Normal Magnetic Resonance Imaging Anatomy of the Capsular Ligamentous Supporting Structures of the Knee

2016 ◽  
Vol 67 (4) ◽  
pp. 356-367 ◽  
Author(s):  
Lana H. Gimber ◽  
Jolene C. Hardy ◽  
David M. Melville ◽  
Luke R. Scalcione ◽  
Andrew Rowan ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Proximal Tibiofibular Joint ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Tibiofibular Joint ◽  
Anatomic Variants ◽  
Neurovascular Structures ◽  
Supporting Structures

Recognition of the normal magnetic resonance (MR) imaging appearances of the capsular ligaments of the knee is of great importance. These ligaments contribute to stability of the knee joint and are frequently injured. In this article, we describe the normal MR imaging anatomy of the capsular ligaments of the knee including the lateral and medial collateral ligamentous complexes, the extensor mechanism, and the supporting ligamentous structures of the proximal tibiofibular joint. Normal MR imaging findings and important anatomic variants of the neurovascular structures of the knee are also described.

Magnetic resonance imaging findings in ossification of the posterior longitudinal ligament of the cervical spine

1998 ◽  
Vol 88 (2) ◽  
pp. 247-254 ◽  
Author(s):  
Izumi Koyanagi ◽  
Yoshinobu Iwasaki ◽  
Kazutoshi Hida ◽  
Hiroyuki Imamura ◽  
Hiroshi Abe
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Posterior Longitudinal Ligament ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Disc Protrusion ◽  
Content Type ◽  
Fine Print

Object. Because of the lack of magnetic resonance (MR) signal from cortical bones, MR imaging is inadequate for diagnosing ossified lesions in the spinal canal. However, MR imaging provides important information on spinal cord morphology and associated soft-tissue abnormality. The purpose of this study is to determine the role of MR imaging in the diagnosis and treatment of patients with ossification of the posterior longitudinal ligament (OPLL) of the cervical spine. Methods. The authors reviewed MR imaging findings in 42 patients with cervical OPLL who were examined with a superconducting MR imaging system. The types of OPLL reviewed included eight cases of continuous, 21 cases of segmental, and 13 cases of the mixed type. All patients were treated surgically either by anterior (26 cases) or posterior decompression (16 cases). Conclusions. The T1-weighted images clearly demonstrated the spinal cord deformity caused by OPLL. Associated disc protrusion was found to be present at the maximum compression level in 60% of the patients in this series. The highest incidence of disc protrusion (81%) was found in patients with segmental OPLL. Intramedullary hyperintensity on T2*-weighted imaging was noted in 18 patients (43%). The neurological deficits observed in these 18 patients were significantly more severe than those observed in the other 24 patients. Postoperative MR imaging revealed improvement in the spinal cord deformity, although the intramedullary hyperintensity was still observed in most cases. The present study demonstrates the importance of associated disc protrusion in the development of myelopathy in patients with cervical OPLL. Magnetic resonance imaging findings may be used to help determine the actual levels of spinal cord compression and to suggest the method of surgical treatment.

Pituitary apoplexy: correlation between magnetic resonance imaging and histopathological results

2008 ◽  
Vol 108 (5) ◽  
pp. 909-915 ◽  
Author(s):  
Patrick L. Semple ◽  
John A. Jane ◽  
M. Beatriz S. Lopes ◽  
Edward R. Laws
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Clinical Features ◽  
Pituitary Apoplexy ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Hemorrhagic Infarction ◽  
Histopathological Results ◽  
The University

Object The aim of this study was to correlate the magnetic resonance (MR) imaging findings in pituitary apoplexy with histopathological results and determine whether the histopathology influences clinical presentation and outcome. Methods The records of 36 patients with histologically confirmed pituitary apoplexy, who were treated surgically at the University of Virginia Health System between 1996 and 2006, were retrospectively reviewed. The MR images were divided into 3 groups: 1) infarction alone; 2) hemorrhage with or without infarction; and 3) tumor only with no evidence of apoplexy. The histological examination was divided into infarction alone or hemorrhagic infarction/hemorrhage. The MR imaging findings were then correlated with the histopathological results to assess how accurately the histopathology was predicted by the MR imaging. The clinical features and outcomes of the two histopathological groups were also compared. Results The MR imaging findings were able to predict the histopathology accurately in the majority of cases. The group of patients with infarction had less severe clinical features and a better outcome than those with hemorrhagic infarction/hemorrhage. Conclusions Magnetic resonance imaging findings in the setting of pituitary apoplexy accurately predict the nature of the apoplectic process and help to guide the type and timing of therapy.

Forefoot Pain in the Lesser Toes: Anatomical Considerations and Magnetic Resonance Imaging Findings

2019 ◽  
Vol 70 (4) ◽  
pp. 408-415 ◽  
Author(s):  
Tine Hulstaert ◽  
Maryam Shahabpour ◽  
Steven Provyn ◽  
Leon Lenchik ◽  
Philip Simons ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Mr Imaging ◽  
Subcutaneous Tissue ◽  
Accurate Assessment ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Anatomical Features ◽  
Forefoot Pain ◽  
Neurovascular Structures ◽  
Forefoot Disorders

Various conditions may result in forefoot pain. Magnetic resonance (MR) imaging allows accurate assessment of many of these conditions. We provide an overview of forefoot disorders divided into bones, capsule and plantar plate, musculotendinous structures, neurovascular structures, and subcutaneous tissue. We review normal anatomical features as well as MR imaging findings of common disorders.

Magnetic Resonance Imaging of an Epidural Spinal Arachnoid Cyst

1989 ◽  
Vol 30 (5) ◽  
pp. 491-493 ◽  
Author(s):  
J. K. Hald ◽  
S. J. Bakke ◽  
P. H. Nakstad ◽  
I. O. Skalpe ◽  
J. Wiberg
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Arachnoid Cyst ◽  
Cord Compression ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Cyst Size ◽  
Spinal Arachnoid Cyst

The myelography, CT and MR imaging findings in a patient with an epidural spinal arachnoid cyst are discussed. MR imaging excellently demonstrated cyst size, cyst location and cord compression, and should be the method of choice in these cases.

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