MR Diagnosis of Posterior Root Tears of the Lateral Meniscus Using Arthroscopy as the Reference Standard

Smet, Arthur A. De; Blankenbaker, Donna G.; Kijowski, Richard; Graf, Ben K.; Shinki, Kazuhiko

doi:10.2214/ajr.08.1300

Cited by 146 publications

(123 citation statements)

References 13 publications

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“…They stated that posterior root is difficult to assess by MRI and prone to diagnostic errors because images seemingly show even a single tear as bundles of multiple tears. However, recent reports contributed to raising awareness and interest in the application of MRI for the diagnosis of MMPRTs27,28,29,30,31). Lee et al31) proposed that the MMPRT would not be difficult to diagnose if the diagnosis is based on three different discriminatory features on MRI-plane images along with clinical symptoms: the ghost sign from the sagittal plane (detection rate of 100%), the vertical linear defect (signs of truncation) on the coronal plane (100%), and the radial linear defect on the axial plane (94%) (Fig.…”

Section: Diagnosis Of Mmprtmentioning

confidence: 99%

Medial Meniscus Posterior Root Tear: A Comprehensive Review

Lee¹,

2014

Knee Surg Relat Res

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Damage to the medial meniscus root, for example by a complete radial tear, destroys the ability of the knee to withstand hoop strain, resulting in contact pressure increases and kinematic alterations. For these reasons, several techniques have been developed to repair the medial meniscus posterior root tear (MMPRT), many of which have shown complete healing of the repaired MMPRT. However, efforts to standardize or optimize the treatment for MMPRT are much needed. When planning a surgical intervention for an MMPRT, strict surgical indications regarding the effect of pullout strength on the refixed root, bony degenerative changes, mechanical alignment, and the Kellgren-Lawrence grade should be considered. Although there are several treatment options and controversies, the current trend is to repair the MMPRT using various techniques including suture anchors and pullout sutures if the patient meets the indications. However, there are still debates on the restoration of hoop tension and prevention of arthritis after repair and further biomechanical and clinical studies should be conducted in the future. The aim of this article was to review and summarize the recent literature regarding various diagnosis and treatment strategies of MMPRT, especially focusing on conflict issues including whether repair techniques can restore the main function of normal meniscus and which is the best suture technique to repair the MMPRT. The authors attempted to provide a comprehensive review of previous studies ranging from basic science to current surgical techniques.

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Section: Diagnosis Of Mmprtmentioning

confidence: 99%

Medial Meniscus Posterior Root Tear: A Comprehensive Review

Lee¹,

2014

Knee Surg Relat Res

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“…For example, by reporting all probable tears as torn, the sensitivity and specificity of detecting lateral posterior root tears improved to 94% and 89%, respectively, when using arthroscopy as the gold standard. 52 Unlike the situation for most tear types, coronal and fluid-sensitive sequences result in better delineation of the roots and partially compensate for the artifacts mentioned earlier.…”

Section: Root Tearsmentioning

confidence: 99%

Magnetic Resonance Imaging of the Meniscus

Rosas

2014

Magnetic Resonance Imaging Clinics of North America

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“…Nowadays attention is being directed to the region of roots, which has led to increase in the sensitivity and specificity to 86-90% and 94-95%, respectively for detection of tear at MRI. 43,44 The roots are better delineated in Coronal and fluidsensitive sequences and also partially compensates for magic angle and pulsation artifacts. On coronal sequences the roots should course over its respective tibial plateau on at least one image ( Figure 12).…”

Section: Root Tearsmentioning

confidence: 99%

“…46 Additionally, when an ACL tear is present, incidence of lateral root tear is increased. 44,47 There is an increased propensity of extrusion seen with complete root tear, particularly when tear occurs in medial meniscus. 47,48 …”

Section: Root Tearsmentioning

confidence: 99%

MR imaging of meniscal tears

et al. 2017

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Background: Menisci transmit the forces across the joint and cushion the mechanical loading of the joint. Thus, it is important to identify meniscal tear. A thorough understanding of normal meniscal anatomy and surrounding structure is critical for diagnosis. Magnetic resonance imaging is the current modality of choice providing fine resolution and multi-planar imaging for identifying the meniscal injuries and the various pattern of tear, helping to plan the subsequent management. The purpose of the work was to study the role of MRI in classifying the meniscal injuries.Methods: MRI Knee of 136 patients with meniscal injuries was studied. All the MR imaging scans were performed on 1.5-T MR system (Siemens magnetom Essenza).Results: A total of 136 patients were studied in which majority of the patient’s i.e. 90.44 % had medial meniscal tear while 18.38 % patients had lateral meniscal tear. Both medial and lateral meniscal tears were found in 8.82 % patients. Among the different types of tears, horizontal tear was the most common tear in both medial and lateral meniscus comprising 52.8 % and 52 % respectively. The tears being most common in the age group 41-50years. There were associated injuries to the other ligaments of the knee joint along with meniscal tear, ACL tear being the most common and was seen in 50% of patients.Conclusions: MRI is a good modality for classifying meniscal injury and evaluation of injuries to the associated ligaments. Secondary signs are good predictors of underlying meniscal tear in equivocal cases.

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MR Diagnosis of Posterior Root Tears of the Lateral Meniscus Using Arthroscopy as the Reference Standard

Cited by 146 publications

References 13 publications

Medial Meniscus Posterior Root Tear: A Comprehensive Review

Medial Meniscus Posterior Root Tear: A Comprehensive Review

Magnetic Resonance Imaging of the Meniscus

MR imaging of meniscal tears

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