More than 95% completeness of reported procedures in the population-based Dutch Arthroplasty Register

Figures & data

Definitions

Completeness based on Vektis data = Number of registered procedures in the LROI / Number of reimbursed procedures based on data from Vektis

Completeness based on HIS data = Number of registered procedures in the LROI / Number of performed procedures in the HIS of all hospitals in the Netherlands

Coverage = Number of participating hospitals / Number of hospitals performing hip and or knee arthroplasty surgeries based on data from Vektis

Table 1. Number of data entry records (i.e. hip and knee registrations) in the LROI

Year	Hip arthroplasty			Knee arthroplasty
	Primary THA	Hemiarthro-plasties	Revision hip	Primary TKA	Primary unicondylar	Primary other^a	Revision knee
2007 ^b	8,579	921	1,267	6,688	678	358	594
2008 ^b	14,516	1,379	1,813	10,942	1,115	420	878
2009 ^b	21,007	2,056	2,675	16,020	1,524	611	1,296
2010	22,932	2,328	2,940	17,872	1,697	669	1,617
2011	23,510	2,376	3,192	18,907	1,598	568	1,790
2012	24,889	2,748	3,708	21,009	1,586	556	2,058
2013	25,642	2,932	3,454	21,654	1,804	302	2,215
Total	141,075	14,740	19,049	113,092	10,002	3,484	10,448

THA: Total hip arthroplasty; TKA: Total knee arthroplasty

^a Primary other included patellofemoral, other, and unknown primary knee arthroplasties

^b 2007–2009: run-in phase of the LROI

Figure 1. Number of primary total hip arthroplasties (THA) and revision hip arthroplasties (left panel) and number of primary knee arthroplasties and revision knee arthroplasties (right panel) in 2007–2013 registered in the LROI. The period 2007–2009 was the run-in phase of the LROI and therefore the registration is known to be incomplete for those years.

Figure 2. Number of procedures performed and registered in the LROI per hospital for primary total hip arthroplasty (THA), hip revision arthroplasty, primary knee arthroplasty, and knee revision arthroplasty. * No data available from the hospital information system for comparison. Only hospitals which performed primary, revision, hip or knee arthroplasty are shown.