Journal article
The effect of ankle ligament damage and surgical reconstructions on the mechanics of the ankle and subtalar joints revealed by three-dimensional stress MRI
Journal of orthopaedic research, v 23(4), pp 743-749
2005
PMID: 16022985
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Common image-based diagnostic techniques used to detect ankle ligament injuries or the effects of those injuries (e.g., mechanical instability) include magnetic resonance imaging (MRI) and stress radiography. Each of these techniques has limitations. The interpretation of the results obtained through stress radiography, a two-dimensional technique, is highly controversial. MRI can facilitate visualization of soft tissue, but three-dimensional visualization of the full length of the ligaments or detecting partial ligament damage is difficult. This work is part of a long-term study aimed at improving the diagnostic ability of MRI by utilizing it not only to visualize the ligaments but also to detect the mechanical instability produced at the ankle and subtalar joints due to ligament damage. The goal of the present study was to evaluate the ability of a previously developed technique called 3D stress MRI (sMRI) to detect in vitro the effect of damage to the lateral collateral ligaments and the stabilizing effect produced by two common surgical reconstruction techniques. MRI data were collected from eight cadaver limbs in a MR compatible ankle-loading device in neutral, inversion, and anterior drawer. Each specimen was tested intact, after cutting the anterior talo-fibular ligament followed by the calcaneo-fibular ligament and after applying two reconstructions. Ligament injuries produced significant changes in the response of the ankle and subtalar joints to load as detected by the 3D stress MRI technique. Both surgical procedures restored mechanical stability to the joints but they differed in the amount and type of stabilization achieved. We concluded that 3D sMRI can extend the diagnostic power of MRI from the current practice of slice-by-slice visualization to the assessment of mechanical function, the compromise in this function due to injury, and the effects of surgery.
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Details
- Title
- The effect of ankle ligament damage and surgical reconstructions on the mechanics of the ankle and subtalar joints revealed by three-dimensional stress MRI
- Creators
- S.I Ringleb - Department of Mechanical Engineering and Mechanics, Drexel University, 32nd and Chestnut Streets, Philadelphia, PA 19104, USAJ.K Udupa - Medical Image Processing Group, Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USAS Siegler - Department of Mechanical Engineering and Mechanics, Drexel University, 32nd and Chestnut Streets, Philadelphia, PA 19104, USAC.W Imhauser - Department of Mechanical Engineering and Mechanics, Drexel University, 32nd and Chestnut Streets, Philadelphia, PA 19104, USAB.E Hirsch - Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USAJ Liu - Medical Image Processing Group, Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USAD Odhner - Medical Image Processing Group, Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USAE Okereke - Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA 19104, USAN Roach - Department of Radiology, University of Pennsylvania, Philadelphia, PA 1910, USA
- Publication Details
- Journal of orthopaedic research, v 23(4), pp 743-749
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000230859500008
- Scopus ID
- 2-s2.0-21844435983
- Other Identifier
- 991014878279804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Orthopedics