Search results

Items from 1 to 20 out of 173 results

article

Stem to prevent periprosthetic fracture after notching in total knee arthroplasty

Qian Wan, Aobo Zhang, Yang Liu, Hao Chen, more

International Journal for Numerical Methods in Biomedical Engineering > 40 > 10 > n/a - n/a

Improper osteotomy during total knee arthroplasty (TKA) can lead to anterior femoral notching, which increases the risk of periprosthetic fractures due to stress concentration. One potential solution is the addition of an intramedullary stem to the femoral component. However, the optimal stem length remains unclear. In this study, we aimed to determine the optimal stem length using finite element...

article

Influence of sidewall retention and interference fit in total ankle replacement on implant‐bone micromotion: A finite element study

Joshua E. Johnson, Gabriel A. Clarke, Cesar Cesar Netto, Donald D. Anderson

Journal of Orthopaedic Research® > 42 > 7 > 1536 - 1544

The success of uncemented total ankle replacement (TAR) is linked to initial stability because bony ingrowth depends upon limited early micromotion. Tibial implant design fixation features resist micromotion aided by bony sidewall retention and interference fit. Our goal was to investigate factors influencing implant‐bone micromotion in TAR. Two TAR tibial components were virtually inserted into CT‐derived...

article

Impact of patient, surgical, and implant design factors on predicted tray–bone interface micromotions in cementless total knee arthroplasty

Huizhou Yang, Riza Bayoglu, Chadd W. Clary, Paul J. Rullkoetter

Journal of Orthopaedic Research® > 41 > 1 > 115 - 129

Micromotion magnitudes exceeding 150 µm may prevent bone formation and limit fixation after cementless total knee arthroplasty (TKA). Many factors influence the tray–bone interface micromotion but the critical parameters and sensitivities are less clear. In this study, we assessed the impacts of surgical (tray alignment, tibial coverage, and resection surface preparation), patient (bone properties...

article

Effect of varus alignment on the bone‐implant interaction of a cementless tibial baseplate during gait

Jonathan D. Glenday, Timothy M. Wright, Joseph D. Lipman, Peter K. Sculco, more

Journal of Orthopaedic Research® > 40 > 4 > 816 - 825

Component alignment in total knee arthroplasty is a determining factor for implant longevity. Mechanical alignment, which provides balanced load transfer, is the most common alignment strategy. However, a retrospective review found that varus alignment, which could lead to unbalanced loading, can happen in up to 18% of tibial baseplates. This may be particularly burdensome for cementless tibial baseplates,...

article

Analysis of implant stability changes in immediate loading using a laser displacement sensor in vivo and comparison of its sensitivity with that of resonance frequency analysis

Kazuhiro Murakami, Kazuhiko Yamamoto, Junichi Ishida, Sadami Tsutsumi, more

Clinical Oral Implants Research > 32 > 11 > 1341 - 1356

Objective The aim of this study was to analyze the stability changes in immediately loaded implants by using an in vivo quantitative measurement of micromotion under functional dynamic loading and to verify the sensitivity of Resonance Frequency Analysis (RFA) as compared to that of actual micromotion. Materials and methods The micromotions of immediately loaded implants placed in the tibia of...

article

Biomechanical evaluation of total ankle arthroplasty. Part II: Influence of loading and fixation design on tibial bone–implant interaction

Fernando J. Quevedo González, Brett D. Steineman, Daniel R. Sturnick, Jonathan T. Deland, more

Journal of Orthopaedic Research® > 39 > 1 > 103 - 111

Finite element (FE) models to evaluate the burden placed on the interaction between total ankle arthroplasty (TAA) implants and the bone often rely on peak axial forces. However, the loading environment of the ankle is complex, and it is unclear whether peak axial forces represent a challenging scenario for the interaction between the implant and the bone. Our goal was to determine how the loads and...

article

Micromotion and Push‐Out Evaluation of an Additive Manufactured Implant for Above‐the‐Knee Amputees

Spencer C. Barnes, Jon C. Clasper, Anthony M. J. Bull, Jonathan R. T. Jeffers

Journal of Orthopaedic Research® > 37 > 10 > 2104 - 2111

In comparison to through‐knee amputees the outcomes for above‐the‐knee amputees are relatively poor; based on this novel techniques have been developed. Most current percutaneous implant‐based solutions for transfemoral amputees make use of high stiffness intramedullary rods for skeletal fixation, which can have risks including infection, femoral fractures, and bone resorption due to stress shielding...

article

Interface Damage in Titanium Dental Implant Due to Tribocorrosion: The Role of Mastication Frequencies

Maria F. Alfaro, Peter K. Rossman, Isabella da Silva Viera Marques, Anirudh Dube, more

Journal of Bio- and Tribo-Corrosion > 2019 > 5 > 4 > 1-12

The aim of this study was to investigate the influence of fretting motions on the depassivation–repassivation processes occurring in Ti6Al4V alloy, at an in vitro simulated oral environment. Ti6Al4V discs were subjected to fretting–corrosion using a pin-on-disc tribometer. Specimens underwent 2000 motion cycles, with ± 500 µm of fretting stroke, and 8 N of load at frequencies of 1, 2, and 4 Hz. Surface...

article

Mechanical performance of cementless total knee replacements: It is not all about the maximum loads

Fernando J. Quevedo González, Joseph D. Lipman, Darrick Lo, Ivan De Martino, more

Journal of Orthopaedic Research® > 37 > 2 > 350 - 357

Finite element (FE) models are frequently used to assess mechanical interactions between orthopedic implants and surrounding bone. However, FE studies are often limited by the small number of bones that are modeled; the use of normal bones that do not reflect the altered bone density distributions that result from osteoarthritis (OA); and the application of simplified load cases usually based on...

article

Primary stability of total hip stems: does surgical technique matter?

Wolfram Steens, Robert Souffrant, Daniel Kluess, Wolfram Mittelmeier, more

Archives of Orthopaedic and Trauma Surgery > 2019 > 139 > 4 > 569-575

Background With this preliminary study we hypothesized a modified implantation technique may lead to higher primary stability than the conventional one. Methods In the conventional technique we used a sharp spoon to open the femoral cavity. Subsequently the opening was extended by increasing sizes of a sensing device to approve the final size. Finally, a bone compactor of the corresponding size...

article

Micromotion of implant-abutment interfaces (IAI) after loading: correlation of finite element analysis with in vitro performances

Zhi Li, Shanshan Gao, Hongyu Chen, Ruiyang Ma, more

Medical & Biological Engineering & Computing > 2019 > 57 > 5 > 1133-1144

Micromotion between IAI affects long-term survival rate of dental implants. The use of practical implants for mechanical test is costly. Finite element analysis (FEA) could test the micron level deformation changes, but whether it reflects the in vitro mechanical performances remains unknown. This study aims to investigate the correlation between IAI micromotion of FEA and in vitro performances. The...

article

Finite element based optimization design for a one-piece zirconia ceramic dental implant under dynamic loading and fatigue life validation

Yung-Chang Cheng, Cho-Pei Jiang, Deng-Huei Lin

Structural and Multidisciplinary Optimization > 2019 > 59 > 3 > 835-849

This study presents an optimization procedure for the design of a one-piece zirconia ceramic dental implant that uses finite element simulation with dynamic loads and experimental validation using a fatigue test. The key dimensions of the implant’s shape are the factors for the simulation. Their effect on micromotion is determined using a uniform design of experiment. The Kriging interpolation method...

article

Bone healing response in cyclically loaded implants: Comparing zero, one, and two loading sessions per day

Renan de Barros e Lima Bueno, Ana Paula Dias, Katia J. Ponce, Rima Wazen, more

Journal of the Mechanical Behavior of Biomedical Materials > 2018 > 85 > C > 152-161

When bone implants are loaded, they are inevitably subjected to displacement relative to bone. Such micromotion generates stress/strain states at the interface that can cause beneficial or detrimental sequels. The objective of this study is to better understand the mechanobiology of bone healing at the tissue-implant interface during repeated loading. Machined screw shaped Ti implants were placed...

article

Validation of model-predicted tibial tray-synthetic bone relative motion in cementless total knee replacement during activities of daily living

Alessandro Navacchia, Chadd W. Clary, Hayden L. Wilson, Yashar A. Behnam, more

Journal of Biomechanics > 2018 > 77 > C > 115-123

As fixation of cementless total knee replacement components during the first 4–6 weeks after surgery is crucial to establish bony ingrowth into the porous surface, several studies have quantified implant-bone micromotion. Relative motion between the tray and bone can be measured in vitro, but the full micromotion contour map cannot typically be accessed experimentally. Finite element models have been...

article

Microgap and Micromotion at the Implant Abutment Interface Cause Marginal Bone Loss Around Dental Implant but More Evidence is Needed

Ahmed Yaseen Alqutaibi, Afaf Noman Aboalrejal

Journal of Evidence Based Dental Practice > 2018 > 18 > 2 > 171-172

Influences of micro-gap and micromotion of the implant-abutment interface on marginal bone loss around implant neck. Liu Y, Wang J. Arch Oral Biol 2017;83:153-60.This study was financially supported by grants from the National Natural Science Foundation of China (81570956) and the Bureau of Science and Technology of Wuhan ([2014]160, 2015060101010051)Comprehensive literature review

article

Quantification of interfacial motions following primary and revision total knee arthroplasty: A verification study versus experimental data

Noel Conlisk, Colin R. Howie, Pankaj Pankaj

Journal of Orthopaedic Research® > 36 > 1 > 387 - 396

Motion at the bone–implant interface, following primary or revision knee arthroplasty, can be detrimental to the long‐term survival of the implant. This study employs experimentally verified computational models of the distal femur to characterize the relative motion at the bone–implant interface for three different implant types; a posterior stabilizing implant (PS), a total stabilizing implant...

article

The effect of a radial neck notch on press-fit stem stability: a biomechanical study on 7 cadavers

Dave R. Shukla, Dipit C. Sahu, James S. Fitzsimmons, Kai-Nan An, more

Journal of Shoulder and Elbow Surgery > 2018 > 27 > 3 > 523-529

Minimal micromotion is necessary for osteointegration of cementless radial head prostheses. When radial head fractures extend longitudinally, where the neck cut for prosthetic replacement should be made is uncertain. We hypothesized that complete resection of the notched portion of a radial neck confers no advantage in initial stability compared with not resecting the defect and inserting the implant...

article

Comparison between uncemented and cemented fixation for the tibial component in distal femoral replacement: a clinical and radiological study

Haijie Liang, Wei Guo, Rongli Yang, Xiaodong Tang, more

International Orthopaedics > 2018 > 42 > 9 > 2249-2261

Purposes We performed a retrospective, cohort study to compare uncemented tibial fixation with cemented tibial fixation in distal femoral replacement (DFR). Methods Sixty-two cases with uncemented tibial fixation and 58 cases with cemented tibial fixation were included. Inter-group comparisons were performed for baseline data, oncological and prosthetic outcomes, and changes of cortical thickness...

article

Micromotion analysis of different implant configuration, bone density, and crestal cortical bone thickness in immediately loaded mandibular full‐arch implant restorations: A nonlinear finite element study

Tsutomu Sugiura, Kazuhiko Yamamoto, Satoshi Horita, Kazuhiro Murakami, more

Clinical Implant Dentistry and Related Research > 20 > 1 > 43 - 49

Background Excessive micromotion may cause failure of osseointegration between the implant and bone. Purpose This study investigated the effects of implant configuration, bone density, and crestal cortical bone thickness on micromotion in immediately loaded mandibular full‐arch implant restorations. Materials and Methods A finite element model of the edentulous mandible was constructed. Four...

article

Experimental pre-clinical assessment of the primary stability of two cementless femoral knee components

Sanaz Berahmani, Maartje Hendriks, David Wolfson, Abraham Wright, more

Journal of the Mechanical Behavior of Biomedical Materials > 2017 > 75 > C > 322-329

To achieve long-lasting fixation of cementless implants, an adequate primary stability is required. We aimed to compare primary stability of a new cementless femoral knee component (Attune®) against a conventional implant (LCS®) under different loading conditions. Six pairs of femora were prepared following the normal surgical procedure. Calibrated CT-scans and 3D-optical scans of the bones were obtained...

Publication date

Last 3 months (1)
Last year (2)
Last 3 years (5)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Content availability

Available (170)
None (3)

Publication type

article (151)
book (22)

Publication language

English (172)
German (1)

Keywords

MICROMOTION (173)
FINITE ELEMENT ANALYSIS (24)
PRIMARY STABILITY (18)
BIOMECHANICS (10)
FINITE ELEMENT (10)
PROSTHETICS (10)
HIP (9)
OSSEOINTEGRATION (9)
TOTAL HIP ARTHROPLASTY (9)
TOTAL HIP REPLACEMENT (8)
TOTAL KNEE ARTHROPLASTY (8)
BONE (7)
IMPLANT (7)
IMPLANTS (7)
DOPPLER EFFECT (6)
FIXATION (6)
MICROELECTRODES (6)
RADAR IMAGING (6)
STABILITY (6)
ARTHROPLASTY (5)
ASEPTIC LOOSENING (5)
BIOMEDICAL ELECTRODES (5)
BIOMEDICAL MEASUREMENT (5)
DENTAL IMPLANT (5)
DENTAL IMPLANTS (5)
FEMORAL STEM (5)
NEUROPHYSIOLOGY (5)
PHYSIOLOGICAL MODELS (5)
PROSTHESIS (5)
SYNTHETIC APERTURE RADAR (5)
BONES (4)
BRAIN (4)
CELLULAR BIOPHYSICS (4)
CEMENTLESS (4)
CONTACT (4)
FRETTING (4)
IMAGING (4)
STRAIN (4)
WEAR (4)
BIOCHEMISTRY (3)
BIOLOGICAL TISSUES (3)
BIOMEDICAL MATERIALS (3)
BONE FAILURE (3)
CALIBRATION (3)
DIELECTROPHORESIS (3)
DIGITAL IMAGE CORRELATION (3)
DOPPLER RADAR (3)
ECIS (3)
GLIAL FIBRILLARY ACIDIC PROTEIN EXPRESSION (3)
IMMEDIATE LOADING (3)
IMPLANTABLE (3)
INITIAL STABILITY (3)
INTERFACIAL STRAIN (3)
LOADING (3)
MIGRATION (3)
MODULAR PROSTHESIS (3)
MOLECULAR BIOPHYSICS (3)
ORTHOPAEDICS (3)
POLYIMIDE (3)
PROTEINS (3)
RADIOSTEREOMETRIC ANALYSIS (3)
STEM–NECK INTERFACE (3)
STRESS (3)
SUBSIDENCE (3)
THA (3)
TOTAL KNEE REPLACEMENT (3)
UNCEMENTED (3)
ACCURACY (2)
ARRAYS (2)
BIOELECTRIC PHENOMENA (2)
BIOLOGICAL TECHNIQUES (2)
BIOMEDICAL EQUIPMENT (2)
BONE INGROWTH (2)
BONE STRAIN (2)
BONE-CEMENT INTERFACE (2)
BRAIN DIMPLING (2)
BRAIN TRAUMA (2)
BRIDGE CIRCUITS (2)
CADAVER (2)
CANCELLOUS BONE (2)
CEMENTLESS STEM (2)
CEMENTLESS TIBIA (2)
CHRONIC NEURAL RECORDINGS (2)
CHRONIC TISSUE RESPONSE (2)
COILS (2)
COLLAGEN NETWORK (2)
COLLAGENASE-AIDED INSERTION (2)
COMPUTER-CONTROLLED ELECTRODE INSERTION FORCE (2)
DENTISTRY (2)
DIFFERENTIAL TRANSFORMERS (2)
DOPPLER PHASE (2)
ELECTROPHORESIS (2)
ENZYMES (2)
FEATURE EXTRACTION (2)
FEMUR (2)
FINITE ELEMENT MODELING (2)
FINITE ELEMENT SIMULATION (2)
FLEXIBLE POLYMER INTERCONNECTS (2)
FRACTURE (2)
GLENOID BASEPLATE (2)
more

Data set

Elsevier (98)
ieee (31)
Springer (23)
Wiley (21)

INFONA - science communication portal

Search results

Stem to prevent periprosthetic fracture after notching in total knee arthroplasty

Influence of sidewall retention and interference fit in total ankle replacement on implant‐bone micromotion: A finite element study

Impact of patient, surgical, and implant design factors on predicted tray–bone interface micromotions in cementless total knee arthroplasty

Effect of varus alignment on the bone‐implant interaction of a cementless tibial baseplate during gait

Analysis of implant stability changes in immediate loading using a laser displacement sensor in vivo and comparison of its sensitivity with that of resonance frequency analysis

Biomechanical evaluation of total ankle arthroplasty. Part II: Influence of loading and fixation design on tibial bone–implant interaction

Micromotion and Push‐Out Evaluation of an Additive Manufactured Implant for Above‐the‐Knee Amputees

Interface Damage in Titanium Dental Implant Due to Tribocorrosion: The Role of Mastication Frequencies

Mechanical performance of cementless total knee replacements: It is not all about the maximum loads

Primary stability of total hip stems: does surgical technique matter?

Micromotion of implant-abutment interfaces (IAI) after loading: correlation of finite element analysis with in vitro performances

Finite element based optimization design for a one-piece zirconia ceramic dental implant under dynamic loading and fatigue life validation

Bone healing response in cyclically loaded implants: Comparing zero, one, and two loading sessions per day

Validation of model-predicted tibial tray-synthetic bone relative motion in cementless total knee replacement during activities of daily living

Microgap and Micromotion at the Implant Abutment Interface Cause Marginal Bone Loss Around Dental Implant but More Evidence is Needed

Quantification of interfacial motions following primary and revision total knee arthroplasty: A verification study versus experimental data

The effect of a radial neck notch on press-fit stem stability: a biomechanical study on 7 cadavers

Comparison between uncemented and cemented fixation for the tibial component in distal femoral replacement: a clinical and radiological study

Micromotion analysis of different implant configuration, bone density, and crestal cortical bone thickness in immediately loaded mandibular full‐arch implant restorations: A nonlinear finite element study

Experimental pre-clinical assessment of the primary stability of two cementless femoral knee components

Filter options

Publication date

Content availability

Publication type

Publication language

Keywords

Data set

INFONA - science communication portal

Search results

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Publication language

Keywords

Data set

Reporting an error / abuse

Sending the report failed

Accessibility options