Table 4.

Comparison of systemic complications for robotic and nonrobotic TKA groups.

Systemic complication	Non–robot-assisted primary TKA (n = 750,122) n (%)	Robot-assisted primary TKA (n = 5228) n (%)	OR (95% CI)
Deep vein thrombosis
In-hospital	5345 (0.71)	15 (0.29)	2.40 (1.50-4.18)
90 d	23,274 (3.10)	101 (1.93)	1.55 (1.28-1.90)a
Altered mental status
In-hospital	3111 (0.41)	8 (0.15)	2.40 (1.29-5.26)a
90 d	6298 (0.84)	27 (0.52)	1.44 (1.01-2.16)a
Pulmonary embolism
In-hospital	4026 (0.54)	7 (0.13)	3.76 (1.94-8.76)a
90 d	9203 (1.23)	28 (0.54)	2.16 (1.52-3.21)a
Anemia
In-hospital	179,851 (23.98)	613 (11.73)	2.26 (2.08-2.46)a
90 d	49,227 (6.56)	135 (2.58)	2.50 (2.12-2.98)
Acute renal failure
In-hospital	15,987 (2.13)	38 (0.73)	2.56 (1.89-3.60)a
90 d	13,049 (1.74)	46 (0.88)	1.71 (1.29-2.32)a
Myocardial infarction
In-hospital	1620 (0.22)	5 (0.10)	1.95 (0.90-5.45)
90 d	3104 (0.41)	14 (0.27)	1.38 (0.85-2.46)
Cerebrovascular event
In-hospital	5310 (0.71)	18 (0.34)	1.80 (1.17-2.98)a
90 d	10,827 (1.44)	64 (1.22)	1.03 (0.81-1.33)
Pneumonia
In-hospital	4086 (0.54)	7 (0.13)	3.64 (1.88-8.49)a
90 d	9261 (1.23)	46 (0.88)	1.25 (0.94-1.69)
Respiratory failure
In-hospital	6914 (0.92)	15 (0.29)	2.70 (1.69-4.70)a
90 d	6022 (0.80)	19 (0.36)	1.89 (1.24-3.07)a
Urinary tract infection
In-hospital	13,477 (1.80)	43 (0.82)	1.85 (1.39-2.54)a
90 d	34,869 (4.65)	143 (2.74)	1.47 (1.25-1.75)a

NA, not applicable.

^aBolded entries refer to complications that are statistically significant.