In 1985, the Norwegian Orthopaedic Association decided to establish a national hip register, and Arthroplasty Register was started in 1987. January 1994, it extended include all artificial joints. The main purpose of register is detect inferior results implants as early possible. All hospitals participate, orthopedic surgeons are supposed report primary operations revisions. Using patient's unique social security number, revision can be linked operation, survival analyses done. general,...

Kurtz, Steven M. PhD; Ong, Kevin L. Schmier, Jordana MA; Mowat, Fionna Saleh, Khaled MD, MSc, FRSCS; Dybvik, Eva MSc; Kärrholm, Johan Garellick, Göran Havelin, Leif I. Furnes, Ove Malchau, Henrik Lau, Edmund MS Author Information

The risk of revision due to infection after primary total hip arthroplasty (THA) has been reported be increasing in Norway. We investigated whether this increase is a common feature the Nordic countries (Denmark, Finland, Norway, and Sweden).The study was based on Arthroplasty Register Association (NARA) dataset. 432,168 THAs from 1995 2009 were included (Denmark: 83,853, Finland 78,106, Norway 88,455, Sweden 181,754). Adjusted survival analyses performed using Cox regression models with as...

Background: We used the Nordic Arthroplasty Register Association database to evaluate whether age, sex, preoperative diagnosis, fixation, and implant design influence risk of revision arthroplasty due periprosthetic fracture within two years from operation a primary total hip replacement. Methods: Included in study were 325,730 cemented femoral stems 111,899 uncemented inserted 1995 2009. Seven frequently (two [Exeter Lubinus SP II] five [Bi-Metric, Corail, CLS Spotorno, ABG I, II])...

We studied the rates of revision for 53,698 primary total hip replacements (THRs) in nine different groups disease. Factors which have previously been shown to be associated with increased risk revision, such as male gender, young age, or certain types uncemented prosthesis, showed important differences between diagnostic groups. Without adjustment these factors we observed an patients paediatric diseases and a small heterogeneous 'other' group, compared osteoarthritis. Most were reduced...

Background and purpose The possibility of comparing results pooling the data has been limited for Nordic arthroplasty registries, because different registration systems questionnaires. We have established a common database, in order to compare demographics total hip replacement surgery between countries. In addition, we plan study patient groups which numbers are too small be studied individual countries.Material methods Primary replacements (THRs) from 1995–2006 were selected study....

Background and purpose The number of national arthroplasty registries is increasing. However, the methods registration, classification, analysis often differ. Methods We combined data from 3 Nordic knee registers, comparing demographics, methods, overall results. Primary arthroplasties during period 1997–2007 were included. Each register produced a dataset predefined variables, after which descriptive survival statistics produced. Results incidence increased in all countries, but most...

A high degree of registration completeness is necessary in order to obtain unbiased and accurate register-based study results. We investigated the national Norwegian Arthroplasty Register (NAR).Registration for years 1999-2002 was calculated as a percentage, with number joint replacements reported NAR numerator those Patient (NPR) denominator. While received information directly from orthopedic surgeons on voluntary basis, NPR, which mandatory, electronic administrative patient records...

Background: Concern exists regarding the durability of unicompartmental knee replacements. The purpose present study was to compare early failure rates and mechanisms primary cemented replacements with those tricompartmental total Methods: (n = 2288) 3032) as reported Norwegian Arthroplasty Register from January 1994 through December 2004 were compared use Kaplan-Meier estimated survival Cox multiple regression. Results: ten-year probability 80.1% (95% confidence interval, 76.0% 84.2%) for...

Background and purpose There have been few reports on the long-term outcome of ankle replacements. The Norwegian Arthroplasty Register has registering replacements since 1994, but no analysis these data published to date. Here we report use total revision rate in population over a 12-year period.Methods We used find arthroplasties performed between 1994 2005. Patient demographics, diagnoses, brands prosthesis, revisions, time trends were investigated.Results 257 primary replacements, 32...

We studied primary total knee replacements (TKRs), reported to the Norwegian Arthroplasty Register, operated on between 1994 and 2000. A Cox multiple regression model was used evaluate differences in survival among prosthesis brands, their types of fixation, whether or not patella resurfaced. In Norway 1999, incidence operations 35 per 100,000 inhabitants. Cement as fixation 87% knees, 10% were hybrid 2% uncemented implants. Bicompartmental (not resurfaced patella) prostheses 65% knees. With...

<b>Objective </b>To assess the failure rate of cemented, uncemented, hybrid, and reverse hybrid total hip replacements in patients aged 55 years or older. <b>Design</b> Register study. <b>Setting</b> Nordic Arthroplasty Association database (combined data from Sweden, Norway, Denmark, Finland). <b>Participants</b> 347 899 performed during 1995-2011. <b>Main outcome measures</b> Probability implant survival (Kaplan-Meier analysis) along with revision for any reason as endpoint (Cox multiple...

Background and purpose The Norwegian Hip Fracture Register was established in January 2005 to collect nationwide information as a basis for improved management of patients with hip fractures. We now report our experience after the first 2 years.Methods After both primary operations reoperations, surgeons fill standardized 1-page form about patient, fracture, operation. Fractures treated total arthroplasty are reported national register, but added fracture register before analyses performed....

Primary uncemented femoral stems reported to the Norwegian arthroplasty register between 1987 and 2005 were included in this prospective observational study. There 11 516 hips (9679 patients) 14 different designs of stem. Kaplan-Meier survival probabilities Cox regression used analyse data. With aseptic loosening as end-point, all currently performed excellently with 96% 100% at ten years. end-point stem revision for any cause, long-term results varied from poor excellent, 15 years ranging...

Previous studies on shoulder arthroplasty have usually described small patient populations, and few articles addressed the survival of implants. We describe results replacement in Norwegian population (of 4.7 million) during a 12-year period. Trends use study period were also investigated.1,531 hemiprostheses (HPs), 69 total replacements (Neer type TSR), 225 reversed (reversed TSR) operations reported to Arthroplasty Register between 1994 2005. Kaplan-Meier failure curves drawn up for...

Background — The surgical approach in total hip arthroplasty (THA) is often based on surgeon preference and local traditions. anterior muscle-sparing has recently gained popularity Europe. We tested the hypothesis that patient satisfaction, pain, function, health-related quality of life (HRQoL) after THA not related to approach.Patients 1,476 patients identified through Norwegian Arthroplasty Register were sent questionnaires 1–3 years undergoing period from January 2008 June 2010....

Background and purpose An earlier Nordic Arthroplasty Register Association (NARA) report on 280,201 total hip replacements (THRs) based data from 1995–2006, Sweden, Norway, Denmark, was published in 2009. The present study assessed THR survival according to country, the NARA database with Finnish included. Material methods 438,733 THRs performed during period 1995–2011 Finland were Kaplan-Meier analysis used calculate probabilities 95% confidence interval (CI). Cox multiple regression,...

We present the results for 4762 revision total hip arthroplasties with no previous infection in hip, which were reported to Norwegian Arthroplasty Register between 1987 and 2003. The ten-year failure rate revised prostheses was 26% (95% CI 25 26). Cox regression analyses undertaken separately acetabular femoral components. Cemented components without allograft reference category. For components, we found a significantly reduced risk of uncemented revisions both (relative (RR) = 0.66; 95%...

We have studied the mortality after total hip replacement (THR) of 39,543 patients, having a mean age 69 years, who were reported to Norwegian Arthroplasty Register. The median follow-up time was 5.2 (0-10.4) years. 323 6201 deaths occurred during first 60 postoperative days. patient compared with in population, using standardized ratios (SMR). SMRs and adjusted for age, gender, other possible confounders Cox regression model incorporating population mortality. observed lower patients THR...

Introduction The cementation of a total hip prosthesis may cause bone necrosis, either by direct toxicity or generation heat during the polymerization process. This necrotic create conditions that encourage growth bacteria. We compared revision rates due to infection in primary uncemented arthroplasties (THAs) with those cemented THAs antibiotic-loaded cement and without antibiotic cement.Methods Data from Norwegian Arthroplasty Register for period 1987–2003 were used. To have comparable...

In the Norwegian Arthroplasty Register, 15,335 primary total hip replacements (THR) in patients with arthrosis were followed for 0-5.4 years.The Kaplan-Meier estimate of cumulative failure (revision) after 4.5 years was 2.7 percent cemented THR, compared to 6.5 uncemented. under 65 revisions and uncemented THR 3.3 7.9 percent. For acetabular components, failures 0.6 1.7 uncemented, femoral components 3.9 years.Adjusting age sex using a Cox regression model, 2 times higher rates found...