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
				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	0.0a	–	36,274	0.9	0.7	–
Duchman	2005–2011	Retrospective	30 days	1588	0.5a	0.13	–	27,745	1.5	0.47	–
Hansen	2002–2012	Retrospective	90 days	20,488	2.04a	1.56a	–	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