Impact of introducing custom-made articulating spacers: A retrospective cohort study on two protocols for two-stage hip revision

Table 4 Complications, n (%)

Variables	Group A	Group B	P value
During interval	n = 39	n = 59
Any complication	20 (51)	31 (53)	1.00
Anemia	13 (33)	21 (36)	1.00
AKI	4 (10)	4 (7)	0.71
Delirium	3 (8)	1 (2)	0.30
Decubitus	1 (3)	3 (5)	1.00
Pneumonia	1 (3)	0 (0)	0.40
PJI related death	2 (5)	0 (0)	0.16
Cup loosening	0 (0)	1 (2)	1.00
Spacer dislocation	0 (0)	1 (2)	1.00
After second-stage surgery1	n = 35	n = 58
Any complication	17 (49)	34 (59)	0.39
Anemia	9 (26)	17 (29)	0.81
AKI	1 (3)	5 (9)	0.40
Delirium	1 (3)	1 (2)	1.00
Decubitus	0 (0)	0 (0)
Pneumonia	1 (3)	1 (2)	1.00
PJI related death	3 (9)	0 (0)	0.05
Dislocation	3 (8)	6 (10)	1.00
Mean dislocations per patient (SD)	3.0 (1.0)	2.6 (1.6)	0.67
Aseptic loosening	0 (0)	2 (3)	0.53

¹Until the end of follow-up.

AKI: Acute kidney injury; PJI: Prosthetic joint infection.