Unicompartmental knee arthroplasty and revision total knee arthroplasty have a lower risk of venous thromboembolism disease at 30 days than primary total knee arthroplasty

Table 3 Recent studies on comparative VTED risk between UKA and primary TKA

Study	Year(s)	Design	Follow-up	Unicompartmental knee arthroplasty				Primary total knee arthroplasty
Study	Year(s)	Design	Follow-up	N	DVT%^b	PE%^c	VTED%^d	N	DVT%	PE%	VTED%
Brown	2004–2009	Retrospective	90 days	605	–	–	0.6	2235	–	–	1.0
Drager	2011–2012	Retrospective	30 days	1340	0.5	0.0^a	–	36,274	0.9	0.7	–
Duchman	2005–2011	Retrospective	30 days	1588	0.5^a	0.13	–	27,745	1.5	0.47	–
Hansen	2002–2012	Retrospective	90 days	20,488	2.04^a	1.56^a	–	415,727	3.70	3.01	–

DVT deep vein thrombosis, PE pulmonary embolus, TKA total knee arthroplasty, UKA unicompartmental knee arthroplasty, VTED venous thromboembolism disease
^aIndicates significant difference compared to corresponding TKA value, P < 0.05
^bDeep vein thrombosis percentage
^cPulmonary embolism percentage
^dVenous thromboembolic disease percentage

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