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Conference Paper: Polyethylene Wear before and after Isolated Liner Exchange in Anatomic Modular Locking Total Hip Arthroplasty

TitlePolyethylene Wear before and after Isolated Liner Exchange in Anatomic Modular Locking Total Hip Arthroplasty
Authors
Issue Date2013
PublisherHong Kong Academy of Medicine Press.
Citation
The 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), Hong Kong, China, 23-24 November 2013. In the Abstracts of the 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), 2013, p. 36, abstract no. 4.5 How to Cite?
AbstractIntroduction: This study compared the linear penetration rate of conventional polyethylene (CONPE) and highly crosslinked polyethylene (HXLPE) before and after isolated liner exchange in a group of patients with anatomic modular locking (AML) total hip arthroplasty (THA). Methods: A total of 26 patients (13 men, 13 women) with 29 AML THAs received liner and hip ball exchange due to conventional PE wear. The exchanged liners were highly cross-linked in nature. All hip balls were 28 mm in diameter. Annual X-rays were measured for linear penetration and osteolysis. Results: The mean (± standard deviation) age was 44.8 ± 13.4 years at the time of primary THA and 56.9 ± 14.5 years at revision. The mean time interval between the primary and revision THA was 12.1 ± 3.2 years. The mean follow-up time after revision was 5.8 ± 1.8 years. The mean creep of CONPE and HXLPE occurred in the first year were 0.44 ± 0.37 mm and 0.38 ± 0.35 mm, respectively (p = 0.013). The mean annual linear penetration rates from second year onwards were 0.31 ± 0.40 mm and 0.09 ± 0.22 mm in the CONPE and HXLPE groups, respectively (p = 0.04). All THAs with CONPE showed osteolysis on the radiographs before the revision. No HXLPE showed osteolysis at the last follow-up. Conclusion: The CONPE had significantly higher wear rate compared with HXLPE. The HXLPE liner showed satisfactory liner penetration rate after isolated liner exchange procedures.
DescriptionConference Theme: Defying the Aging Spine
Concurrent Free Papers 4: Hips and Knees I
Persistent Identifierhttp://hdl.handle.net/10722/204329

 

DC FieldValueLanguage
dc.contributor.authorYan, CHen_US
dc.contributor.authorNg, FYen_US
dc.contributor.authorChan, PKen_US
dc.contributor.authorChiu, PKYen_US
dc.date.accessioned2014-09-19T22:41:14Z-
dc.date.available2014-09-19T22:41:14Z-
dc.date.issued2013en_US
dc.identifier.citationThe 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), Hong Kong, China, 23-24 November 2013. In the Abstracts of the 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), 2013, p. 36, abstract no. 4.5en_US
dc.identifier.urihttp://hdl.handle.net/10722/204329-
dc.descriptionConference Theme: Defying the Aging Spine-
dc.descriptionConcurrent Free Papers 4: Hips and Knees I-
dc.description.abstractIntroduction: This study compared the linear penetration rate of conventional polyethylene (CONPE) and highly crosslinked polyethylene (HXLPE) before and after isolated liner exchange in a group of patients with anatomic modular locking (AML) total hip arthroplasty (THA). Methods: A total of 26 patients (13 men, 13 women) with 29 AML THAs received liner and hip ball exchange due to conventional PE wear. The exchanged liners were highly cross-linked in nature. All hip balls were 28 mm in diameter. Annual X-rays were measured for linear penetration and osteolysis. Results: The mean (± standard deviation) age was 44.8 ± 13.4 years at the time of primary THA and 56.9 ± 14.5 years at revision. The mean time interval between the primary and revision THA was 12.1 ± 3.2 years. The mean follow-up time after revision was 5.8 ± 1.8 years. The mean creep of CONPE and HXLPE occurred in the first year were 0.44 ± 0.37 mm and 0.38 ± 0.35 mm, respectively (p = 0.013). The mean annual linear penetration rates from second year onwards were 0.31 ± 0.40 mm and 0.09 ± 0.22 mm in the CONPE and HXLPE groups, respectively (p = 0.04). All THAs with CONPE showed osteolysis on the radiographs before the revision. No HXLPE showed osteolysis at the last follow-up. Conclusion: The CONPE had significantly higher wear rate compared with HXLPE. The HXLPE liner showed satisfactory liner penetration rate after isolated liner exchange procedures.-
dc.languageengen_US
dc.publisherHong Kong Academy of Medicine Press.-
dc.relation.ispartofAnnual Congress of the Hong Kong Orthopaedic Association (HKOA)en_US
dc.rightsAnnual Congress of the Hong Kong Orthopaedic Association (HKOA). Copyright © Hong Kong Academy of Medicine Press.-
dc.titlePolyethylene Wear before and after Isolated Liner Exchange in Anatomic Modular Locking Total Hip Arthroplastyen_US
dc.typeConference_Paperen_US
dc.identifier.emailYan, CH: yanchoi@hku.hken_US
dc.identifier.emailNg, FY: fyng@hkucc.hku.hken_US
dc.identifier.emailChan, PK: cpk464@hku.hken_US
dc.identifier.emailChiu, PKY: pkychiu@hkucc.hku.hken_US
dc.identifier.authorityYan, CH=rp00303en_US
dc.identifier.authorityChiu, PKY=rp00379en_US
dc.identifier.hkuros235770en_US
dc.identifier.hkuros240329-
dc.identifier.spage36, abstract no. 4.5en_US
dc.identifier.epage36, abstract no. 4.5en_US
dc.publisher.placeHong Kong, China-

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