Cut-Off Value of Medial Meniscal Extrusion for Knee Pain

Purpose. Medial meniscal extrusion (MME) has attracted attention as an index of knee pain in conjunction with clinical symptoms that could be more useful than the diagnosis of knee osteoarthritis on X-ray. However, the size of MME that would cause knee pain has not been clarified. The aim of the pre...

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Main Authors: Hiroaki Kijima, Naohisa Miyakoshi, Yuji Kasukawa, Yoshinori Ishikawa, Hayato Kinoshita, Kentaro Ohuchi, Masazumi Suzuki, Nozomi Kaga, Chie Sato, Shuichi Chida, Yoichi Shimada
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Advances in Orthopedics
Online Access:http://dx.doi.org/10.1155/2017/6793026
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author Hiroaki Kijima
Naohisa Miyakoshi
Yuji Kasukawa
Yoshinori Ishikawa
Hayato Kinoshita
Kentaro Ohuchi
Masazumi Suzuki
Nozomi Kaga
Chie Sato
Shuichi Chida
Yoichi Shimada
author_facet Hiroaki Kijima
Naohisa Miyakoshi
Yuji Kasukawa
Yoshinori Ishikawa
Hayato Kinoshita
Kentaro Ohuchi
Masazumi Suzuki
Nozomi Kaga
Chie Sato
Shuichi Chida
Yoichi Shimada
author_sort Hiroaki Kijima
collection DOAJ
description Purpose. Medial meniscal extrusion (MME) has attracted attention as an index of knee pain in conjunction with clinical symptoms that could be more useful than the diagnosis of knee osteoarthritis on X-ray. However, the size of MME that would cause knee pain has not been clarified. The aim of the present study was to investigate the cut-off value of MME for knee pain. Methods. A total of 318 knees were evaluated. The presence of current or past knee pain was confirmed by interview. Next, MME was measured using vertical sonographic images of the medial joint spaces during weightbearing. Results. Overall, 71 knees were painful (P-group), and 247 knees were not (N-group). MME was 5.9 ± 1.8 mm in the P-group and 2.9 ± 1.5 mm in the N-group (P<0.0001). Analysis of the receiver operating characteristic curve showed that the cut-off value of MME for knee pain was 4.3 mm, with sensitivity of 0.8451 and specificity of 0.8502. In addition, 64% of knees without pain cases at the time of examination whose MME exceeded this cut-off value had past knee pain. Conclusions. The sensitivity and specificity of MME for knee pain were very high with a cut-off value of 4.3 mm.
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spelling doaj-art-6249ac31d76d4d44bc6422c8ac3b54e82025-02-03T06:08:37ZengWileyAdvances in Orthopedics2090-34642090-34722017-01-01201710.1155/2017/67930266793026Cut-Off Value of Medial Meniscal Extrusion for Knee PainHiroaki Kijima0Naohisa Miyakoshi1Yuji Kasukawa2Yoshinori Ishikawa3Hayato Kinoshita4Kentaro Ohuchi5Masazumi Suzuki6Nozomi Kaga7Chie Sato8Shuichi Chida9Yoichi Shimada10Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports, Arthroscopy, and Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports, Arthroscopy, and Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanPurpose. Medial meniscal extrusion (MME) has attracted attention as an index of knee pain in conjunction with clinical symptoms that could be more useful than the diagnosis of knee osteoarthritis on X-ray. However, the size of MME that would cause knee pain has not been clarified. The aim of the present study was to investigate the cut-off value of MME for knee pain. Methods. A total of 318 knees were evaluated. The presence of current or past knee pain was confirmed by interview. Next, MME was measured using vertical sonographic images of the medial joint spaces during weightbearing. Results. Overall, 71 knees were painful (P-group), and 247 knees were not (N-group). MME was 5.9 ± 1.8 mm in the P-group and 2.9 ± 1.5 mm in the N-group (P<0.0001). Analysis of the receiver operating characteristic curve showed that the cut-off value of MME for knee pain was 4.3 mm, with sensitivity of 0.8451 and specificity of 0.8502. In addition, 64% of knees without pain cases at the time of examination whose MME exceeded this cut-off value had past knee pain. Conclusions. The sensitivity and specificity of MME for knee pain were very high with a cut-off value of 4.3 mm.http://dx.doi.org/10.1155/2017/6793026
spellingShingle Hiroaki Kijima
Naohisa Miyakoshi
Yuji Kasukawa
Yoshinori Ishikawa
Hayato Kinoshita
Kentaro Ohuchi
Masazumi Suzuki
Nozomi Kaga
Chie Sato
Shuichi Chida
Yoichi Shimada
Cut-Off Value of Medial Meniscal Extrusion for Knee Pain
Advances in Orthopedics
title Cut-Off Value of Medial Meniscal Extrusion for Knee Pain
title_full Cut-Off Value of Medial Meniscal Extrusion for Knee Pain
title_fullStr Cut-Off Value of Medial Meniscal Extrusion for Knee Pain
title_full_unstemmed Cut-Off Value of Medial Meniscal Extrusion for Knee Pain
title_short Cut-Off Value of Medial Meniscal Extrusion for Knee Pain
title_sort cut off value of medial meniscal extrusion for knee pain
url http://dx.doi.org/10.1155/2017/6793026
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