Normal variations in MR imaging of the knee: appearance and frequency

Watanabe, A T; Carter, BC; Teitelbaum, G P; Seeger, L L; Bradley, W G

doi:10.2214/ajr.153.2.341

Cited by 71 publications

(22 citation statements)

References 4 publications

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“…3) The meniscofemoral ligament is a strong fibrous band that connects the posterior horn of the lateral meniscus to the medial condyle of the femur ( Fig. 1) Several causes for meniscal pseudotears on MR images resulting from normal anatomic variants have been described [3][4][5].…”

Section: Methodsmentioning

confidence: 99%

MR imaging of the knee: pseudotear of the lateral meniscus caused by the meniscofemoral ligament.

Vahey

Bennett²,

Arrington³

et al. 1990

American Journal of Roentgenology

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Section: Methodsmentioning

confidence: 99%

MR imaging of the knee: pseudotear of the lateral meniscus caused by the meniscofemoral ligament.

Vahey

Bennett²,

Arrington³

et al. 1990

American Journal of Roentgenology

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“…There are several anatomical structures that may be mistaken for a longitudinal tear and this includes intra-articular course of popliteus tendon; insertion of transverse inter-meniscal ligament, popliteomeniscal fascicles and meniscofemoral ligaments to the posterior horn of lateral meniscus and the normal striated appearance of the anterior root ligament of the lateral meniscus formed from fibers originating from the ACL. 20,[34][35][36] Therefore because of the complex surrounding anatomy and posterior attachments it is difficult to identify peripheral longitudinal tears of the posterior horn of lateral meniscus. Longitudinal-vertical tears often occur in younger patients after significant knee trauma and have a tendency to involve the peripheral third of the meniscus and posterior horns.…”

Section: Longitudinal Tearmentioning

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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“…(11) In reality, isolated tears of the anterior horn of the lateral meniscus are relatively rare and account for only 16% of lateral meniscal tears. (5) Similarly, normal anatomic interfaces may also mimic meniscal tears in the case of the posterior intermeniscal ligament (Fig.…”

Section: A 5c 5d 5bmentioning

confidence: 99%

Clinics in diagnostic imaging (177)

See¹

2017

smedj

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Normal variations in MR imaging of the knee: appearance and frequency

Cited by 71 publications

References 4 publications

MR imaging of the knee: pseudotear of the lateral meniscus caused by the meniscofemoral ligament.

MR imaging of the knee: pseudotear of the lateral meniscus caused by the meniscofemoral ligament.

MR imaging of meniscal tears

Clinics in diagnostic imaging (177)

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