A device for quantitative assessment of thumb Ulnar Collateral Ligament injury
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2018
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| Online Access: | http://hdl.handle.net/1721.1/115659 |
| _version_ | 1826196265170370560 |
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| author | Cervantes, Thomas Michael |
| author2 | Alexander Slocum. |
| author_facet | Alexander Slocum. Cervantes, Thomas Michael |
| author_sort | Cervantes, Thomas Michael |
| collection | MIT |
| description | Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018. |
| first_indexed | 2024-09-23T10:24:10Z |
| format | Thesis |
| id | mit-1721.1/115659 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:24:10Z |
| publishDate | 2018 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1156592019-04-12T23:05:57Z A device for quantitative assessment of thumb Ulnar Collateral Ligament injury Cervantes, Thomas Michael Alexander Slocum. Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering. Mechanical Engineering. Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018. Cataloged from PDF version of thesis. Includes bibliographical references (pages 103-105). Injury to the Ulnar Collateral Ligament (UCL) of the thumb, known as "Skier's Thumb," is treated by surgical repair for complete tears, or by splinting for partial tears. Because of this radical difference in treatment options, diagnostic accuracy is critical. The primary mechanism of diagnosis is through a clinical assessment of joint integrity. This method requires a high degree of examiner skill and experience, and is inherently qualitative. Secondary diagnosis through magnetic resonance imaging (MRI) is often required to ensure accurate diagnosis. This additional testing delays the treatment and adds to the cost of care. A method to quantitatively assess the thumb UCL in a clinical setting is desired. This thesis presents the deterministic design of a device to quantitatively measure the stiffness of the thumb UCL. A stepper motor is used to rotate the thumb, while a cantilever load cell is used to measure torque. The device is designed to be operated by the physician, and has alignment features to properly orient the motor axis of rotation. Several safety features were incorporated into the device, including a magnetic breakaway that prevents applied thumb force from exceeding 10 N. The prototype was constructed, and preliminary testing was performed on healthy human subjects. Peak thumb torque was measured at 213.5 ± 19.2 N-mm, and peak stiffness was calculated to be 4.70 ± 0.39 N-mm/degree. Potential pathways for further device testing and improvement are outlined. The Thumb UCL Device has the potential to improve the speed of injury diagnosis and reduce the need for imaging studies. by Thomas Michael Cervantes. S.M. 2018-05-23T16:29:05Z 2018-05-23T16:29:05Z 2018 2018 Thesis http://hdl.handle.net/1721.1/115659 1036985390 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 105 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Cervantes, Thomas Michael A device for quantitative assessment of thumb Ulnar Collateral Ligament injury |
| title | A device for quantitative assessment of thumb Ulnar Collateral Ligament injury |
| title_full | A device for quantitative assessment of thumb Ulnar Collateral Ligament injury |
| title_fullStr | A device for quantitative assessment of thumb Ulnar Collateral Ligament injury |
| title_full_unstemmed | A device for quantitative assessment of thumb Ulnar Collateral Ligament injury |
| title_short | A device for quantitative assessment of thumb Ulnar Collateral Ligament injury |
| title_sort | device for quantitative assessment of thumb ulnar collateral ligament injury |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/115659 |
| work_keys_str_mv | AT cervantesthomasmichael adeviceforquantitativeassessmentofthumbulnarcollateralligamentinjury AT cervantesthomasmichael deviceforquantitativeassessmentofthumbulnarcollateralligamentinjury |