Bearing surface
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Recent updates for biomaterials used in total hip arthroplasty Open
Background Total hip arthroplasty (THA) is probably one of the most successful surgical interventions performed in medicine. Through the revolution of hip arthroplasty by principles of low friction arthroplasty was introduced by Sir John C…
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The Effect of Bottom Profile Dimples on the Femoral Head on Wear in Metal-on-Metal Total Hip Arthroplasty Open
Wear and wear-induced debris is a significant factor in causing failure in implants. Reducing contact pressure by using a textured surface between the femoral head and acetabular cup is crucial to improving the implant’s life. This study p…
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Surface Texturing of Prosthetic Hip Implant Bearing Surfaces: A Review Open
More than 300,000 total hip replacement surgeries are performed in the United States each year to treat degenerative joint diseases that cause pain and disability. The statistical survivorship of these implants declines significantly after…
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Periprosthetic Joint Infection in Hip Arthroplasty: Is There an Association Between Infection and Bearing Surface Type? Open
Level III, therapeutic study.
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Do the Reasons for Ceramic-on-ceramic Revisions Differ From Other Bearings in Total Hip Arthroplasty? Open
Level III, therapeutic study.
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Bearing surfaces in primary total hip arthroplasty Open
Total hip arthroplasty (THA) is widely considered one of the most successful surgical procedures in orthopaedics. It is associated with high satisfaction rates and significant improvements in quality of life following surgery. On the other…
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Use of Natural Language Processing Algorithms to Identify Common Data Elements in Operative Notes for Total Hip Arthroplasty Open
Update This article was updated on December 6, 2019, because of a previous error. On page 1936, in Table VII, “Performance of the Bearing Surface Algorithm,” the row that had read “Bearing surface predicted by algorithm” now reads “Bearing…
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Tribochemical Characterization and Tribocorrosive Behavior of CoCrMo Alloys: A Review Open
Orthopedic implants first started out as an all-metal hip joint replacement. However, poor design and machinability as well as unsatisfactory surface finish subjected the all-metal joint replacement to being superseded by a polyethylene be…
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Investigations for vibration and friction torque behaviors of thrust ball bearing with self-driven textured guiding surface Open
In order to improve the starved lubrication condition of rolling bearings, three kinds of textures, namely dimple, groove texture, and gradient groove texture, were developed on the guiding surface of thrust ball bearings in this study. Th…
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The effect of bearing type on the outcome of total hip arthroplasty Open
Background and purpose — Alternative bearing surfaces such as ceramics and highly crosslinked polyethylene (HXLPE) were developed in order to further improve implant performance of total hip arthroplasties (THAs). Whether these alternative…
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Validation of a novel Kinect‐based device for 3D scanning of the foot plantar surface in weight‐bearing Open
Background Advancements in additive manufacturing, along with new 3D scanning tools, are increasingly fulfilling the technological need for custom devices in personalized medicine. In podiatry and in the footwear industry, custom orthotic …
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Thermoelastohydrodynamic analysis of misaligned bearings with texture on journal surface under high-speed and heavy-load conditions Open
Hydrodynamic journal bearings are used to support the planetary gears in the transmission system of a Geared Turbo Fan engine, and they operate under severe working conditions, such as misalignment, high speed, and heavy load. Surface text…
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Fatal Cobalt Toxicity after a Non‐Metal‐on‐Metal Total Hip Arthroplasty Open
This case illustrates the potential for systemic cobalt toxicity in non‐metal‐on‐metal bearings and its potentially devastating consequences. We present a 71‐year‐old male with grinding sensations in his right hip following ceramic‐on‐cera…
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The Analysis of Dimple Geometry on Artificial Hip Joint to the Performance of Lubrication Open
This research analyzed the effect of applied surface texturing on bearing component of the artificial hip joint due to lubrication performance. The main contribution of the paper was explaining the significant role of adding dimples in art…
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Manufacturing, oxidation, mechanical properties and clinical performance of highly cross-linked polyethylene in total hip arthroplasty Open
Ultra-high molecular weight polyethylene (UHMWPE) continues to be the gold standard bearing surface in total hip arthroplasty (THA) for nearly 5 decades. Highly cross-linked UHMWPE (HXLPE) was adapted for routine use in the early 2000s to …
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Tribology of total hip arthroplasty prostheses Open
Articulating components should minimise the generation of wear particles in order to optimize long-term survival of the prosthesis. A good understanding of tribological properties helps the orthopaedic surgeon to choose the most suitable b…
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Effect of Bearing Surface on Survival of Cementless and Hybrid Total Hip Arthroplasty Open
Background: Modern bearing surface options have increased implant survivorship after total hip arthroplasty (THA). We utilized data from the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man (NJR) to analyze …
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Effects of thermal and elastic deformations on lubricating properties of the textured journal bearing Open
Hydrodynamic journal bearing is an important part of rotary machine and faces many challenges such as high rotating speed, heavy specific pressure, and large temperature rise with the development of industry. These challenges lead to notab…
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Experimental and Numerical Analysis of Conical Shape Hydrodynamic Journal Bearing With Partial Texturing Open
In this paper, the numerical and experimental analysis is carried out for investigating the performance characteristics of conical shape hydrodynamic journal bearing (CSHJB) through partial texturing (ellipsoidal shape dimples). The numeri…
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Ceramic Bearings with Titanium Adapter Sleeves Implanted During Revision Hip Arthroplasty Show Minimal Fretting or Corrosion: A Retrieval Analysis Open
Background The BIOLOX® option system, consisting of a BIOLOX® delta ceramic femoral head with a titanium alloy adapter sleeve, is being increasingly utilized in revision hip arthroplasty. The sleeve protects the ceramic head from fracture …
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What Is the Long-term Survival for Primary THA With Small-head Metal-on-metal Bearings? Open
Background Large-head metal-on-metal (MoM) bearing hip replacements have been shown to have a much higher rate of revision than other bearing surfaces. However, small-head (≤ 32 mm) MoM bearing surfaces have been in use for many years with…
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Oxidation, Damage Mechanisms, and Reasons for Revision of Sequentially Annealed Highly Crosslinked Polyethylene in Total Knee Arthroplasty Open
We observed evidence of in vivo oxidation in both HXLPE and control tibial inserts. We found no association between the levels of oxidation and the clinical performance of the HXLPE tibial components. The findings of this study document th…
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The Biotribology of PEEK-on-HXLPE Bearings Is Comparable to Traditional Bearings on a Multidirectional Pin-on-disk Tester Open
The in vitro pin-on-disk wear resistance of all-polymer bearings incorporating PEEK-on-HXLPE warrants further investigation using joint simulator testing for their validation as useful, metal-free alternatives to traditional CoCr-on-HXLPE …
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Influence of bearing raceway surface topography on the level of generated vibration as an example of operational heredity Open
In this paper, an influence of surface topography of ball rolling bearing raceways of the vibration values has been examined. Experiments have been preferment using series of bearing types 6304. Surface topography of bearing raceways has b…
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Osseointegration of titanium implants with a novel silver coating under dynamic loading Open
Postoperative implant-associated infections are a severe complication in orthopaedics and trauma surgery. To address this problem, a novel implant coating was recently developed, which allows for the release of low concentrations of bacter…
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The Epidemiology and National Trends of Bearing Surface Usage in Primary Total Hip Arthroplasty in Korea Open
Total hip arthroplasty (THA) is a treatment option for patients with advanced degenerative joint disease.Despite advances in THA, revision surgeries are necessitated by the long-term failure of implants using the conventional bearing mater…
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Surface texturing effect comparative analysis in the hydrodynamic journal bearings Open
\n The journal bearing is a complex system with high film convergence and with cavitation hydrodynamic phenomena. The surface texturation influence study on journal bearing performances requires unavoidably experimental investigations foll…
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No Difference in Reoperations at 2 Years Between Ceramic-on-metal and Metal-on-metal THA: A Randomized Trial Open
Level I, therapeutic study.
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Oxidized Zirconium Total Knee Arthroplasty Implant Failure in a Patient With Knee Instability Open
Oxidized zirconium was introduced as an alternative bearing surface to decrease polyethylene wear and reduce aseptic mechanical failure of hip and knee arthroplasties. Oxidized zirconium combines the strength of a metal with wear propertie…
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Determination of a Friction Coefficient for THA Bearing Couples Open
The study showed that both the friction coefficient and the friction moment are affected more by the combination of materials than by the diameter of a femoral head. The best results were achieved in ceramic-on-ceramic implants.