Ten different hip resurfacing systems: biomechanical analysis of design and material properties

Heisel, Christian; Kleinhans, J.A.; Menge, M.; Kretzer, Jan Philippe

doi:10.1007/s00264-008-0607-y

Cited by 49 publications

(32 citation statements)

References 15 publications

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“…The head and cup are not perfectly spherical and smooth; these irregularities are defined as deviation of roundness and surface roughness and range from 1-5 mm and 0.01-0.03 mm, respectively. 9 Carbon content and manufacturing method (wrought or cast) influence the metallic microstructure and mechanical properties. With increasing carbon content, the carbides (very hard metal-carbon compounds) increase in amount and size.…”

Section: Methodsmentioning

confidence: 99%

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A meta‐analysis of design‐ and manufacturing‐related parameters influencing the wear behavior of metal‐on‐metal hip joint replacements

Kretzer

Kleinhans

Jakubowitz

et al. 2009

Journal Orthopaedic Research

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This article aims to clarify the influence of design-and manufacturing-related parameters on wear of metal-on-metal (MoM) joint bearings. A database search for publications on wear simulator studies of MoM bearings was performed. The results of published studies were normalized; groups with individual parameters were defined and analyzed statistically. Fifty-six investigations studying a total of 200 implants were included in the analysis. Clearance, head size, carbon content, and manufacturing method were analyzed as parameters influencing MoM wear. This meta-analysis revealed a strong influence of clearance on running-in wear for implants of 36-mm diameter and an increase in steady-state wear of heat treated components. ß

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Section: Methodsmentioning

confidence: 99%

“…Similar observations were reported using hip simulators. 9,38 Two other simulator studies reported less wear for cast compared to wrought implants. 20,33 Dowson et al 11 did not observe a difference between as-cast and wrought implants in a hip simulator.…”

Section: Meta-analysis Of Design and Manufacturing-related Paramentermentioning

confidence: 99%

A meta‐analysis of design‐ and manufacturing‐related parameters influencing the wear behavior of metal‐on‐metal hip joint replacements

Kretzer

Kleinhans

Jakubowitz

et al. 2009

Journal Orthopaedic Research

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“…It is hoped that, as these modern techniques evolve and become more user-friendly, reduced surgeon error in implant positioning should decrease the incidence of wear-related failures. The many nuances [32] of implant design and materials constitute the third risk factor for resurfacing failures. Our past experience [19] has shown that changes to materials processing can be detrimental to implant survivorship.…”

Section: Discussionmentioning

confidence: 99%

Indications and results of hip resurfacing

McMinn

Daniel

Ziaee

et al. 2010

International Orthopaedics (SICOT)

107

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The best indication for hip resurfacing is a young active patient with severe hip arthritis, good hip morphology and reasonable bone quality. With revision of either component for any reason as the endpoint, there were 68 revisions in our series of 3,095 consecutive Birmingham Hip Resurfacings (BHR) (1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009), including all diagnoses in all ages. This equates to a revision rate of 2.2% and survivorships of 99, 97 and 96% at five, ten and 13 years, respectively. In patients under 55 years with osteoarthritis, the survivorship is 99 and 98% at ten and 13 years. These results provide medium-term evidence that BHR when performed well in properly selected patients offers excellent outcomes and implant survivorship. Small changes to implant materials and design can affect joint function and survivorship significantly as seen from the withdrawal of certain resurfacing devices recently from clinical use. The clinical history of one device cannot be extrapolated to other devices.

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“…According to standards, the roughness (Ra) and roughness must lie within 0.02-0.036 μm and-and 0.9-7.3μm respectively to keep wear within acceptable limits. This is a critical factor in the material, construction, technology development and optimization of the acetabular shell [10,11]. Investigation on Co-Cr-Mo showed various factors such as clearance, head size, carbon content, and manufacturing method had an influence on metal-on-metal wear behaviour.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stress Flow Analysis in Fabrication of Acetabular Shells Using SLM

Khorasani¹,

Gibson²,

Goldberg³

et al. 2017

KEG

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<p>Additive Manufacturing (AM), more popularly known as 3D Printing, is a process for producing functional artifacts by adding layers of materials from data generated directly from 3D solid CAD models. Additive Manufacturing (AM) is the formalized term for what used to be called Rapid Prototyping and what is commonly referred to as 3D Printing. The key to how AM works is that parts are made by adding layers of material; each layer corresponding to a thin cross-section of the part derived from the original CAD data. Although most AM machines produce parts using polymers, there are an increasing number of machines that can directly fabricate in metals. The majority of these machines fabricate from raw material in powder form using a directed energy beam to create a local melt zone. Total hip replacement is recommended for people who have medical issues related to excessive wear of the acetabular, osteoarthritis, accident or age. Researches have shown that large numbers of hip arthroplasties (where the articular surface of a musculoskeletal joint is replaced), hip remodelling, or realignment are carried out annually and will increase in the next few decades. Manufacturing of acetabular shells by using AM is a promising and emerging method that has a great potential to improve public health. Lost wax casting or investment casting is currently used to produce acetabular shells followed by lengthy and complex secondary processes such as machining and polishing. Living organs and medical models have intricate 3D shapes that are challenging to identity in X-ray CT images. These images are used for preparing treatment plans to improve the quality of the surgeries regarding waiting and surgery time per procedure and care regime. For instance, a limited number of hip replacement procedures can be carried out on each acetabulum due to a decrease of bone thickness. Rapid prototyping is a suitable treatment planning tool in complex cases to enhance the quality of surgical procedure and provide long-term stability that can be used to customize the shape and size of the acetabular shell. In this paper, to analyse the manufacturing of a prosthetic acetabular shell, built-up lines resulting from a thermal stress flow and process stopping during the selective laser melting (SLM) AM process, with regarding Gibbs free energy, interfacial energy, and equilibrium temperature will be discussed. Geometrical measurements showed 1.59% and 0.27% differences between the designed and manufactured prototype for inside and outside diameter respectively. Experimental results showed that thermal stress flow in outer surfaces are compressive, but for inner surfaces are tensile, so built-up lines in inner and outer surfaces appear as a groove and dent respectively. The results also indicate that SLM is an accurate and promising method for fabrication of acetabular cup.</p>

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Ten different hip resurfacing systems: biomechanical analysis of design and material properties

Cited by 49 publications

References 15 publications

A meta‐analysis of design‐ and manufacturing‐related parameters influencing the wear behavior of metal‐on‐metal hip joint replacements

A meta‐analysis of design‐ and manufacturing‐related parameters influencing the wear behavior of metal‐on‐metal hip joint replacements

Indications and results of hip resurfacing

Thermal Stress Flow Analysis in Fabrication of Acetabular Shells Using SLM

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