Browsing Bergen Open Research Archive by Author "Mäkelä, Keijo T."
Now showing items 1-8 of 8
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Countrywise results of total hip replacement. An analysis of 438,733 hips based on the Nordic Arthroplasty Register Association database
Mäkelä, Keijo T.; Matilainen, Markus; Pulkkinen, Pekka; Fenstad, Anne Marie; Havelin, Leif Ivar; Engesæter, Lars B.; Furnes, Ove; Overgaard, Søren; Pedersen, Alma Becic; Kärrholm, Johan; Malchau, Henrik; Garellick, Göran; Ranstam, Jonas; Eskelinen, Antti (Peer reviewed; Journal article, 2014)Background and purpose: An earlier Nordic Arthroplasty Register Association (NARA) report on 280,201 total hip replacements (THRs) based on data from 1995–2006, from Sweden, Norway, and Denmark, was published in 2009. The ... -
The effect of fixation type on the survivorship of contemporary total knee arthroplasty in patients younger than 65 years of age: a register-based study of 115,177 knees in the Nordic Arthroplasty Register Association (NARA) 2000–2016
Niemeläinen, Mika J; Mäkelä, Keijo T.; Robertsson, Otto; W-Dahl, Annette; Furnes, Ove; Fenstad, Anne Marie; Pedersen, Alma B; Schrøder, Henrik M.; Reito, Aleksi; Eskelinen, Antti (Journal article; Peer reviewed, 2020)Background and purpose — Cemented fixation is regarded as the gold standard in total knee arthroplasty (TKA). Among working-age patients, there has been controversy regarding the optimal fixation method in TKA. To address ... -
Failure rate of cemented and uncemented total hip replacements: register study of combined Nordic database of four nations
Mäkelä, Keijo T.; Matilainen, Markus; Pulkkinen, Pekka; Fenstad, Anne Marie; Havelin, Leif Ivar; Engesæter, Lars B.; Furnes, Ove; Pedersen, Alma B; Overgaard, Søren; Kärrholm, Johan; Malchau, Henrik; Garellick, Göran; Ranstam, Jonas; Eskelinen, Antti (Peer reviewed; Journal article, 2014)Objective: To assess the failure rate of cemented, uncemented, hybrid, and reverse hybrid total hip replacements in patients aged 55 years or older. Design: Register study. Setting: Nordic Arthroplasty Register Association ... -
Hydroxyapatite coating does not improve uncemented stem survival after total hip arthroplasty!: An analysis of 116,069 THAs in the Nordic Arthroplasty Register Association (NARA) database
Hailer, Nils P.; Lazarinis, Stergios; Mäkelä, Keijo T.; Eskelinen, Antti; Fenstad, Anne Marie; Hallan, Geir; Havelin, Leif Ivar; Overgaard, Søren; Pedersen, Alma B.; Mehnert, Frank; Kärrholm, Johan (Peer reviewed; Journal article, 2014-09-01)Background and purpose — It is still being debated whether HA coating of uncemented stems used in total hip arthroplasty (THA) improves implant survival. We therefore investigated different uncemented stem brands, with and ... -
Impact of the Nordic Arthroplasty Register Association (NARA) collaboration on demographics, methods and revision rates in knee arthroplasty: a register-based study from NARA 2000–2017
Irmola, Tero; Ponkilainen, Ville; Mäkelä, Keijo T.; Robertsson, Otto; W-Dahl, Annette; Furnes, Ove Nord; Fenstad, Anne Marie; Pedersen, Alma B.; Schrøder, Henrik M.; Niemeläinen, Mika J.; Eskelinen, Antti (Journal article; Peer reviewed, 2022)Background and purpose: We have previously observed differences in treatment and outcome of knee arthroplasties in the Nordic countries. To evaluate the impact of Nordic collaboration in the last 15 years we aimed to compare ... -
Increasing risk of revision due to infection after primary total hip arthroplasty: results from the Nordic Arthroplasty Register Association
Dale, Håvard; Fenstad, Anne Marie; Hallan, Geir; Overgaard, Søren; Pedersen, Alma B.; Hailer, Nils P.; Kärrholm, Johan; Rolfson, Ola; Eskelinen, Antti; Mäkelä, Keijo T.; Furnes, Ove Nord (Journal article; Peer reviewed, 2023)Background and purpose: The incidence of periprosthetic joint infection after total hip arthroplasty (THA) may be increasing. We performed time-trend analyses of risk, rates, and timing of revision due to infection after ... -
Is there a reduction in risk of revision when 36-mm heads instead of 32 mm are used in total hip arthroplasty for patients with proximal femur fractures?
Tsikandylakis, G; Kärrholm, Johan; Hallan, Geir; Furnes, Ove; Eskelinen, Antti; Mäkelä, Keijo T.; Pedersen, Alma B; Overgaard, Søren; Mohaddes, M. (Journal article; Peer reviewed, 2020)Background and purpose — 32-mm heads are widely used in total hip arthroplasty (THA) in Scandinavia, while the proportion of 36-mm heads is increasing as they are expected to increase THA stability. We investigated whether ... -
Outcome of 881 total hip arthroplasties in 747 patients 21 years or younger: data from the Nordic Arthroplasty Register Association (NARA) 1995-2016
Halvorsen, Vera Baasland; Fenstad, Anne Marie; Engesæter, Lars B.; Nordsletten, Lars; Overgaard, Søren; Pedersen, Alma B.; Kärrholm, Johan; MOHADDES, MAZIAR; Eskelinen, Antti; Mäkelä, Keijo T.; Röhrl, Stephan Maximillian (Peer reviewed; Journal article, 2019-05-19)Background and purpose — The literature is scarce on the outcome of the youngest patients with total hip arthroplasties (THAs). We analyzed register data, revision risk, and related factors in patients 21 years or younger ...