4.5)	26.2 (4.9)	26.9 (4.5)	27.6 (4.4)	26.6 (4.5)	27.2 (4.6)
Body Mass Index (kg/m²) (%)
Underweight (≤18,5)	1	4	4	4	2	3	0	1	1
Normal weight (>18,5-25)	33	54	38	43	45	31	34	40	35
Overweight (>25-30)	42	32	34	38	34	47	41	37	41
Obesity (>30-40)	23	10	23	14	18	18	25	21	22
Morbid obesity (>40)	1	0	1	1	1	1	0	1	1
Smoking (%)
No	91	85	81	84	87	91	73	91	90
Yes	9	15	19	16	13	9	27	9	10

Please note: in 2022, 249 (0.7%) patients received a primary THA after a diagnosis that is not listed in the table. Of 143 (0.4%) primary THAs the diagnosis was not registered.
General: general hospital; UMC: university medical centre; Private: private hospital; SD: standard deviation; THA: total hip arthroplasty.