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Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis

BACKGROUND: Jumper’s knee is a type of tendinopathy affecting the distal insertion of the quadriceps tendon (25% of cases) or the patellar tendon. It has been shown that frontal-plane measurements, such as genu valgum, genu varum, an increased quadriceps angle, a protuberant tibial tuberosity, patel...

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Autores principales: Aksu, Neslihan, Atansay, Vefa, Karalök, Işık, Aksu, Taner, Kara, Ayhan Nedim, Hamzaoglu, Azmi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970196/
https://www.ncbi.nlm.nih.gov/pubmed/33796584
http://dx.doi.org/10.1177/2325967120985229
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author Aksu, Neslihan
Atansay, Vefa
Karalök, Işık
Aksu, Taner
Kara, Ayhan Nedim
Hamzaoglu, Azmi
author_facet Aksu, Neslihan
Atansay, Vefa
Karalök, Işık
Aksu, Taner
Kara, Ayhan Nedim
Hamzaoglu, Azmi
author_sort Aksu, Neslihan
collection PubMed
description BACKGROUND: Jumper’s knee is a type of tendinopathy affecting the distal insertion of the quadriceps tendon (25% of cases) or the patellar tendon. It has been shown that frontal-plane measurements, such as genu valgum, genu varum, an increased quadriceps angle, a protuberant tibial tuberosity, patella alta, and short hamstring muscles, may be related to jumper’s knee. PURPOSE: To investigate the effects of tibiofemoral rotational angles and patellofemoral (PF) angles on the development of jumper’s knee in professional folk dancers. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: We examined 26 dancers (16 male, 10 female) with knee pain using magnetic resonance imaging (MRI), for a total of 32 knees. Of the knees, 21 with quadriceps tendinopathy (QT) and 7 with patellar tendinopathy (PT) were detected. Using MRI scans, we measured PF angles (PF sulcus angle, lateral PF angle, patellar tilt angle, lateral trochlear inclination angle, lateral patellar tilt angle, and PF congruence angle) and tibiofemoral rotational angles (condylar twist angle, posterior condylar angle, femoral Insall angle, tibial Insall angle, posterior tibiofemoral angle, and angle between the Whiteside line and posterior femoral condylar line) and noted specifics such as patella alta, patella baja, and the Wiberg classification of the patellar shape between the patients with versus without QT and between patients with versus without PT to understand if there was any relationship with tendinopathy. RESULTS: No statistically significant difference was observed in age, sex, patella alta, or the Wiberg classification between the QT groups (with vs without) and between the PT groups (with vs without) (P > .05). Having QT was found to be significantly associated with the PF sulcus angle (P = .009), and having PT was found to be significantly associated with the femoral Insall angle (P = .029). CONCLUSION: Jumper’s knee was found to be associated with anatomic variations of the PF sulcus angle and rotation of the patellar tendon in relation to the femur (femoral Insall angle) on axial MRI scans in professional dancers. Unlike those of other athletes, dancers’ knees are exposed more to external rotation forces because of turnout, and this can be the cause of jumper’s knee.
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spelling pubmed-79701962021-03-31 Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis Aksu, Neslihan Atansay, Vefa Karalök, Işık Aksu, Taner Kara, Ayhan Nedim Hamzaoglu, Azmi Orthop J Sports Med Article BACKGROUND: Jumper’s knee is a type of tendinopathy affecting the distal insertion of the quadriceps tendon (25% of cases) or the patellar tendon. It has been shown that frontal-plane measurements, such as genu valgum, genu varum, an increased quadriceps angle, a protuberant tibial tuberosity, patella alta, and short hamstring muscles, may be related to jumper’s knee. PURPOSE: To investigate the effects of tibiofemoral rotational angles and patellofemoral (PF) angles on the development of jumper’s knee in professional folk dancers. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: We examined 26 dancers (16 male, 10 female) with knee pain using magnetic resonance imaging (MRI), for a total of 32 knees. Of the knees, 21 with quadriceps tendinopathy (QT) and 7 with patellar tendinopathy (PT) were detected. Using MRI scans, we measured PF angles (PF sulcus angle, lateral PF angle, patellar tilt angle, lateral trochlear inclination angle, lateral patellar tilt angle, and PF congruence angle) and tibiofemoral rotational angles (condylar twist angle, posterior condylar angle, femoral Insall angle, tibial Insall angle, posterior tibiofemoral angle, and angle between the Whiteside line and posterior femoral condylar line) and noted specifics such as patella alta, patella baja, and the Wiberg classification of the patellar shape between the patients with versus without QT and between patients with versus without PT to understand if there was any relationship with tendinopathy. RESULTS: No statistically significant difference was observed in age, sex, patella alta, or the Wiberg classification between the QT groups (with vs without) and between the PT groups (with vs without) (P > .05). Having QT was found to be significantly associated with the PF sulcus angle (P = .009), and having PT was found to be significantly associated with the femoral Insall angle (P = .029). CONCLUSION: Jumper’s knee was found to be associated with anatomic variations of the PF sulcus angle and rotation of the patellar tendon in relation to the femur (femoral Insall angle) on axial MRI scans in professional dancers. Unlike those of other athletes, dancers’ knees are exposed more to external rotation forces because of turnout, and this can be the cause of jumper’s knee. SAGE Publications 2021-03-16 /pmc/articles/PMC7970196/ /pubmed/33796584 http://dx.doi.org/10.1177/2325967120985229 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by-nc-nd/4.0/ This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Article
Aksu, Neslihan
Atansay, Vefa
Karalök, Işık
Aksu, Taner
Kara, Ayhan Nedim
Hamzaoglu, Azmi
Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis
title Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis
title_full Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis
title_fullStr Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis
title_full_unstemmed Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis
title_short Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper’s Knee in Professional Dancers: An MRI Analysis
title_sort relationship of patellofemoral angles and tibiofemoral rotational angles with jumper’s knee in professional dancers: an mri analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970196/
https://www.ncbi.nlm.nih.gov/pubmed/33796584
http://dx.doi.org/10.1177/2325967120985229
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