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Conference Paper: Polyethylene wear before and after isolated liner exchange in anatomic modular locking Total Hip Arthroplasty
Title | Polyethylene wear before and after isolated liner exchange in anatomic modular locking Total Hip Arthroplasty |
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Authors | |
Issue Date | 2013 |
Publisher | Hong Kong Academy of Medicine Press. |
Citation | The 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA 2013), Hong Kong, China, 23-24 November 2013. In Conference Abstracts, 2013, p. 36, abstract no. 4.5 How to Cite? |
Abstract | Introduction: 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. |
Description | Conference Theme: Defying the Aging Spine Concurrent Free Papers 4: Hips and Knees I |
Persistent Identifier | http://hdl.handle.net/10722/204329 |
DC Field | Value | Language |
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dc.contributor.author | Yan, CH | en_US |
dc.contributor.author | Ng, FY | en_US |
dc.contributor.author | Chan, PK | en_US |
dc.contributor.author | Chiu, PKY | en_US |
dc.date.accessioned | 2014-09-19T22:41:14Z | - |
dc.date.available | 2014-09-19T22:41:14Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.citation | The 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA 2013), Hong Kong, China, 23-24 November 2013. In Conference Abstracts, 2013, p. 36, abstract no. 4.5 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/204329 | - |
dc.description | Conference Theme: Defying the Aging Spine | - |
dc.description | Concurrent Free Papers 4: Hips and Knees I | - |
dc.description.abstract | Introduction: 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.language | eng | en_US |
dc.publisher | Hong Kong Academy of Medicine Press. | - |
dc.relation.ispartof | Annual Congress of the Hong Kong Orthopaedic Association, HKOA 2013 | en_US |
dc.title | Polyethylene wear before and after isolated liner exchange in anatomic modular locking Total Hip Arthroplasty | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Yan, CH: yanchoi@hku.hk | en_US |
dc.identifier.email | Ng, FY: fyng@hkucc.hku.hk | en_US |
dc.identifier.email | Chan, PK: cpk464@hku.hk | en_US |
dc.identifier.email | Chiu, PKY: pkychiu@hkucc.hku.hk | en_US |
dc.identifier.authority | Yan, CH=rp00303 | en_US |
dc.identifier.authority | Chiu, PKY=rp00379 | en_US |
dc.identifier.hkuros | 235770 | en_US |
dc.identifier.hkuros | 240329 | - |
dc.identifier.spage | 36, abstract no. 4.5 | en_US |
dc.identifier.epage | 36, abstract no. 4.5 | en_US |
dc.publisher.place | Hong Kong | - |