Micromachined Tactile Sensor Array for RTSA
This work presents a polymer-based tactile capacitive sensor capable of measuring joint reaction forces of reverse total shoulder arthroplasty (RTSA). The capacitive sensor contains a polydimethylsiloxane (PDMS) dielectric layer with an array of electrodes. The sensor was designed in such a way that...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/12/11/1430 |
| _version_ | 1827676031029346304 |
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| author | Elliott C. Leinauer H. Mike Kim Jae W. Kwon |
| author_facet | Elliott C. Leinauer H. Mike Kim Jae W. Kwon |
| author_sort | Elliott C. Leinauer |
| collection | DOAJ |
| description | This work presents a polymer-based tactile capacitive sensor capable of measuring joint reaction forces of reverse total shoulder arthroplasty (RTSA). The capacitive sensor contains a polydimethylsiloxane (PDMS) dielectric layer with an array of electrodes. The sensor was designed in such a way that four components of glenohumeral contact forces can be quantified to help ensure proper soft tissue tensioning during the procedure. Fabricated using soft lithography, the sensor has a loading time of approximately 400 ms when a 14.13 kPa load is applied and has a sensitivity of 1.24 × 10<sup>−3</sup> pF/kPa at a load of 1649 kPa. A replica RTSA prothesis was 3D printed, and the sensor was mounted inside the humeral cap. Four static right shoulder positions were tested, and the results provided an intuitive graphical description of the pressure distribution across four quadrants of the glenohumeral joint contact surface. It may help clinicians choose a right implant size and offset that best fit a patient’s anatomy and reduce postoperative biomechanical complications such as dislocation and stress fracture of the scapula. |
| first_indexed | 2024-03-10T05:16:01Z |
| format | Article |
| id | doaj.art-a4d8f5c50bb74dca917264032260516b |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T05:16:01Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-a4d8f5c50bb74dca917264032260516b2023-11-23T00:27:27ZengMDPI AGMicromachines2072-666X2021-11-011211143010.3390/mi12111430Micromachined Tactile Sensor Array for RTSAElliott C. Leinauer0H. Mike Kim1Jae W. Kwon2Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO 65201, USADepartment of Orthopedic Surgery, University of Missouri, Columbia, MO 65201, USADepartment of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO 65201, USAThis work presents a polymer-based tactile capacitive sensor capable of measuring joint reaction forces of reverse total shoulder arthroplasty (RTSA). The capacitive sensor contains a polydimethylsiloxane (PDMS) dielectric layer with an array of electrodes. The sensor was designed in such a way that four components of glenohumeral contact forces can be quantified to help ensure proper soft tissue tensioning during the procedure. Fabricated using soft lithography, the sensor has a loading time of approximately 400 ms when a 14.13 kPa load is applied and has a sensitivity of 1.24 × 10<sup>−3</sup> pF/kPa at a load of 1649 kPa. A replica RTSA prothesis was 3D printed, and the sensor was mounted inside the humeral cap. Four static right shoulder positions were tested, and the results provided an intuitive graphical description of the pressure distribution across four quadrants of the glenohumeral joint contact surface. It may help clinicians choose a right implant size and offset that best fit a patient’s anatomy and reduce postoperative biomechanical complications such as dislocation and stress fracture of the scapula.https://www.mdpi.com/2072-666X/12/11/1430capacitive sensorglenohumeral joint forcereverse total shoulder arthroplasty (RTSA)polydimethylsiloxane (PDMS)pressure sensor |
| spellingShingle | Elliott C. Leinauer H. Mike Kim Jae W. Kwon Micromachined Tactile Sensor Array for RTSA Micromachines capacitive sensor glenohumeral joint force reverse total shoulder arthroplasty (RTSA) polydimethylsiloxane (PDMS) pressure sensor |
| title | Micromachined Tactile Sensor Array for RTSA |
| title_full | Micromachined Tactile Sensor Array for RTSA |
| title_fullStr | Micromachined Tactile Sensor Array for RTSA |
| title_full_unstemmed | Micromachined Tactile Sensor Array for RTSA |
| title_short | Micromachined Tactile Sensor Array for RTSA |
| title_sort | micromachined tactile sensor array for rtsa |
| topic | capacitive sensor glenohumeral joint force reverse total shoulder arthroplasty (RTSA) polydimethylsiloxane (PDMS) pressure sensor |
| url | https://www.mdpi.com/2072-666X/12/11/1430 |
| work_keys_str_mv | AT elliottcleinauer micromachinedtactilesensorarrayforrtsa AT hmikekim micromachinedtactilesensorarrayforrtsa AT jaewkwon micromachinedtactilesensorarrayforrtsa |