| The correct rotation of the femoral component in patellofemoral replacement: A laboratory assessment of a surgical technique. | |
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MedLine Citation:
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PMID: 23188904 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Ensuring correct rotation of the femoral component is a challenging aspect of patellofemoral replacement surgery. Rotation equal to the epicondylar axis or marginally more external rotation is acceptable. Internal rotation is associated with poor outcomes. This paper comprises two studies evaluating the use of the medial malleolus as a landmark to guide rotation. We used 100 lower-leg anteroposterior radiographs to evaluate the reliability of the medial malleolus as a landmark. Assessment was made of the angle between the tibial shaft and a line from the intramedullary rod entry site to the medial malleolus. The femoral cut was made in ten cadaver knees using the inferior tip of the medial malleolus as a landmark for rotation. Rotation of the cut relative to the anatomical epicondylar axis was assessed using CT. The study of radiographs found the position of the medial malleolus relative to the tibial axis is consistent. Using the inferior tip of the medial malleolus in the cadaver study produced a mean external rotation of 1.6° (0.1° to 3.7°) from the anatomical epicondylar axis. Using the inferior tip of the medial malleolus to guide the femoral cutting jig avoids internal rotation and introduces an acceptable amount of external rotation of the femoral component. |
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Authors:
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D A Clark; N Upadhyay; G Gillespie; C Wakeley; J D Eldridge |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of bone and joint surgery. British volume Volume: 94 ISSN: 0301-620X ISO Abbreviation: J Bone Joint Surg Br Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-11-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375355 Medline TA: J Bone Joint Surg Br Country: England |
Other Details:
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Languages: eng Pagination: 1637-40 Citation Subset: AIM; IM |
Affiliation:
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Bristol Royal Infirmary, Orthopaedic Department, Queen's Building, Marlborough Street, Bristol BS2 8HY, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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