Correlation between tibial tubercle-trochlear groove and 3D shiftactive extension in patellar dislocation: An active extension analysis based on three-dimensional measurements

IF 3.2 3区医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

European Journal of Radiology Pub Date : 2025-02-13 DOI:10.1016/j.ejrad.2025.111999

Mao Yuan , Wei Tian , Bo Sheng , Jia Li , Haitao Yang , Furong Lv , Yurou Chen

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引用次数: 0

Abstract

Purpose

To investigate the correlation between 3D shift_{active extension} (lateral patellar shift in active extension position based on newly established 3D measurement method) and static tibial tubercle-trochlear groove (TT-TG) distance in full knee extension with muscle relaxation.

Methods

42 knees of 24 patients with recurrent patellar dislocation were included in the study group and 38 knees of 30 subjects were included in the control group. TT-TG distance, bisect offset index_{muscle relaxation}, bisect offset index_{active extension} and 3D shift_{active extension} were measured to investigate the correlation between patellar lateral shift measurements and TT-TG distance.

Results

In the recurrent patellar dislocation group, the correlation between TT-TG distance and 3D shift_{active extension} (r = 0.76 [95 % CI, 0.61 to 0.86]) was significantly higher than correlation between TT-TG distance and bisect offset index_{active extension} (r = 0.61 [95 % CI, 0.32 to 0.79]) and correlation between TT-TG distance and bisect offset index_{muscle relaxation} (r = 0.6 [95 % CI, 0.32 to 0.80]), with p = 0.01 and p = 0.03, respectively.

Conclusion

Significantly stronger correlation between TT-TG distance and 3D shift_{active extension} in patients with patellar dislocation was observed in this study. 3D shift_{active extension} could be considered as a preoperative evaluation for tibial tubercle osteotomy to both characterize the patellar lateral shift and estimate tibial tubercle lateralization to simplify the preoperative assessment procedures. The 3D shift_{active extension} obtained under muscle contraction conditions both simulated the functional state of the patellofemoral joint and improved the limitations of the 2D measurements, helping to improve surgical decision-making for functional rehabilitation.

Level of Evidence: Level III

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来源期刊

European Journal of Radiology 医学-核医学

CiteScore

6.70

自引率

3.00%

发文量

398

审稿时长

42 days

期刊介绍： European Journal of Radiology is an international journal which aims to communicate to its readers, state-of-the-art information on imaging developments in the form of high quality original research articles and timely reviews on current developments in the field. Its audience includes clinicians at all levels of training including radiology trainees, newly qualified imaging specialists and the experienced radiologist. Its aim is to inform efficient, appropriate and evidence-based imaging practice to the benefit of patients worldwide.