Conference proceeding
3D stress MRI for studying the functional pathologies of the ankle complex
Proceedings of SPIE, Vol.5369(1), pp.722-729
Medical Imaging 2004: Physiology, Function, and Structure from Medical Images
04/30/2004
DOI: 10.1117/12.536433
Abstract
This project is a result of a marriage between two independent activities that existed for quite some time within two collaborative groups: (1) the development of a mechanical linkage device and its utilization to test externally the flexibility characteristics of the ankle complex under load; (2) the development of an
imaging and image analysis methodology to characterize the internal 3D movements of bones of the ankle complex. In the resulting methodology, which we term
(
for short), the ankle is
imaged in various foot configurations while held in place by the linkage device with controlled load proven to detect hindfoot instability. Subsequently the acquired images are subjected to a series of image processing and analysis steps to yield a set of parameters to describe the morphology, architecture, and kinematics of the bones of the ankle complex. These parameters are computed from images acquired for 14 normal ankles (of 7 subjects, including the left and the right ankle) and for 8 cadaveric ankles, the latter in five different situations consisting of intact ankle, two ligaments - the
and
- sectioned serially, and then after the two ligaments are surgically reconstructed by using two procedures. The results indicate that (i) there is considerable left-to-right symmetry in the ankles; (ii) ligament damage causes a few parameters to change significantly; (iii) both ankle and subtalar motions occur in inversion and anterior drawer; (iv)
motion is generally greater than
motion; (v) the surgical procedures are effective in achieving normalcy, yet there are differences in their performance.
Details
- Title: Subtitle
- 3D stress MRI for studying the functional pathologies of the ankle complex
- Creators
- Jayaram K Udupa - University of PennsylvaniaSorin Siegler - Drexel UniversityBruce E Hirsch - Drexel UniversityStacie I Ringleb - Drexel UniversityEnyi Okereke - University of PennsylvaniaNeil Roach - University of PennsylvaniaCarl W Imhauser - Drexel UniversityDewey Odhner - University of PennsylvaniaJiamin Liu - University of PennsylvaniaPunam K Saha - University of Pennsylvania
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of SPIE, Vol.5369(1), pp.722-729
- Conference
- Medical Imaging 2004: Physiology, Function, and Structure from Medical Images
- DOI
- 10.1117/12.536433
- ISSN
- 0277-786X
- Language
- English
- Date published
- 04/30/2004
- Academic Unit
- Radiology; Electrical and Computer Engineering
- Record Identifier
- 9984197211002771
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