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Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Acta+Orthop 2016 ; 87 (3): 209-17 Nephropedia Template TP
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Patient injuries in primary total hip replacement: Nationwide analysis in Finland #MMPMID26808350
Helkamaa T; Hirvensalo E; Huhtala H; Remes V
Acta Orthop 2016[Jun]; 87 (3): 209-17 PMID26808350show ga
Background and purpose: Although the results of primary total hip replacements (THRs) are generally excellent, sometimes serious complications arise. Some of these severe complications are considered to be patient injuries. We analyzed primary THR-related patient injuries in a nationwide setting. Patients and methods: We evaluated all the primary THR-related patient injury claims in Finland between 2008 and 2010. We used the original medical records and 2 nationwide registries, the Care Register for Social Welfare and Health Care and the Patient Injury Claim Register. Results: We identified 563 claims, 44% of which were compensated (n = 250). Of these 250 compensated claims, 79% were considered to be avoidable (treatment injuries) and 21% were severe unexpected infections (with a preoperative infection risk of less than 2%). The most common type of technical error was cup malposition (31%). High-volume hospitals (with an annual primary THR volume ? 400) had a lower patient injury rate. In lower-volume hospitals (with an annual primary THR volume of < 400), the relative risks (RRs) of patient injury for any reason, due to technical errors, or because of cup malposition were 2-fold (95% CI: 1.6?3.1), 4-fold (95% CI: 2.3?6.2), and 9-fold (95% CI: 3?28), respectively, compared to high-volume hospitals. Interpretation: Our study provides the first comprehensive nationwide data on THR-related patient injury types. Hospital volume was associated with the quality and quantity of errors detected. An annual hospital volume of ? 400 primary THRs was established as a protective factor against patient injuries.