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Thesis
Inter and intra-subject variations in alignment between the bones of the hindfoot in bilateral standing for the normal population
Master of Science (M.S.), Drexel University
Sep 2020
DOI:
https://doi.org/10.17918/00000189
Abstract
The primary reason for the need of an ankle surgery comes from damage to the ankle, due to fracture, arthritis, chronic instability, Varus/Valgus alignment. Ankle arthritis is a condition in which the articulate surfaces of the bones have damaged cartilage leading to damaged bones and misaligned joints. In extreme conditions of this disease surgical corrections, such as Ankle Fusion or Total Ankle Replacement (TAR) may be required. The current biomechanics community lacks the methodology of defining consistent reference frames using only the patient's anatomy to quantitatively measure and advocate corrections. The explicit reference frames defined by the researchers in the past describe the motion of the joints and do not define reference frames for individual bones and the implicit descriptions used by the orthopedic community do not provide complete description the reference frames over the bones as well. The key goals of the project are firstly, to create reference frame on each bone based on the morphology alone. Secondly using the defined reference frames create a database of normal neutral alignment in the joints of the hindfoot that would serve as the reference for surgical correction. Finally, to determine level of symmetry in the Left-Right foot alignment to establish the possibility of using the normal contralateral side to guide alignment on a patient specific basis. Eleven pairs (22 samples) of normal feet were processed to create said normal database. Seven pairs of normal feet were used in the study of bilateral symmetry in weight-bearing (WB) standing position. One Pair of abnormal (Valgus) sample was used as an example to compare with derived range from the database.
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Details
- Title
- Inter and intra-subject variations in alignment between the bones of the hindfoot in bilateral standing for the normal population
- Creators
- Dhwanit Vispute
- Contributors
- Sorin Siegler (Advisor)
- Awarding Institution
- Drexel University
- Degree Awarded
- Master of Science (M.S.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- xv, 81 pages
- Resource Type
- Thesis
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Mechanical Engineering (and Mechanics) [Historical]; Drexel University
- Other Identifier
- 991014695146404721