Fluid collection within the synovial sheath of the tendon of the flexor hallus longus muscle in the tarsal joint of rats: an anatomic variant detectable with magnetic resonance imaging
| Autor: | Yi-Xiang J. Wang, F. R. Westwood |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Male
Synovial sheath Tarsal Joints Anatomic variant Tendons Lesion Synovial Fluid Animals Medicine Rats Wistar Muscle Skeletal General Veterinary medicine.diagnostic_test business.industry Synovial Membrane Tarsal Joint Magnetic resonance imaging Histology Anatomy musculoskeletal system Magnetic Resonance Imaging Signal on Hindlimb Rats Tendon medicine.anatomical_structure Animal Science and Zoology medicine.symptom business |
| Zdroj: | Laboratory Animals. 40:58-62 |
| ISSN: | 1758-1117 0023-6772 |
| DOI: | 10.1258/002367706775404381 |
| Popis: | Magnetic resonance (MR) images of the right tarsal joint of 22 normal male Han:Wistar rats were acquired using a 4.7 T magnet. An intermediate–high signal area associated with the tendon of the flexor hallus longus muscle was noticed in three rats on T2-weighted images. These areas appeared as an intermediate–high signal on lightly T2-weighted images, but appeared as an iso-signal to muscle structure on proton density weighted images. Histology preparations showed that such areas were caused by a sizable fluid collection within the synovial sheath of the tendon of the flexor hallus longus muscle, with all other joint structures appearing normal. This anatomic variant could be potentially regarded as a lesion on T2-weighted MR images, such as inflamed tissue with oedema, especially when the spatial resolution and/or signal-to-noise ratio are not optimal. |
| Databáze: | OpenAIRE |
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