Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement
Background and purpose: The pathology of the posterior acetabular lesions, so-called “contrecoup regions”, in femorocacetabular impingement (FAI) has not been elucidated fully. 18 F-fluoride positron emission tomography/computed tomography (PET/CT) can visualize abnormal uptake caused by impingement...
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2019-08-01
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Series: | Journal of Orthopaedic Surgery |
Online Access: | https://doi.org/10.1177/2309499019868929 |
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doaj-ce0b36c0bcff4680a93256f8b50844bb2020-11-25T03:38:27ZengSAGE PublishingJournal of Orthopaedic Surgery2309-49902019-08-012710.1177/2309499019868929Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingementTakayuki Oishi0Naomi Kobayashi1Hyonmin Choe2Taro Tezuka3Daigo Kobayashi4Shota Higashihira5Yutaka Inaba6 Department of Orthopedic Surgery, Yokohama City University Medical Center, Yokohama, Japan Department of Orthopedic Surgery, Yokohama City University Medical Center, Yokohama, Japan Department of Orthopedic Surgery, Yokohama City University, Yokohama, Japan Department of Orthopedic Surgery, Yokohama City University, Yokohama, Japan Department of Orthopedic Surgery, Yokohama City University, Yokohama, Japan Department of Orthopedic Surgery, Yokohama City University, Yokohama, Japan Department of Orthopedic Surgery, Yokohama City University, Yokohama, JapanBackground and purpose: The pathology of the posterior acetabular lesions, so-called “contrecoup regions”, in femorocacetabular impingement (FAI) has not been elucidated fully. 18 F-fluoride positron emission tomography/computed tomography (PET/CT) can visualize abnormal uptake caused by impingement. Therefore, we aimed to evaluate posterior acetabular uptake on PET/CT in FAI patients. Patients and methods: Patients with FAI who underwent 18 F-fluoride PET/CT between October 2014 and October 2016 were retrospectively evaluated. The maximum standardized uptake value (SUV max ) in the posterior acetabulum was evaluated. The mean SUV max of FAI with cam morphology (the cam group) was compared with that of FAI with pincer morphology (the pincer group). In addition, the numbers of cases with SUV max ≥ 6 and SUV max < 6 in each group were evaluated. The entire study cohort was also grouped according to SUV max , and the mean α and center edge angles were evaluated. Results: In total, 41 hips were analyzed (34 hips in the cam group and 7 in the pincer group). The mean SUV max of the cam group (11.2 ± 7.4) was significantly higher than that of the pincer group (4.9 ± 1.9) ( p < 0.01). The incidence of cases with SUV max ≥ 6 in the cam group was significantly high ( p < 0.01). In the overall cohort, the mean α angle of the SUV max ≥ 6 group was significantly higher than that of the SUV max < 6 group ( p < 0.01). Conclusion: Evaluation of posterior acetabular uptake suggests an association between cam morphology and increased posterior acetabular uptake.https://doi.org/10.1177/2309499019868929 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Takayuki Oishi Naomi Kobayashi Hyonmin Choe Taro Tezuka Daigo Kobayashi Shota Higashihira Yutaka Inaba |
spellingShingle |
Takayuki Oishi Naomi Kobayashi Hyonmin Choe Taro Tezuka Daigo Kobayashi Shota Higashihira Yutaka Inaba Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement Journal of Orthopaedic Surgery |
author_facet |
Takayuki Oishi Naomi Kobayashi Hyonmin Choe Taro Tezuka Daigo Kobayashi Shota Higashihira Yutaka Inaba |
author_sort |
Takayuki Oishi |
title |
Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement |
title_short |
Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement |
title_full |
Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement |
title_fullStr |
Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement |
title_full_unstemmed |
Posterior acetabular uptake on F-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement |
title_sort |
posterior acetabular uptake on f-fluoride positron emission tomography/computed tomography reveals a putative contrecoup region in patients with femoroacetabular impingement |
publisher |
SAGE Publishing |
series |
Journal of Orthopaedic Surgery |
issn |
2309-4990 |
publishDate |
2019-08-01 |
description |
Background and purpose: The pathology of the posterior acetabular lesions, so-called “contrecoup regions”, in femorocacetabular impingement (FAI) has not been elucidated fully. 18 F-fluoride positron emission tomography/computed tomography (PET/CT) can visualize abnormal uptake caused by impingement. Therefore, we aimed to evaluate posterior acetabular uptake on PET/CT in FAI patients. Patients and methods: Patients with FAI who underwent 18 F-fluoride PET/CT between October 2014 and October 2016 were retrospectively evaluated. The maximum standardized uptake value (SUV max ) in the posterior acetabulum was evaluated. The mean SUV max of FAI with cam morphology (the cam group) was compared with that of FAI with pincer morphology (the pincer group). In addition, the numbers of cases with SUV max ≥ 6 and SUV max < 6 in each group were evaluated. The entire study cohort was also grouped according to SUV max , and the mean α and center edge angles were evaluated. Results: In total, 41 hips were analyzed (34 hips in the cam group and 7 in the pincer group). The mean SUV max of the cam group (11.2 ± 7.4) was significantly higher than that of the pincer group (4.9 ± 1.9) ( p < 0.01). The incidence of cases with SUV max ≥ 6 in the cam group was significantly high ( p < 0.01). In the overall cohort, the mean α angle of the SUV max ≥ 6 group was significantly higher than that of the SUV max < 6 group ( p < 0.01). Conclusion: Evaluation of posterior acetabular uptake suggests an association between cam morphology and increased posterior acetabular uptake. |
url |
https://doi.org/10.1177/2309499019868929 |
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