Biomechanical Evaluation of the Fatigue Performance, the Taper Corrosion and the Metal Ion Release of a Dual Taper Hip Prosthesis under Physiological Environmental Conditions

Baxmann, M.; Pfaff, Andreas; Schilling, Christoph; Grupp, Thomas M.; Morlock, Michael M.

doi:10.1016/j.biotri.2017.07.002

Cited by 20 publications

(16 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reason for this is, that a not firmly fixed modular neck/stem taper connection is of high risk for mechanically assisted crevice corrosion. A loosened neck/stem taper connection can be originated during index surgery by an insufficient assembling force or can be caused by macroscopic visible material loss at the medial neck taper interface due to corrosion resulting in a toggling of the modular CoCr neck relatively to the Ti alloy stem [79].…”

Section: Decision Making Model For Asymptomatic Dual Taper Stems In Cmentioning

confidence: 99%

“…In addition, the restoration of the centre of rotation and related ligament balancing during trial head reduction possibly requires a higher offset or longer neck length [4,7,80,81]. Increasing the offset or neck length to adapt for a different cup orientation or sufficient soft tissue balancing may create a more demanding biomechanical loading situation [7,16,32,[82][83][84] for the so far asymptomatic dual taper neck adapter, possibly triggering MACC [17,32,79]. Therefore an indication may be given for revision of the modular stem.…”

Section: Decision Making Model For Asymptomatic Dual Taper Stems In Cmentioning

confidence: 99%

See 1 more Smart Citation

How to Proceed with Asymptomatic Modular Dual Taper Hip Stems in the Case of Acetabular Revision

Grupp

Baxmann²,

Jansson

et al. 2020

Materials

View full text Add to dashboard Cite

How to proceed with a clinically asymptomatic modular Metha® Ti alloy stem with dual taper CoCr neck adapter in case of acetabular revision? To systematically answer this question the status of research and appropriate diagnostic methods in context to clinically symptomatic and asymptomatic dual taper stem-neck couplings has been evaluated based on a systematic literature review. A retrieval analysis of thirteen Metha® modular dual taper CoCr/Ti alloy hip stems has been performed and a rational decision making model as basis for a clinical recommendation was developed. From our observations we propose that in cases of acetabular revision, that for patients with a serum cobalt level of > 4 µg/L and a Co/Cr ratio > 3.6, the revision of the modular dual taper stem may be considered. Prior to acetabular revision surgery a systematic diagnostic evaluation should be executed, using specific tests such as serum metal (Co, Cr) ion analysis, plain antero-posterior and lateral radiographs and cross-sectional imaging modalities (Metal Artefact Reduction Sequence Magnetic Resonance Imaging). For an asymptomatic Metha® dual taper Ti alloy/CoCr stem-neck coupling at the stage of acetabular revision careful clinical decision making according to the proposed model should be followed and overreliance on any single examination should be avoided, considering the complete individual differential diagnosis and patient situation.

show abstract

Section: Decision Making Model For Asymptomatic Dual Taper Stems In Cmentioning

confidence: 99%

Section: Decision Making Model For Asymptomatic Dual Taper Stems In Cmentioning

confidence: 99%

How to Proceed with Asymptomatic Modular Dual Taper Hip Stems in the Case of Acetabular Revision

Grupp

Baxmann²,

Jansson

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…In addition, a second electrolyte containing 10 g/l FeCl 3 in Ringer's solution (FeCl 3 ) (B. Braun AG, Melsungen, Germany) was used for electrochemical tests of polished, deep-rolled and microblasted Ti discs. The FeCl 3 -containing electrolyte has a low pH of 1.8 and a higher concentration of Cl − ions and was used as corrosion accelerating environment [26,27]. Electrochemical testing was done at 37 • C and by using aerated electrolytes.…”

Section: Electrochemical Testingmentioning

confidence: 99%

Corrosion Behavior of Surface-Treated Metallic Implant Materials

et al. 2020

View full text Add to dashboard Cite

Corrosion of taper connections in total hip arthroplasty remains of concern, as particles and ions generated by corrosive processes can cause clinical problems such as periprosthetic osteolysis or adverse reaction to metallic debris. Mechanical surface treatments that introduce compressive residual stresses (RSs) in metallic materials can lead to a better performance in terms of fretting and fatigue and may lower the susceptibility to corrosion. The study investigates the impact of mechanical surface treatments on the corrosion behavior of metallic biomaterials. Compressive RSs were introduced by deep rolling and microblasting in Ti6Al4V and CoCrMo samples. Polished samples served as reference. Corrosion behavior was characterized by repeated anodic polarization. Residual stresses of up to about −900 MPa were introduced by deep rolling with a reach in depth of approximately 500 µm. Microblasting led to compressive RSs up to approximately −800 and −600 MPa for Ti6Al4V and CoCrMo, respectively, in the immediate vicinity of the surface. For Ti6Al4V, microblasting resulted in decreased corrosion resistance with lower breakdown potentials and/or increased passive current densities in comparison to the polished and deep-rolled samples. The corrosion behavior of CoCrMo on the other hand was not affected by the mechanical surface treatments.

show abstract

“…Thus far, loosening studies indicate the importance of the dimensions of hip endoprosthesis [3], applied materials [4] and body characteristics of patients [5]. Another significant cause of failures, fatigue fractures, may happen due to inadequate endoprosthesis [6] and tribological processes [7]. In addition, inadequate dimensions and materials choice may make unpleasant changes for patients in terms of the hip joint squeaking [8].…”

Section: Introductionmentioning

confidence: 99%

Design of Custom Made Prosthesis of the Hip

et al. 2019

View full text Add to dashboard Cite

Replacement of a natural hip joint with an artificial is one of the most commonly used surgical procedures in orthopaedic surgery. This paper describes the methodology of the hip joint prosthesis design, which presents the foundation for the automation of all stages of the development of custom-made prostheses. A general mathematical model based mostly on B-spline surfaces is used in order to define the prosthesis geometry. In order to verify the method, a software solution was developed and used for designing prostheses based on ten diagnostic images obtained by various methods. The results of the analysis of the ten designed prostheses, out of which five manufactured, show that deviations from the desired values are less than the errors caused by diagnostic imaging.

show abstract

Biomechanical Evaluation of the Fatigue Performance, the Taper Corrosion and the Metal Ion Release of a Dual Taper Hip Prosthesis under Physiological Environmental Conditions

Cited by 20 publications

References 53 publications

How to Proceed with Asymptomatic Modular Dual Taper Hip Stems in the Case of Acetabular Revision

How to Proceed with Asymptomatic Modular Dual Taper Hip Stems in the Case of Acetabular Revision

Corrosion Behavior of Surface-Treated Metallic Implant Materials

Design of Custom Made Prosthesis of the Hip

Contact Info

Product

Resources

About