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Acta Orthopaedica

Andreas Asheim, Sara Marie Nilsen, Marlen Toch-Marquardt, Kjartan Sarheim Anthun, Lars Gunnar Johnsen, Johan Håkon Bjårngaard
Background and purpose - There are numerous studies on the weekend effect for hip fracture patients, with conflicting results. We analyzed time of admission and discharge, and the association with mortality and length of hospital stay in more detail. Patients and methods - We used data from 61,211 surgically treated hip fractures in 55,211 patients, admitted to Norwegian hospitals 2008-2014. All patients were aged 50 years or older. Data were analyzed with Cox and Poisson regression. Results - Mortality within 30 days did not differ substantially by day of admission, although admissions on Sundays and holidays had a slightly increased mortality...
November 6, 2018: Acta Orthopaedica
Peter Thomas, Philipp Hisgen, Hartmuth Kiefer, Ulf Schmerwitz, Andreas Ottersbach, Dominique Albrecht, Burkhard Summer, Christian Schinkel
Background and purpose - Metal sensitivity might provoke complications after arthroplasty. Correspondingly, coated "hypoallergenic" implants are of interest but long-term follow-up data are missing. Thus, we assessed immunological and clinical parameters in such patients. Patients and methods - 5 years' follow-up data were obtained from 3 centers, which used either a standard total knee replacement (TKR) or the identical implant with multilayer surface zirconium nitride based coating. Of the 196 patients (mean age 68 years (44-84), 110 females) 97 had arthroplasty with a coated surface, and 99 were treated by a standard TKR of the same type...
October 29, 2018: Acta Orthopaedica
Panagiotis Tsagozis, Michael Parry, Robert Grimer
Background and purpose - The long-term outcome of reconstruction with extendible prostheses after resection of tumors the proximal tibia in children is unknown. We investigated the functional outcome, complication rate and final limb salvage rate after this procedure. Patients and methods - 42 children who had a primary extendible replacement of the proximal tibia for bone tumor with a Stanmore implant between 1992 and 2013 were identified in the department's database. All notes were reviewed to identify the oncological and functional outcomes, the incidence of complications and the rate of amputation...
October 29, 2018: Acta Orthopaedica
Joachim Horn, Ivan Hvid, Stefan Huhnstock, Anne B Breen, Harald Steen
Background and purpose - Limb lengthening with an intramedullary motorized nail is a relatively new method. We investigated if lengthening nails are reliable constructs for limb lengthening and deformity correction in the femur and the tibia. Patients and methods - 50 lengthenings (34 Precice and 16 Fitbone devices) in 47 patients (mean age 23 years [11-61]) with ≥12 months follow-up are included in this study. 30 lengthenings were done due to congenital and 20 because of posttraumatic deformity (21 antegrade femora, 23 retrograde femora, 6 tibiae)...
October 29, 2018: Acta Orthopaedica
Anneke Spekenbrink-Spooren, Liza N Van Steenbergen, Geke A W Denissen, Bart A Swierstra, Rudolf W Poolman, Rob G H H Nelissen
Background and purpose - The preference for a cruciate retaining (CR) or posterior stabilized (PS) TKA (total knee arthroplasty) system varies greatly between Dutch hospitals, independent of patient characteristics. We examined mid-term revision rates for men and women of different age categories. Patients and methods - We included all 133,841 cemented fixed-bearing primary CR or PS TKAs for osteoarthritis reported in the Dutch Arthroplasty Register (LROI) in 2007-2016. Revision procedures were defined as minor when only insert and/or patella were revised and as major when fixed components (tibia and femur) were revised or removed...
October 23, 2018: Acta Orthopaedica
Jarry T Porsius, Nina M C Mathijssen, Lisette C M Klapwijk-Van Heijningen, Jeroen C Van Egmond, Marijke Melles, Stephan B W Vehmeijer
Background and purpose - Little is known about heterogeneity in early recovery after primary total hip arthroplasty (THA). Therefore, we characterized subgroups of patients according to their hip function trajectory during the first 6 weeks after THA in a fast-track setting. Patients and methods - 94 patients (median age 65 years [41-82], 56 women) from a single hospital participated in a diary study. Patients recorded their severity of hip problems (Oxford Hip Score, OHS) weekly for 6 weeks after THA. Latent class growth modelling (LCGM) was used to identify patients with the same hip function trajectory and to compare these subgroups on patient characteristics...
October 23, 2018: Acta Orthopaedica
Julie Sandell Jacobsen, Kristian Thorborg, Per Hölmich, Lars Bolvig, Stig Storgaard Jakobsen, Kjeld Søballe, Inger Mechlenburg
Background and purpose - Knowledge of physical activity profiles among patients with hip dysplasia is lacking. We investigated whether patients with hip dysplasia change physical activity profile from before to 1 year after periacetabular osteotomy. Furthermore, we investigated associations between change in accelerometer-based physical activity and change in self-reported participation in preferred physical activities (PA). Patients and methods - Physical activity was objectively measured at very low to high intensity levels with accelerometer-based sensors...
October 18, 2018: Acta Orthopaedica
Yu-Bin Liu, Song-Jian Li, Li Zhao, Bo Yu, Da-Hang Zhao
Background and purpose - There are still controversies as to the age for beginning treatment with the Ponseti method. We evaluated the clinical outcome with different age at onset of Ponseti management for clubfoot. Patients and methods - 90 included children were divided into 3 groups in terms of age at start of treatment. The difference in treatment-related and prognosis-related variables including presentation age, initial Pirani and Dimeglio score, casts required, relapse rates, final Dimeglio score, and international clubfoot study group score (ICFSG) was analyzed...
October 18, 2018: Acta Orthopaedica
Erdem A Sezgin, Otto Robertsson, Annette W-Dahl, Lars Lidgren
Background and purpose - The nonagenarian (those aged 90 years and older) population is expected to double in the next 20 years. This demographic age quake may have a significant impact on the incidence of total knee arthroplasty (TKA), although current literature provides limited data. We examined death and revision rates, patient-reported outcomes (PROs) and bias on patient selection of nonagenarian patients operated on with TKA for osteoarthritis (OA) between 2000 and 2016. Patients and methods - The Swedish national knee arthroplasty register was used to identify 329 nonagenarians (mean age, 92 years)...
October 18, 2018: Acta Orthopaedica
Magnus Bernhardsson, Per Aspenberg
Background and purpose - Teriparatide accelerates fracture healing in animals and probably in man. Abaloparatide is a new drug with similar although not identical effects on the teriparatide receptor. Given at 4 times the teriparatide dose in a human osteoporosis trial, abaloparatide increased bone density more than teriparatide, and both reduced fracture risk. We investigated in mice whether abaloparatide stimulates fracture healing, and if it does so with the suggested dose effect relation (4:1). Patients and methods - In a validated mouse model for metaphyseal healing (burr hole with screw pull-out), 96 mice were randomly allocated to 11 groups: control (saline), teriparatide or abaloparatide, where teriparatide and abaloparatide were given at 5 different doses each...
October 18, 2018: Acta Orthopaedica
Stefan J Gelderman, Paul C Jutte, Ronald Boellaard, Joris J W Ploegmakers, David Vállez García, Greetje A Kampinga, Andor W J M Glaudemans, Marjan Wouthuyzen-Bakker
Background and purpose - 18 F-fluorodeoxyglucose positron emission tomography (FDG-PET) can be used in the diagnostic work-up of a patient with suspected periprosthetic joint infection (PJI) but, due to a lack of accurate interpretation criteria, this technique is not routinely applied. Since the physiological uptake pattern of FDG around a joint prosthesis is not fully elucidated, we determined the physiological FDG uptake in non-infected total hip prostheses. Patients and methods - Patients treated with primary total hip arthroplasty (1995-2016) who underwent a FDG-PET/CT for an indication other than a suspected PJI were retrospectively evaluated...
October 18, 2018: Acta Orthopaedica
Sunniva Leer-Salvesen, Eva Dybvik, Lars B Engesaeter, Ola E Dahl, Jan-Erik Gjertsen
Background and purpose - Controversies exist regarding thromboprophylaxis in orthopedic surgery. We studied whether the thromboprophylaxis in hip fracture patients treated with osteosynthesis should start preoperatively or postoperatively. Data were extracted from the nationwide Norwegian Hip Fracture Register (NHFR). The risks of postoperative deaths, reoperations, and intraoperative bleeding were studied within 6 months after surgery. Patients and methods - After each operation for hip fracture in Norway the surgeon reports information on the patient, the fracture, and the operation to the NHFR...
October 17, 2018: Acta Orthopaedica
Terje Terjesen, Darko Anticevic
No abstract text is available yet for this article.
October 17, 2018: Acta Orthopaedica
Rahul Bhattacharyya, Kapil Sugand, Bilal Al-Obaidi, Ian Sinha, Rajarshi Bhattacharya, Chinmay M Gupte
Background and purpose - Cognitive task analysis (CTA) has been used extensively to train pilots and in other surgical specialties. However, the use of CTA within orthopedics is in its infancy. We evaluated the effectiveness of a novel CTA tool to improve understanding of the procedural steps in antegrade femoral intramedullary nailing. Material and methods - Design: A modified Delphi technique was used to generate a CTA from 3 expert orthopedic trauma surgeons for antegrade femoral intramedullary nailing. The written and audiovisual information was combined to describe the technical steps, decision points, and errors for each phase of this procedure Validation: A randomized double-blind controlled trial was undertaken with 22 medical students (novices) randomized into 2 equal groups...
October 17, 2018: Acta Orthopaedica
Gunnar Hägglund, Mikael Goldring, Maria Hermanson, Elisabet Rodby-Bousquet
Background and purpose - Pelvic obliquity, common in individuals with cerebral palsy (CP), changes the muscle force vector on the hip joint and probably affects the risk of hip dislocation. We evaluated a new method for measurement of hip displacement in CP that takes the pelvic obliquity into account: the pelvic adjusted migration percentage (PAMP). Children and methods - From the Swedish surveillance program for cerebral palsy (CPUP), the first pelvic radiograph of 268 children <18 years in southern Sweden during a 3-year period were evaluated...
October 17, 2018: Acta Orthopaedica
Pelle B Petersen, Henrik Kehlet, Christoffer C Jørgensen
Background and purpose - Acute myocardial infarction (MI) is a leading cause of mortality following total hip and knee arthroplasty (THA/TKA). The reported 30-day incidence of MI varies from 0.3% to 0.9%. However, most data derive from administration and insurance databases or large RCTs with potential confounding factors. We studied the incidence of and potential modifiable risk factors for postoperative MI in a large, multicenter optimized "fast-track" THA/TKA setting. Patients and methods - A prospective cohort study was conducted on consecutive unselected elective primary unilateral THA and TKA, using prospective information on comorbidities and complete 90-day follow-up from the Danish National Patient Registry...
October 17, 2018: Acta Orthopaedica
Lars L Hermansen, Martin H Haubro, Bjarke L Viberg, Søren Overgaard
No abstract text is available yet for this article.
October 17, 2018: Acta Orthopaedica
Benjamin Puliero, William G Blakeney, Yann Beaulieu, Alain Roy, Pascal-André Vendittoli
No abstract text is available yet for this article.
October 1, 2018: Acta Orthopaedica
Max Gordon
No abstract text is available yet for this article.
October 2018: Acta Orthopaedica
B Harald Brismar, Ola Hallert, Anna Tedhamre, J Urban Lindgren
Background and purpose - The minimally invasive direct anterior (DA) approach for total hip arthroplasty (THA) is supposed to reduce surgical tissue trauma. We hypothesized that patients operated with the DA technique would have less postoperative pain and better hip function compared with a group operated with a conventional direct lateral (DL) approach. Patients and methods - 100 patients with hip osteoarthritis scheduled for THA were equally randomized to surgery through either DA or DL. Pain was assessed on a VAS scale, hip function with TUG, 10mWT, HHS, and quality of life with EQ-5D...
October 2018: Acta Orthopaedica
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