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Prosthetic liner wear in total hip replacement: a longitudinal 13-year study with computed tomography.
Karolinska Institutet at Karolinska University Hospital Solna. (Department of Molecular Medicine and Surgery)ORCID iD: 0000-0002-4280-1178
Karolinska Institutet, Sweden. (Department of Molecular Medicine and Surgery, Section of Orthopaedics and Sport Medicine)ORCID iD: 0000-0002-1777-5764
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).ORCID iD: 0000-0002-6066-746X
New York University, Department of Radiology. (Nuclear Medicine)ORCID iD: 0000-0002-2442-1622
2018 (English)In: Skeletal Radiology, ISSN 0364-2348, E-ISSN 1432-2161, p. 1-5Article in journal (Refereed) Epub ahead of print
Abstract [en]

This case report follows a woman who had a total hip replacement in 1992 when she was 45 years old. Six serial computed tomography (CT) examinations over a period of 13 years provided information that allowed her revision surgery to be limited to liner replacement as opposed to replacement of the entire prosthesis. Additionally, they provided data that ruled out the presence of osteolysis and indeed none was found at surgery. In 2004, when the first CT was performed, the 3D distance the femoral head had penetrated into the cup was determined to be 2.6 mm. By 2017, femoral head penetration had progressed to 5.0 mm. The extracted liner showed wear at the thinnest part to be 5.5 mm, as measured with a micrometer. The use of modern CT techniques can identify problems, while still correctable without major surgery. Furthermore, the ability of CT to assess the direction of wear revealed that the liner wear changed from the cranial to dorsal direction.

Place, publisher, year, edition, pages
Springer, 2018. p. 1-5
Keyword [en]
Computed tomography, Hip replacement, Prosthetic liner wear
National Category
Orthopaedics Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:kth:diva-221793DOI: 10.1007/s00256-018-2878-8ISI: 000430833900019PubMedID: 29362844Scopus ID: 2-s2.0-85040863041OAI: oai:DiVA.org:kth-221793DiVA, id: diva2:1177431
Note

QC 20180125

Available from: 2018-01-25 Created: 2018-01-25 Last updated: 2018-05-15Bibliographically approved

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Weidenhielm, LarsOlivecrona, HenrikMaguire Jr., Gerald Q.Noz, Marilyn E.
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