Radiographic, Computed Tomographic and Magnetic Resonance Imaging Evaluation of a Chronic Long Digital Extensor Tendon Avulsion in a Dog

Fitch, Randall B.; Wilson, Eric R.; Hathcock, John T.; Montgomery, R. D.

doi:10.1111/j.1740-8261.1997.tb00836.x

Cited by 23 publications

(24 citation statements)

References 7 publications

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“…In humans, magnetic resonance imaging (MRI) is replacing arthroscopy for evaluation of meniscal injuries as it enables non invasive examination of the entire meniscus, including its tibial surface and the internal structure 18–20 . MRI of the canine stifle joint has been reported in normal dogs, 21,22 clinical patients, 23–30 and in experimental settings 31–39 . However, description of the development and MR appearance of meniscal lesions in the dog is limited.…”

Section: Introductionmentioning

confidence: 99%

Low‐field Mri and Arthroscopy of Meniscal Lesions in Ten Dogs With Experimentally Induced Cranial Cruciate Ligament Insufficiency

Martig

Konar

Schmökel³

et al. 2006

Vet Radiology Ultrasound

110

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Little is known about the magnetic resonance imaging (MRI) appearance of canine meniscal lesions. The aim of this study is to describe the MR appearance of meniscal lesions in dogs with experimentally induced cranial cruciate ligament (CCL) deficiency. The pilot study revealed dogs weighing approximately 10 kg to be too small for meniscal evaluation on low-field MRI. In the main study, dogs weighing approximately 35 kg were used. The left CCL was transected and low-field MRI was performed regularly until 13 months post-surgery. Normal menisci were defined as grade 0. Intrameniscal lesions not reaching any surface corresponded to grade 1 if focal and to grade 2 if linear or diffuse. Grade 3 lesions consisted in linear tears penetrating a meniscal surface. Grade 4 lesions included complex signal changes or meniscal distortion. Between 2 and 13 months post-surgery, all dogs developed grade 4 lesions in the medial meniscus. Most of them corresponded to longitudinal or bucket handle tears on arthroscopy and necropsy. Two dogs showed grade 3 lesions reaching the tibial surface of the lateral meniscus on MRI but not in arthroscopy. Such tears are difficult to evaluate arthroscopically; MRI provides more accurate information about the tibial meniscal surface. Grades 1 and 2 lesions could not be differentiated from presumably normal menisci with our imaging technique. An MRI grading system better adapted to canine lesions has yet to be developed. MRI is a helpful tool for the diagnosis of complete tears in the canine meniscus, especially in larger dogs.

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Section: Introductionmentioning

confidence: 99%

Low‐field Mri and Arthroscopy of Meniscal Lesions in Ten Dogs With Experimentally Induced Cranial Cruciate Ligament Insufficiency

Martig

Konar

Schmökel³

et al. 2006

Vet Radiology Ultrasound

110

View full text Add to dashboard Cite

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“…Radiological examination of joints has long been used in veterinary diagnosis, both for the assessment of joint function and the diagnosis of joint pathologies. Sophisticated modern technologies such as MRI have also been used to facilitate earlier, more accurate diagnosis (Fitch et al 1997, Snaps et al 1998, Reichle & Snaps 1999, Banfield & Morrison 2000, Widmer et al 2000.…”

mentioning

confidence: 99%

Some aspects of rat femorotibial joint microanatomy as demonstrated by high-resolution magnetic resonance imaging

et al. 2006

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SummaryHigh-resolution magnetic resonance images (MRI) of the right femorotibial joint of normal Han:Wistar rats were acquired using a 4.7 Tesla magnet and a single-turn solenoid radio frequency coil (built in-house). Some anatomical findings of the rat femorotibial joint, which have not been reported previously using MRI, are described. The separation of patellar ligament and crural fascia was feasible on MRI. This separation would not be seen on images of lower resolution and its presence on high-resolution images could be mistaken for artefact due to the magic angle effect. Band-like fibrous structures exist in the infra-patellar fat pad, which might be mistaken as ligaments within the femorotibial joint. On sagittal MRI a vessel was seen inserted on the central part of the caudal surface of the patellar ligament. Subcutaneous fascia/cutaneous muscles (panniculus carnosus) could also be demonstrated with MRI in the femorotibial joint area.

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“…The erosive version of feline polyarthritis is also associated with radiographic subchondral bone defects, whereas radiographic findings of villonodular synovitis is most associated with cortical defects 2,3,5 . Long digital extensor tendon avulsion is frequently associated with mineralization of the tendon, avulsion fragments near the extensor fossa, or as an osseous defect at the fossa 3,20 . Avulsion fractures of the tibial crest can be identified on lateral radiographic projections.…”

Section: Radiographymentioning

confidence: 99%

“…Diagnosis of CCL rupture can be made by demonstration of the fluttering edges of the ruptured ligament (Fig 3). If the infrapatellar fat pad obscures observation of the ruptured CCL, saline solution can be injected into the joint to create an anechoic window 20–22 …”

Section: Ultrasonographymentioning

confidence: 99%

“…A ruptured patellar tendon appears swollen with irregular margins on ultrasound evaluation and is hyporeflective to hyperreflective. Any bone fragments >3 mm will have acoustic shadowing 20–23 . Thickening of the patellar tendon, as observed in dogs after tibial plateau leveling osteotomy (TPLO), appears as hypoechoic to anechoic centrally with disruption of the normal ligamentous pattern of the fibrils 17 .…”

Section: Ultrasonographymentioning

confidence: 99%

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Diagnostic Imaging of the Canine Stifle: A Review

Marino

Loughin

2010

Veterinary Surgery

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The stifle joint, a common location for lameness in dogs, is a complex arrangement of osseous, articular, fibrocartilaginous, and ligamentous structures. The small size of its component structures, restricted joint space, and its intricate composition make successful diagnostic imaging a challenge. Different tissue types and their superimposition limit successful diagnostic imaging with a single modality. Most modalities exploit the complexity of tissue types found in the canine stifle joint. Improved understanding of the principles of each imaging modality and the properties of the tissues being examined will enhance successful diagnostic imaging.

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Radiographic, Computed Tomographic and Magnetic Resonance Imaging Evaluation of a Chronic Long Digital Extensor Tendon Avulsion in a Dog

Cited by 23 publications

References 7 publications

Low‐field Mri and Arthroscopy of Meniscal Lesions in Ten Dogs With Experimentally Induced Cranial Cruciate Ligament Insufficiency

Low‐field Mri and Arthroscopy of Meniscal Lesions in Ten Dogs With Experimentally Induced Cranial Cruciate Ligament Insufficiency

Some aspects of rat femorotibial joint microanatomy as demonstrated by high-resolution magnetic resonance imaging

Diagnostic Imaging of the Canine Stifle: A Review

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