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Posterior meniscal root injuries

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ABSTRACT

Meniscal root tears (MRTs) are defined as radial tears within 1 cm of the meniscal root insertion, or an avulsion of the insertion of the meniscus. These injuries change joint loading due to failure of the meniscus to convert axial loads into hoop stresses, resulting in joint overloading and degenerative changes in the knee. Meniscal root repair is recommended in patients without advanced osteoarthritis (Outerbridge 3–4), in order to restore joint congruence and loading and therefore to avoid the long-term effect of joint overloading. Several techniques have been described. Improved knee function has been reported after meniscal root repair, but there are still conflicting reports on whether surgical treatment can prevent osteoarthritis.

No MeSH data available.


Visualization of meniscal root tears via magnetic resonance imaging. A. Coronal T2-weighted section demonstrating medial meniscal extrusion (arrow) (left knee). B. Axial image demonstrating high signal in region of meniscus root and posterior horn with a radial root tear (arrow) (right knee). C. Sagittal image demonstrating ghost sign (arrow) (right knee). Reprinted with permission from Bhatia et al. (2014).
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Figure 0005: Visualization of meniscal root tears via magnetic resonance imaging. A. Coronal T2-weighted section demonstrating medial meniscal extrusion (arrow) (left knee). B. Axial image demonstrating high signal in region of meniscus root and posterior horn with a radial root tear (arrow) (right knee). C. Sagittal image demonstrating ghost sign (arrow) (right knee). Reprinted with permission from Bhatia et al. (2014).

Mentions: De Smet and Mukherjee (2008) recommended that suspected posterior meniscal root pathology should be evaluated at 3 locations on MRI: between the intercondylar tubercles, at the level of the lateral tubercle, and on the lateral edge of the tibial eminence adjacent to the lateral tubercle. In addition, the root tear should be evaluated in the coronal and sagittal planes, as visualization of both planar images yielded the highest sensitivity (De Smet and Mukherjee 2008). To increase diagnostic sensitivity and specificity further, T2-weighted sequences should be used to examine the tear (Lee et al. 2008) (Figure 5).


Posterior meniscal root injuries
Visualization of meniscal root tears via magnetic resonance imaging. A. Coronal T2-weighted section demonstrating medial meniscal extrusion (arrow) (left knee). B. Axial image demonstrating high signal in region of meniscus root and posterior horn with a radial root tear (arrow) (right knee). C. Sagittal image demonstrating ghost sign (arrow) (right knee). Reprinted with permission from Bhatia et al. (2014).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5016902&req=5

Figure 0005: Visualization of meniscal root tears via magnetic resonance imaging. A. Coronal T2-weighted section demonstrating medial meniscal extrusion (arrow) (left knee). B. Axial image demonstrating high signal in region of meniscus root and posterior horn with a radial root tear (arrow) (right knee). C. Sagittal image demonstrating ghost sign (arrow) (right knee). Reprinted with permission from Bhatia et al. (2014).
Mentions: De Smet and Mukherjee (2008) recommended that suspected posterior meniscal root pathology should be evaluated at 3 locations on MRI: between the intercondylar tubercles, at the level of the lateral tubercle, and on the lateral edge of the tibial eminence adjacent to the lateral tubercle. In addition, the root tear should be evaluated in the coronal and sagittal planes, as visualization of both planar images yielded the highest sensitivity (De Smet and Mukherjee 2008). To increase diagnostic sensitivity and specificity further, T2-weighted sequences should be used to examine the tear (Lee et al. 2008) (Figure 5).

View Article: PubMed Central - PubMed

ABSTRACT

Meniscal root tears (MRTs) are defined as radial tears within 1 cm of the meniscal root insertion, or an avulsion of the insertion of the meniscus. These injuries change joint loading due to failure of the meniscus to convert axial loads into hoop stresses, resulting in joint overloading and degenerative changes in the knee. Meniscal root repair is recommended in patients without advanced osteoarthritis (Outerbridge 3–4), in order to restore joint congruence and loading and therefore to avoid the long-term effect of joint overloading. Several techniques have been described. Improved knee function has been reported after meniscal root repair, but there are still conflicting reports on whether surgical treatment can prevent osteoarthritis.

No MeSH data available.