The rate of screw misplacement in segmental pedicle screw fixation in adolescent idiopathic scoliosis.

abstract：BACKGROUND AND PURPOSE:We previously evaluated a new uncemented femoral stem designed for elderly patients with a femoral neck fracture and found stable implant fixation and good clinical results up to 2 years postoperatively, despite substantial periprosthetic bone mineral loss. We now present the medium-term follow-u...

journal_title：Acta orthopaedica

authors： Sköldenberg OG,Sjöö H,Kelly-Pettersson P,Bodén H,Eisler T,Stark A,Muren O

更新日期：2014-08-01 00:00:00

abstract：BACKGROUND:Fat embolism (FE), the release of bone marrow contents into the circulation and the subsequent cardiovascular changes, is still a potentially fatal com-plication during orthopedic surgery. Different causative factors have been suggested, but the exact pathomechanism of FE still remains unclear. We investigat...

journal_title：Acta orthopaedica

authors： Aebli N,Schwenke D,Davis G,Hii T,Theis JC,Krebs J

更新日期：2005-12-01 00:00:00

abstract：:Background and purpose - The long-term effects of computer-assisted surgery in total knee replacement (CAS) compared to conventionally operated knee replacement (CON) are still not clear. We compared survivorship and relative risk of revision in CAS and CON based on data from the Norwegian Arthroplasty Register. Patie...

journal_title：Acta orthopaedica

authors： Dyrhovden GS,Fenstad AM,Furnes O,Gøthesen Ø

更新日期：2016-12-01 00:00:00

abstract：BACKGROUND:We developed a total hip system using osseointegration guidelines, a metaphyseal-loading proximal femoral replacement in the retained neck and a dual-geometry titanium shell in the acetabulum. PATIENTS AND METHODS:A randomized controlled clinical trial was undertaken in 52 patients (53 hips), using the ceme...

journal_title：Acta orthopaedica

authors： Carlsson LV,Albrektsson BE,Albrektsson BG,Albrektsson TO,Jacobsson CM,Macdonald W,Regnér L,Röstlund T,Weidenhielm LR

更新日期：2006-08-01 00:00:00

abstract：:Background and purpose - Femoral neck preserving hip replacement has been suggested to improve clinical results and facilitate late revision. We compared the 2-year outcome and radiostereometric pattern of femoral head migration between the Collum Femoris Preserving (CFP) stem and the Corail stem. Patients and methods...

journal_title：Acta orthopaedica

authors： Klein LJ,Puretic G,Mohaddes M,Kärrholm J

更新日期：2019-06-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The reproducibility of results and potential confounders in sample-based studies is important to consider in the assessment of studies. Comprehensive arthroplasty registers could serve as a reference dataset for comparative analyses. We analyzed an implant that is frequently used worldwide, the O...

journal_title：Acta orthopaedica

authors： Labek G,Sekyra K,Pawelka W,Janda W,Stöckl B

更新日期：2011-04-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The pathomechanics of the Essex-Lopresti lesion are not fully understood. We used human cadavers and documented the genesis of the injury with high-speed cameras. METHODS:4 formalin-fixed cadaveric specimens of human upper extremities were tested in a prototype, custom-made, drop-weight test ben...

journal_title：Acta orthopaedica

authors： Wegmann K,Engel K,Burkhart KJ,Ebinger M,Holz R,Brüggemann GP,Müller LP

更新日期：2014-04-01 00:00:00

abstract：BACKGROUND:We have previously reported that 6 months of oral treatment with clodronate reduced the migration of the NexGen total knee prosthesis during the first postoperative year, as measured by radiostereometry (RSA). We now report the 4-year results. METHODS:This was a double-blind randomized study, using RSA with...

journal_title：Acta orthopaedica

authors： Hilding M,Aspenberg P

更新日期：2006-12-01 00:00:00

abstract：:Background and purpose - Osteoarthritis has become the most common indication for shoulder arthroplasty in Denmark, and the treatment strategies have changed towards the use of anatomical total shoulder arthroplasty and reverse shoulder arthroplasty. We investigated whether changes in the use of arthroplasty types hav...

journal_title：Acta orthopaedica

authors： Rasmussen JV,Amundsen A,Sørensen AKB,Klausen TW,Jakobsen J,Jensen SL,Olsen BS

更新日期：2019-10-01 00:00:00

abstract：:Background and purpose - A lifetime perspective on revision risks is needed for optimal timing of arthroplasty in osteoarthritis (OA) patients, weighing the benefit of total hip arthroplasty/total knee arthroplasty (THA/TKA) against the risk of revision, after which outcomes are less favorable. Therefore, we provide p...

journal_title：Acta orthopaedica

authors： Gademan MGJ,Van Steenbergen LN,Cannegieter SC,Nelissen RGHH,Marang-Van De Mheen PJ

更新日期：2021-01-22 00:00:00

abstract：BACKGROUND:The advent of highly crosslinked polyethylene has allowed the re-evaluation of the use of femoral heads larger than 32 mm for metal-on-polyethylene total hip arthroplasties. However, the effect of larger heads on the frictional torque of highly crosslinked polyethylene is unknown. METHODS:We performed an in...

journal_title：Acta orthopaedica

authors： Burroughs BR,Muratoglu OK,Bragdon CR,Wannomae KK,Christensen S,Lozynsky AJ,Harris WH

更新日期：2006-10-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Hospital volume has been suggested to be one of the best indicators of adverse orthopedic events in patients undergoing THR surgery. We therefore evaluated the effect of hospital volume on the length of stay, re-admissions, and complications of THR at the population level in Finland. METHODS:30,...

journal_title：Acta orthopaedica

authors： Mäkelä KT,Häkkinen U,Peltola M,Linna M,Kröger H,Remes V

更新日期：2011-02-01 00:00:00

abstract：:Background and purpose - Several surgical approaches are used in primary total hip arthroplasty (THA). In this randomized controlled trial we compared gait, risk of fall, self-reported and clinical measurements between subjects after direct superior approach (DSA) versus posterolateral approach (PL) for THA. Patients ...

journal_title：Acta orthopaedica

authors： Ulivi M,Orlandini L,Vitale JA,Meroni V,Prandoni L,Mangiavini L,Rossi N,Peretti GM

更新日期：2021-01-07 00:00:00

abstract：BACKGROUND AND PURPOSE:Bones used in mechanical studies are frequently harvested from human cadavers that have been embalmed in a buffered formaldehyde solution. It has been reported that formaldehyde fixation or freezing hardly affects the mechanical properties of bone after a storage period of several weeks. However,...

journal_title：Acta orthopaedica

authors： van Haaren EH,van der Zwaard BC,van der Veen AJ,Heyligers IC,Wuisman PI,Smit TH

更新日期：2008-10-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Intraoperative periprosthetic femoral fracture is a known complication of cementless total hip arthroplasty (THA). We determined the incidence of--and risk factors for--intraoperative calcar fracture, and assessed its influence on the risk of revision. PATIENTS AND METHODS:This retrospective ana...

journal_title：Acta orthopaedica

authors： Miettinen SS,Mäkinen TJ,Kostensalo I,Mäkelä K,Huhtala H,Kettunen JS,Remes V

更新日期：2016-01-01 00:00:00

abstract：BACKGROUND:Overweight and a high level of physical activity are known risk factors for loosening of a total hip arthroplasty (THA) due to primary osteoarthritis. We wanted to investigate how these factors, together with age and sex, affect the risk of revision surgery. PATIENTS AND METHODS:We matched data from the Nor...

journal_title：Acta orthopaedica

authors： Flugsrud GB,Nordsletten L,Espehaug B,Havelin LI,Meyer HE

更新日期：2007-02-01 00:00:00

abstract：BACKGROUND:Hospital-specific variation in outcome is generally considered to be an important source of information for clinical improvement. We have measured the magnitude of this variation. METHODS:We determined the revision risk in 37,642 cemented primary total knee arthroplasties inserted as a result of osteoarthri...

journal_title：Acta orthopaedica

authors： Robertsson O,Ranstam J,Lidgren L

更新日期：2006-06-01 00:00:00

abstract：:Background and purpose - There is a lack of information on any associations between the functional outcome and age and diagnosis in patients who have undergone shoulder arthroplasty. We therefore evaluated the functional outcome in "young" and "old" patients treated with either hemiarthroplasty (HA) or total shoulder ...

journal_title：Acta orthopaedica

authors： Sowa B,Thierjung H,Bülhoff M,Loew M,Zeifang F,Bruckner T,Raiss P

更新日期：2017-06-01 00:00:00

abstract：:Background and purpose - Although the use of patient-specific positioning guides (PSPGs) in total knee replacement (TKR) in theory is promising, the technique has not yet proven its superior- ity compared with the conventional method. We compared radio- logical alignment and clinical outcome between TKR performed with...

journal_title：Acta orthopaedica

authors： Van Leeuwen JAMJ,Snorrason F,Röhrl SM

更新日期：2018-02-01 00:00:00

abstract：BACKGROUND:Aseptic loosening is the major cause of implant failure. In cemented hip arthroplasty, failure of the acetabular side is mainly due to lysis caused by wear particles. By using an implant with low wear characteristics and by enhancing acetabular fixation using an uncemented implant, we aimed to reduce acetabu...

journal_title：Acta orthopaedica

authors： Vassan UT,Sharma S,Chowdary KP,Bhamra MS

更新日期：2007-08-01 00:00:00

abstract：BACKGROUND:Treatment of proximal humerus fractures in elderly patients is challenging because of reduced bone quality. We determined the in vitro characteristics of a new implant developed to target the remaining bone stock, and compared it with an implant in clinical use. METHODS:Following osteotomy, left and right h...

journal_title：Acta orthopaedica

authors： Duda GN,Epari DR,Babst R,Lambert SM,Matthys R,Südkamp NP

更新日期：2007-06-01 00:00:00

abstract：BACKGROUND:The mechanism of failure of metal-on-metal (MoM) total hip arthroplasty (THA) has been related to a high rate of metal wear debris, which is partly generated from the head-trunnion interface. However, it is not known whether implant fixation is affected by metal wear debris. PATIENTS AND METHODS:49 cases of...

journal_title：Acta orthopaedica

authors： Hjorth MH,Søballe K,Jakobsen SS,Lorenzen ND,Mechlenburg I,Stilling M

更新日期：2014-08-01 00:00:00

abstract：:Background and purpose - Functional limitations after total knee arthroplasty (TKA) are common. In this longitudinal study, we wanted to identify subgroups of patients with distinct trajectories of pain-related interference with walking during the first year after TKA and to determine which demographic, clinical, symp...

journal_title：Acta orthopaedica

authors： Lindberg MF,Miaskowski C,RustøEn T,Rosseland LA,Cooper BA,Lerdal A

更新日期：2016-12-01 00:00:00

abstract：BACKGROUND:Laboratory tests and early clinical studies have shown that highly cross-linked polyethylene (PE) markedly improves wear resistance compared to conventional PE. We evaluated this type of PE in two randomized clinical studies using radiostereometric analysis (RSA). The 2- and 3-year follow-up of these studies...

journal_title：Acta orthopaedica

authors： Digas G,Kärrholm J,Thanner J,Herberts P

更新日期：2007-12-01 00:00:00

abstract：: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...

journal_title：Acta orthopaedica

authors： Helkamaa T,Hirvensalo E,Huhtala H,Remes V

更新日期：2016-06-01 00:00:00

abstract：:Background and purpose-Nonunion is common in femoral fractures. Previous studies suggested that the systemic immune response after trauma can interfere with fracture healing. Therefore, we investigated whether there is a relation between peripheral blood cell counts and healing of femur fractures. Patients and methods...

journal_title：Acta orthopaedica

authors： Hesselink L,Bastian OW,Heeres M,Ten Berg M,Huisman A,Hoefer IE,van Solinge WW,Koenderman L,van Wessem KJP,Leenen LPH,Hietbrink F

更新日期：2018-10-01 00:00:00

abstract：:Background and purpose - Most guidelines use patient age as a primary decision factor when choosing between osteosynthesis or arthroplasty in displaced femoral neck fractures. We evaluate reoperation and death risk within 1 year after osteosynthesis, and estimate the influence of age, sex, degree of displacement, and ...

journal_title：Acta orthopaedica

authors： Nyholm AM,Palm H,Sandholdt H,Troelsen A,Gromov K,DFDB COLLABORATORS.

更新日期：2020-02-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Total knee replacements (TKRs) are being increasingly performed in patients aged < or = 65 years who often have high physical demands. We investigated the relation between age of the patient and prosthesis survival following primary TKR using nationwide data collected from the Finnish Arthroplast...

journal_title：Acta orthopaedica

authors： Julin J,Jämsen E,Puolakka T,Konttinen YT,Moilanen T

更新日期：2010-08-01 00:00:00

abstract：:Background and purpose - Threshold values defining 3 categories of passive range of motion are used in the Cerebral Palsy follow-Up Program to guide clinical decisions. The aim of this study was to investigate the threshold values by testing the hypothesis that passive range of motion in ankle dorsiflexion is associat...

journal_title：Acta orthopaedica

authors： Rasmussen HM,Svensson J,Thorning M,Pedersen NW,Overgaard S,Holsgaard-Larsen A

更新日期：2018-08-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The PRECICE intramedullary limb lengthening system uses a new technique with a magnetic rod and a motorized external remote controller (ERC) with rotational magnetic field. We evaluated the reliability and safety of the PRECICE system. METHODS:We compared our preliminary results with PRECICE in ...

journal_title：Acta orthopaedica

authors： Schiedel FM,Vogt B,Tretow HL,Schuhknecht B,Gosheger G,Horter MJ,Rödl R

更新日期：2014-06-01 00:00:00