Table 2.

Complications within 90 days

	n (% [95% CI])
Any reoperation*	4239 (0·606% [0·588–0·624])
Serious complication†	2218 (0·317% [0·304–0·330])
Infection‡	944 (0·135% [0·126–0·144])
Lower-respiratory-tract infection	931 (0·133% [0·125–0·142])
Urinary tract infection	647 (0·092% [0·085–0·100])
Pulmonary embolism	546 (0·078% [0·072–0·085])
Myocardial infarction	279 (0·040% [0·035–0·045])
Mortality	217 (0·031% [0·027–0·035])
Stroke	208 (0·030% [0·026–0·034])
Acute kidney injury	206 (0·029% [0·026–0·034])
Neurovascular injury	67 (0·010% [0·007–0·012])
Fasciotomy	33 (0·005% [0·003–0·007])
Fatal pulmonary embolism	10 (0·001% [0·000–0·003])

N=699 965.

^*Any procedure done in the same knee (eg, washout, meniscal repair, repeat meniscectomy, chondroplasty, ligamentous surgery, fasciotomy).

^†At least one serious complication within 90 days, defined as either pulmonary embolism, myocardial infarction, stroke, infection requiring surgery, fasciotomy, neurovascular injury, or death.

^‡Infection requiring surgery (open or arthroscopic washout).