Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision
Abstract Background A small, but unstable, saw-gap may hinder bone-bridging and induce development of painful sternal dehiscence. We propose the use of Radiostereometric Analysis (RSA) for evaluation of sternal instability and present a method validation. Methods Four bone analogs (phantoms) were st...
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| Format: | Article |
| Language: | English |
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BMC
2018-05-01
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| Series: | Journal of Cardiothoracic Surgery |
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| Online Access: | http://link.springer.com/article/10.1186/s13019-018-0735-4 |
| _version_ | 1818498434381905920 |
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| author | Rikke Falsig Vestergaard Kjeld Søballe John Michael Hasenkam Maiken Stilling |
| author_facet | Rikke Falsig Vestergaard Kjeld Søballe John Michael Hasenkam Maiken Stilling |
| author_sort | Rikke Falsig Vestergaard |
| collection | DOAJ |
| description | Abstract Background A small, but unstable, saw-gap may hinder bone-bridging and induce development of painful sternal dehiscence. We propose the use of Radiostereometric Analysis (RSA) for evaluation of sternal instability and present a method validation. Methods Four bone analogs (phantoms) were sternotomized and tantalum beads were inserted in each half. The models were reunited with wire cerclage and placed in a radiolucent separation device. Stereoradiographs (n = 48) of the phantoms in 3 positions were recorded at 4 imposed separation points. The accuracy and precision was compared statistically and presented as translations along the 3 orthogonal axes. 7 sternotomized patients were evaluated for clinical RSA precision by double-examination stereoradiographs (n = 28). Results In the phantom study, we found no systematic error (p > 0.3) between the three phantom positions, and precision for evaluation of sternal separation was 0.02 mm. Phantom accuracy was mean 0.13 mm (SD 0.25). In the clinical study, we found a detection limit of 0.42 mm for sternal separation and of 2 mm for anterior-posterior dislocation of the sternal halves for the individual patient. Conclusion RSA is a precise and low-dose image modality feasible for clinical evaluation of sternal stability in research. Trial registration ClinicalTrials.gov Identifier: NCT02738437, retrospectively registered. |
| first_indexed | 2024-12-10T18:58:46Z |
| format | Article |
| id | doaj.art-0548895e17734c158b1b2a68814930af |
| institution | Directory Open Access Journal |
| issn | 1749-8090 |
| language | English |
| last_indexed | 2024-12-10T18:58:46Z |
| publishDate | 2018-05-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Cardiothoracic Surgery |
| spelling | doaj.art-0548895e17734c158b1b2a68814930af2022-12-22T01:37:04ZengBMCJournal of Cardiothoracic Surgery1749-80902018-05-011311510.1186/s13019-018-0735-4Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precisionRikke Falsig Vestergaard0Kjeld Søballe1John Michael Hasenkam2Maiken Stilling3Dept. of Cardio-Thoracic Surgery, Aarhus University HospitalDept. of Orthopedic Surgery, Aarhus University HospitalDept. of Clinical Medicine, Aarhus UniversityDept. of Orthopedic Surgery, Aarhus University HospitalAbstract Background A small, but unstable, saw-gap may hinder bone-bridging and induce development of painful sternal dehiscence. We propose the use of Radiostereometric Analysis (RSA) for evaluation of sternal instability and present a method validation. Methods Four bone analogs (phantoms) were sternotomized and tantalum beads were inserted in each half. The models were reunited with wire cerclage and placed in a radiolucent separation device. Stereoradiographs (n = 48) of the phantoms in 3 positions were recorded at 4 imposed separation points. The accuracy and precision was compared statistically and presented as translations along the 3 orthogonal axes. 7 sternotomized patients were evaluated for clinical RSA precision by double-examination stereoradiographs (n = 28). Results In the phantom study, we found no systematic error (p > 0.3) between the three phantom positions, and precision for evaluation of sternal separation was 0.02 mm. Phantom accuracy was mean 0.13 mm (SD 0.25). In the clinical study, we found a detection limit of 0.42 mm for sternal separation and of 2 mm for anterior-posterior dislocation of the sternal halves for the individual patient. Conclusion RSA is a precise and low-dose image modality feasible for clinical evaluation of sternal stability in research. Trial registration ClinicalTrials.gov Identifier: NCT02738437, retrospectively registered.http://link.springer.com/article/10.1186/s13019-018-0735-4SternumWound healingBone healing |
| spellingShingle | Rikke Falsig Vestergaard Kjeld Søballe John Michael Hasenkam Maiken Stilling Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision Journal of Cardiothoracic Surgery Sternum Wound healing Bone healing |
| title | Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision |
| title_full | Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision |
| title_fullStr | Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision |
| title_full_unstemmed | Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision |
| title_short | Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision |
| title_sort | sternal instability measured with radiostereometric analysis a study of method feasibility accuracy and precision |
| topic | Sternum Wound healing Bone healing |
| url | http://link.springer.com/article/10.1186/s13019-018-0735-4 |
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