A novel digital arthrometer to measure anterior tibial translation
Abstract Background Measurement of knee laxity after anterior cruciate ligament (ACL) injury is crucial for appropriate treatment and rehabilitation decision-making. This study examined the potential of a new digital arthrometer (Ligs, Innomotion, Shanghai, China) to quantify anterior tibial transla...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-02-01
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| Series: | Journal of Orthopaedic Surgery and Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13018-022-03497-4 |
| _version_ | 1827983286880698368 |
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| author | Danni Wu Donghai Wang Yongjie Han Luqi Guo Shaobai Wang |
| author_facet | Danni Wu Donghai Wang Yongjie Han Luqi Guo Shaobai Wang |
| author_sort | Danni Wu |
| collection | DOAJ |
| description | Abstract Background Measurement of knee laxity after anterior cruciate ligament (ACL) injury is crucial for appropriate treatment and rehabilitation decision-making. This study examined the potential of a new digital arthrometer (Ligs, Innomotion, Shanghai, China) to quantify anterior tibial translation (ATT) in patients with ACL injuries and in healthy subjects. Methods A total of 60 participants included 30 subjects with single-leg ACL injuries and 30 healthy subjects included as controls. The lower leg was immobilized. The thruster is positioned posterior to the lower leg and parallel to the tibial tuberosity in the sagittal plane. The load is applied vertically to the tibia under a dynamic load of 0–150 N, with continuous displacement recorded. The intrarater and interrater reliability will be examined. ATT and side-to-side differences (SSD) between the control and ACL injury groups were compared. Receiver operating characteristic (ROC) curves were analyzed, and the area under the curve (AUC) was calculated to determine the diagnostic accuracy of the Ligs. Results The interrater ICC was 0.909 and the intrarater ICC was 0.943. Significant differences in the SSD were observed between the control and ACL injury groups (for all P < 0.05), with the largest effect size (ES = 1.12) at 80 N. When comparing ATT at different loads between injured and healthy sides in the ACL injury group, displacement was statistically significant at different loads. At a load of 150 N, the AUC was the maximum (0.857) and the sensitivity and specificity were 0.87 and 0.73, respectively. Conclusions A digital arthrometer can be used as a quantitative instrument to quantify knee laxity. Quantitative measurement of ATT and SSD under controlled loading can be an objective and effective tool for clinical practice. |
| first_indexed | 2024-04-09T22:46:19Z |
| format | Article |
| id | doaj.art-cefa7c679ee94089ae02ad1753850542 |
| institution | Directory Open Access Journal |
| issn | 1749-799X |
| language | English |
| last_indexed | 2024-04-09T22:46:19Z |
| publishDate | 2023-02-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj.art-cefa7c679ee94089ae02ad17538505422023-03-22T11:52:39ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2023-02-011811810.1186/s13018-022-03497-4A novel digital arthrometer to measure anterior tibial translationDanni Wu0Donghai Wang1Yongjie Han2Luqi Guo3Shaobai Wang4Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of SportDepartment of Orthopedics, The First Affiliated Hospital of Soochow University, Orthopedic Institute of Soochow UniversityLaboratory of Biomechanics and Engineering, InnomotionKey Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of SportKey Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of SportAbstract Background Measurement of knee laxity after anterior cruciate ligament (ACL) injury is crucial for appropriate treatment and rehabilitation decision-making. This study examined the potential of a new digital arthrometer (Ligs, Innomotion, Shanghai, China) to quantify anterior tibial translation (ATT) in patients with ACL injuries and in healthy subjects. Methods A total of 60 participants included 30 subjects with single-leg ACL injuries and 30 healthy subjects included as controls. The lower leg was immobilized. The thruster is positioned posterior to the lower leg and parallel to the tibial tuberosity in the sagittal plane. The load is applied vertically to the tibia under a dynamic load of 0–150 N, with continuous displacement recorded. The intrarater and interrater reliability will be examined. ATT and side-to-side differences (SSD) between the control and ACL injury groups were compared. Receiver operating characteristic (ROC) curves were analyzed, and the area under the curve (AUC) was calculated to determine the diagnostic accuracy of the Ligs. Results The interrater ICC was 0.909 and the intrarater ICC was 0.943. Significant differences in the SSD were observed between the control and ACL injury groups (for all P < 0.05), with the largest effect size (ES = 1.12) at 80 N. When comparing ATT at different loads between injured and healthy sides in the ACL injury group, displacement was statistically significant at different loads. At a load of 150 N, the AUC was the maximum (0.857) and the sensitivity and specificity were 0.87 and 0.73, respectively. Conclusions A digital arthrometer can be used as a quantitative instrument to quantify knee laxity. Quantitative measurement of ATT and SSD under controlled loading can be an objective and effective tool for clinical practice.https://doi.org/10.1186/s13018-022-03497-4Knee laxityAnterior tibial translationDigital arthrometerAnterior cruciate ligamentQuantitative study |
| spellingShingle | Danni Wu Donghai Wang Yongjie Han Luqi Guo Shaobai Wang A novel digital arthrometer to measure anterior tibial translation Journal of Orthopaedic Surgery and Research Knee laxity Anterior tibial translation Digital arthrometer Anterior cruciate ligament Quantitative study |
| title | A novel digital arthrometer to measure anterior tibial translation |
| title_full | A novel digital arthrometer to measure anterior tibial translation |
| title_fullStr | A novel digital arthrometer to measure anterior tibial translation |
| title_full_unstemmed | A novel digital arthrometer to measure anterior tibial translation |
| title_short | A novel digital arthrometer to measure anterior tibial translation |
| title_sort | novel digital arthrometer to measure anterior tibial translation |
| topic | Knee laxity Anterior tibial translation Digital arthrometer Anterior cruciate ligament Quantitative study |
| url | https://doi.org/10.1186/s13018-022-03497-4 |
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