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Hua X, Li J. CMM‐based method for assessing the volume change of retrieved polyethylene cups in MoP total hip replacements. BIOSURFACE AND BIOTRIBOLOGY 2020. [DOI: 10.1049/bsbt.2019.0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Xijin Hua
- Department of Health Sciences and TechnologyInstitute for BiomechanicsETH ZurichZurichSwitzerland
| | - Junyan Li
- School of Science & TechnologyDepartment of Design Engineering & MathsMiddlesex University LondonLondonUK
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Bergiers S, Hothi H, Richards R, Henckel J, Hart A. Quantifying the bearing surface wear of retrieved hip replacements. BIOSURFACE AND BIOTRIBOLOGY 2019. [DOI: 10.1049/bsbt.2018.0034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Sean Bergiers
- Division of Surgery & Interventional ScienceInstitute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK
| | - Harry Hothi
- Division of Surgery & Interventional ScienceInstitute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK
| | - Robin Richards
- Division of Surgery & Interventional ScienceInstitute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK
| | - Johann Henckel
- Division of Surgery & Interventional ScienceInstitute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK
| | - Alister Hart
- Division of Surgery & Interventional ScienceInstitute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK
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Comparison of CMM and Micro-CT Volumetric Analysis of Polyethylene Tibial Knee Inserts in Total Knee Replacement. INT J POLYM SCI 2018. [DOI: 10.1155/2018/3601480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ultrahigh molecular weight polyethylene (UHMWPE) bearings are used widely in orthopaedic joint replacement as a prominent material for improving the longevity, which is dramatically influenced by wear of polyethylene. Polyethylene tibial knee components from knee simulators under two different input conditions were analyzed using CMM and Micro-CT measurement techniques for volumetric loss with gravimetric measurement as reference. Based on the coordinates and image slices obtained, the surface curve fitting and image digitization methodology were used for the creation of nominal “original” surface in the case of no prewear data provided. The comparison results indicate that gravimetric remains the gold standard and the CMM measurement took less time and had better precision, accuracy, and repeatability compared to Micro-CT measurement technique.
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