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Defining the Role of TT-TG and TT-PCL in the Diagnosis of Lateralization of the Tibial Tubercle in Recurrent Patellar Dislocation
Weili FU
Sichuan University West China Hospital
Corresponding Author
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Musculoskeletal Disorders.
Background
The radiological indicators can help doctors determine whether to make the tibial tubercle transfer. But that which indicator is better is still in question.
Methods
117 knees in 103 patients who had gone through patellar surgery and 60 knees in 58 patients who had no history of patellar dislocation from 2014 to 2019 were analyzed. Significant differences of tibial tubercle–trochlear groove (TT-TG) on CT and tibial tubercle–posterior cruciate ligament (TT-PCL) on MRI between the case group and the control group were estimated by an unpaired t test. Significant differences between TT-TG on CT and TT-TG on MRI were estimated by a paired t test. The correlation between TT-PCL on MRI and tibial width was estimated by Pearson test. Receiver operating characteristic (ROC) curves and the area under the ROC curve (AUC) were measured to assess the diagnostic accuracy of TT-TG and TT-PCL on MRI.
Results
The intraclass correlation coefficient (ICC) for inter-method of TT-TG evaluated by two raters was were 0.566. When comparing TT-TG on CT with that on MRI, the mean difference was 2.5mm (p<0.001). The mean TT-TG difference on CT between the case group and the control group was 5.3 mm, which was significantly bigger than the mean TT-PCL difference on MRI of 1.2mm(p<0.001). AUC of TT-TG on CT and TT-PCL were 0.838 and 0.580 (P<0.001). TT-PCL correlated with tibial width (r=0.450, P<0.001).
Conclusion
A statistically significance and a fair ICC proved that TT-TG could not be used interchangeably. The bigger mean difference between the case group and the control group and better AUC proved that TT-TG on CT might be an indicator more suitable for measuring the lateralization of the tibial tubercle. And TT-TG should be considered as an individual parameter because of the significant correlation with tibial width.
Keywords
TT-PCL, AUC, TT-TG, Diagnosis
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Peer Review Timeline
CURRENT STATUS: Published
Version (no preprint)
Posted 03 Dec, 2020
Review #1 received
Received 03 Dec, 2020
Reviewer #1 agreed
On 03 Dec, 2020
Reviewers invited
Invitations sent on 30 Nov, 2020
Editor assigned
On 29 Nov, 2020
Editor invited
On 29 Nov, 2020
Submission checks complete
On 26 Nov, 2020
This version was not preprinted
Version 1
Posted 18 Sep, 2020
Published
On 08 Jan, 2021
Published
On 08 Jan, 2021
No community comments so far
Editorial decision: Major revision
On 20 Nov, 2020
Review #2 received
Received 10 Oct, 2020
Review #1 received
Received 10 Oct, 2020
Reviewer #2 agreed
On 22 Sep, 2020
Reviewers invited
Invitations sent on 19 Sep, 2020
Reviewer #1 agreed
On 19 Sep, 2020
Editor assigned
On 08 Sep, 2020
Submission checks complete
On 07 Sep, 2020
Editor invited
On 07 Sep, 2020
First submitted
On 04 Sep, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Laboratory Diagnostics
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This preprint is under consideration at BMC Musculoskeletal Disorders. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Defining the Role of TT-TG and TT-PCL in the Diagnosis of Lateralization of the Tibial Tubercle in Recurrent Patellar Dislocation
Weili FU
Sichuan University West China Hospital
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
Version (no preprint)
Posted 03 Dec, 2020
Review #1 received
Received 03 Dec, 2020
Reviewer #1 agreed
On 03 Dec, 2020
Reviewers invited
Invitations sent on 30 Nov, 2020
Editor assigned
On 29 Nov, 2020
Editor invited
On 29 Nov, 2020
Submission checks complete
On 26 Nov, 2020
This version was not preprinted
Version 1
Posted 18 Sep, 2020
Published
On 08 Jan, 2021
Published
On 08 Jan, 2021
No community comments so far
Editorial decision: Major revision
On 20 Nov, 2020
Review #2 received
Received 10 Oct, 2020
Review #1 received
Received 10 Oct, 2020
Reviewer #2 agreed
On 22 Sep, 2020
Reviewers invited
Invitations sent on 19 Sep, 2020
Reviewer #1 agreed
On 19 Sep, 2020
Editor assigned
On 08 Sep, 2020
Submission checks complete
On 07 Sep, 2020
Editor invited
On 07 Sep, 2020
First submitted
On 04 Sep, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Laboratory Diagnostics
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Musculoskeletal Disorders.
Background
The radiological indicators can help doctors determine whether to make the tibial tubercle transfer. But that which indicator is better is still in question.
Methods
117 knees in 103 patients who had gone through patellar surgery and 60 knees in 58 patients who had no history of patellar dislocation from 2014 to 2019 were analyzed. Significant differences of tibial tubercle–trochlear groove (TT-TG) on CT and tibial tubercle–posterior cruciate ligament (TT-PCL) on MRI between the case group and the control group were estimated by an unpaired t test. Significant differences between TT-TG on CT and TT-TG on MRI were estimated by a paired t test. The correlation between TT-PCL on MRI and tibial width was estimated by Pearson test. Receiver operating characteristic (ROC) curves and the area under the ROC curve (AUC) were measured to assess the diagnostic accuracy of TT-TG and TT-PCL on MRI.
Results
The intraclass correlation coefficient (ICC) for inter-method of TT-TG evaluated by two raters was were 0.566. When comparing TT-TG on CT with that on MRI, the mean difference was 2.5mm (p<0.001). The mean TT-TG difference on CT between the case group and the control group was 5.3 mm, which was significantly bigger than the mean TT-PCL difference on MRI of 1.2mm(p<0.001). AUC of TT-TG on CT and TT-PCL were 0.838 and 0.580 (P<0.001). TT-PCL correlated with tibial width (r=0.450, P<0.001).
Conclusion
A statistically significance and a fair ICC proved that TT-TG could not be used interchangeably. The bigger mean difference between the case group and the control group and better AUC proved that TT-TG on CT might be an indicator more suitable for measuring the lateralization of the tibial tubercle. And TT-TG should be considered as an individual parameter because of the significant correlation with tibial width.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9