Medial meniscus extrusion as a predictor for a poor prognosis in patients with spontaneous osteonecrosis of the knee

The Knee ◽  
2021 ◽  
Vol 31 ◽  
pp. 164-171
Author(s):  
Shogo Hashimoto ◽  
Masanori Terauchi ◽  
Kazuhisa Hatayama ◽  
Takashi Ohsawa ◽  
Takuya Omodaka ◽  
...  
Keyword(s):  
Poor Prognosis ◽  
Medial Meniscus ◽  
Spontaneous Osteonecrosis ◽  
Medial Meniscus Extrusion ◽  
Meniscus Extrusion

Association between medial meniscus extrusion and spontaneous osteonecrosis of the knee

2017 ◽  
Vol 21 (12) ◽  
pp. 2104-2111 ◽  
Author(s):  
Tadashi Yasuda ◽  
Satoshi Ota ◽  
Satoshi Fujita ◽  
Eijiro Onishi ◽  
Koichi Iwaki ◽  
...  
Keyword(s):  
Medial Meniscus ◽  
Spontaneous Osteonecrosis ◽  
Medial Meniscus Extrusion ◽  
Meniscus Extrusion

Medial meniscus extrusion increases with age and BMI and is depending on different loading conditions

2018 ◽  
Vol 26 (8) ◽  
pp. 2282-2288 ◽  
Author(s):  
Andrea Achtnich ◽  
Wolf Petersen ◽  
Lukas Willinger ◽  
Andreas Sauter ◽  
Michael Rasper ◽  
...  
Keyword(s):  
Medial Meniscus ◽  
Loading Conditions ◽  
Medial Meniscus Extrusion ◽  
Meniscus Extrusion

scholarly journals Greater Medial Meniscus Extrusion Seen on Ultrasonography Indicates the Risk of Posterior Root Tear in Non-radiographic Knee Osteoarthritis Population

2021 ◽  
Author(s):  
Daisuke Chiba ◽  
Tomoyuki Sasaki ◽  
Yasuyuki Ishibashi
Keyword(s):  
Odds Ratio ◽  
Adjusted Odds Ratio ◽  
Medial Meniscus ◽  
Roc Curves ◽  
Posterior Root ◽  
Root Tear ◽  
Cross Sectional ◽  
Posterior Root Tear ◽  
Medial Meniscus Extrusion ◽  
Meniscus Extrusion

Abstract Purpose: To elucidate the association between medial meniscus extrusion measured on ultrasonography (MMEUS) and the prevalence of medial meniscus posterior root tear detected on magnetic resonance imaging (MMPRTMRI). Methods: We recruited 127 patients (135 knees) in this cross-sectional study. All participants had medial knee pain without a knee trauma or surgery history. Knee osteoarthritis (KOA) severity was evaluated using Kellgren-Lawrence grade (KLG) scores. Patients with KLG scores 0-1 and ≥2 were classified in non-radiographic (non-ROA) and radiographic KOA (ROA) groups, respectively. MMEUS was measured with patients in the supine position. Based on T2*-weighted images, MMPRTMRI was defined as the presence of “Ghost meniscus sign” and “Creft/truncation sign”, indicating an abnormal high signal intensity of a disrupted posterior root. MMEUS was compared between MMPRT+ and MMPRT– patients using a non-paired t-test. Receiver operating characteristic (ROC) curves were used to determine the optimal cut-off MMEUS to predict MMPRT+.Results: The prevalence of MMPRT+ was 31.3% (25/80 knees) and 29.1% (16/55 knees) in the non-ROA and ROA groups. The MMEUS of MMPRT+ patients were significantly greater than that of MMPRT– patients in both the non-ROA (5.9±1.4 mm vs. 4.4±1.0 mm, P<0.001) and ROA (7.8±1.3 mm vs. 6.3±1.3 mm, P<0.001) groups. ROC curves demonstrated that 5-mm and 7-mm MMEUS were the optimal cut-off values in non-ROA (adjusted odds ratio: 6.280; area under the curve [AUC]: 0.809; P<0.001) and ROA (adjusted odds ratio: 15.003; AUC: 0.797; P=0.001) groups.Conclusions: In early non-radiographic KOA stages, a greater MMEUS was associated with a higher MMPRTMRI prevalence.Level of evidence: III, Cross-sectional cohort study

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