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The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee

BACKGROUND AND PURPOSE: It is unclear whether osteoarthritis (OA) of the knee is seen better in standing flexion position radiographs than in the standing extended view. We assessed the value of standing flexion views. PATIENTS AND METHODS: We retrospectively evaluated 1,090 radiographs of 545 conse...

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Autores principales: Niinimäki, Tuukka, Ojala, Risto, Niinimäki, Jaakko, Leppilahti, Juhana
Formato: Texto
Lenguaje:English
Publicado: Informa Healthcare 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2876837/
https://www.ncbi.nlm.nih.gov/pubmed/20450420
http://dx.doi.org/10.3109/17453674.2010.483989
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author Niinimäki, Tuukka
Ojala, Risto
Niinimäki, Jaakko
Leppilahti, Juhana
author_facet Niinimäki, Tuukka
Ojala, Risto
Niinimäki, Jaakko
Leppilahti, Juhana
author_sort Niinimäki, Tuukka
collection PubMed
description BACKGROUND AND PURPOSE: It is unclear whether osteoarthritis (OA) of the knee is seen better in standing flexion position radiographs than in the standing extended view. We assessed the value of standing flexion views. PATIENTS AND METHODS: We retrospectively evaluated 1,090 radiographs of 545 consecutive knees with non-traumatic knee pain, comparing standing fixed flexion view (FFV) and standing extended view (SEV). OA was classified according to the Kellgren-Lawrence (KL) radiographic grading scale and joint space widths were measured. RESULTS: Medial joint space width was lower on average in the FFV, with the greatest difference in KL II knees. Medial full-thickness loss of cartilage was also seen more often in the FFVs of knees with moderate OA (KL II–III) than in the SEVs (6% vs. 19%). INTERPRETATION: Using FFV, there is no need to measure the exact knee flexion angle to use fluoroscopy. In earlier studies, the FFV has been found to be reproducible and easy to use in clinical practice. We recommend using flexion views when deciding the appropriate type of intervention in patients with OA. Full-thickness loss of cartilage in particular is better seen in the flexion view, which may be helpful if planning unicompartmental knee arthroplasty.
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spelling pubmed-28768372010-09-03 The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee Niinimäki, Tuukka Ojala, Risto Niinimäki, Jaakko Leppilahti, Juhana Acta Orthop Research Article BACKGROUND AND PURPOSE: It is unclear whether osteoarthritis (OA) of the knee is seen better in standing flexion position radiographs than in the standing extended view. We assessed the value of standing flexion views. PATIENTS AND METHODS: We retrospectively evaluated 1,090 radiographs of 545 consecutive knees with non-traumatic knee pain, comparing standing fixed flexion view (FFV) and standing extended view (SEV). OA was classified according to the Kellgren-Lawrence (KL) radiographic grading scale and joint space widths were measured. RESULTS: Medial joint space width was lower on average in the FFV, with the greatest difference in KL II knees. Medial full-thickness loss of cartilage was also seen more often in the FFVs of knees with moderate OA (KL II–III) than in the SEVs (6% vs. 19%). INTERPRETATION: Using FFV, there is no need to measure the exact knee flexion angle to use fluoroscopy. In earlier studies, the FFV has been found to be reproducible and easy to use in clinical practice. We recommend using flexion views when deciding the appropriate type of intervention in patients with OA. Full-thickness loss of cartilage in particular is better seen in the flexion view, which may be helpful if planning unicompartmental knee arthroplasty. Informa Healthcare 2010-06 2010-05-21 /pmc/articles/PMC2876837/ /pubmed/20450420 http://dx.doi.org/10.3109/17453674.2010.483989 Text en Copyright: © Nordic Orthopedic Federation http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the source is credited.
spellingShingle Research Article
Niinimäki, Tuukka
Ojala, Risto
Niinimäki, Jaakko
Leppilahti, Juhana
The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
title The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
title_full The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
title_fullStr The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
title_full_unstemmed The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
title_short The standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
title_sort standing fixed flexion view detects narrowing of the joint space better than the standing extended view in patients with moderate osteoarthritis of the knee
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2876837/
https://www.ncbi.nlm.nih.gov/pubmed/20450420
http://dx.doi.org/10.3109/17453674.2010.483989
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