ArticleOrthopaedic journal of sports medicine2021
Comparing the Tibial Tuberosity-Trochlear Groove Distance Between CT and MRI in Skeletally Immature Patients With and Without Patellar Instability.
Article in Orthopaedic journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.
- Assessment of the reliability and validity of imaging measurements for patellofemoral instability: an updated systematic review.Skeletal radiology · 2022Pooled it
- Assessment and management of torsional malalignment in paediatric patients with patellofemoral joint instability.Journal of children's orthopaedics · 2026Article
- Patellofemoral instability: Anatomy, imaging techniques, and clinically relevant measurements.Skeletal radiology · 2026Review
- Influence of the screw-home mechanism on TT-TG distance: a 3D kinematic simulation study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026Article
- Artificial Intelligence for the Diagnosis and Management of Patellofemoral Instability: A Comprehensive Review.Diagnostics (Basel, Switzerland) · 2025Review
- Tibial tuberosity-trochlea groove distance is dependent on flexion angle and intra-articular version in different magnetic resonance imaging recording techniques.Journal of experimental orthopaedics · 2025Article
- Comparing Tibiofemoral Rotation Measurements Between Computed Tomography and Magnetic Resonance Imaging in Patients With Patellofemoral Instability.Orthopaedic journal of sports medicine · 2025Article
- Review
- Simultaneous MPFL reconstruction and guided growth result in low rates of recurrent patellofemoral instability.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2024Article
- Comparison of Habitual Versus Recurrent Patellar Dislocation in Children and Adolescents: Differences in Radiological Features.Orthopaedic journal of sports medicine · 2023Article
- Comparison of post-operative outcomes following anterior cruciate ligament reconstruction between patients with vs. without elevated tibial tubercle-trochlear groove (TT-TG) distance.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Reliability of the TT-TG Index Versus TT-TG Distance on MRI: Morphometric Analyses in Asian Children and Adolescents.Orthopaedic journal of sports medicine · 2023Article
- Higher pathologic threshold of increased tibial tuberosity-trochlear groove distance should be considered for taller patients.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- Radiographic Evaluation of Pediatric Patients with Patellofemoral Instability.Current reviews in musculoskeletal medicine · 2022Review
- Reliability of the Tibial Tubercle-Roman Arch Distance for Evaluating Tibial Tubercle Malposition and Predicting Patellar Dislocation via Magnetic Resonance Imaging.Orthopaedic journal of sports medicine · 2022Article
- Future Directions in Patellofemoral Imaging and 3D Modeling.Current reviews in musculoskeletal medicine · 2022Review
- Diagnostic Performance of MRI Versus CT in the Evaluation of Intra-articular Osteochondral Fracture in Pediatric Patients With Acute Traumatic Lateral Patellar Dislocation.Orthopaedic journal of sports medicine · 2022Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe tibial tubercle-trochlear groove (TT-TG) distance was originally described for computed tomography (CT), but it has been measured on magnetic resonance imaging (MRI) in patients with patellar instability (PI). Whether the TT-TG measured on CT versus MRI can be considered equivalent in skeletally immature children remains unclear. PURPOSE: To investigate in skeletally immature patients (1) the effects of CT versus MRI imaging modality and cartilage versus bony landmarks on consistency of TT-TG measurement, (2) the difference between CT and MRI measurements of the TT-TG, and (3) the difference in TT-TG between patients with and without PI. STUDY
designCross-sectional study; Level of evidence, 3.
methodsWe retrospectively identified 24 skeletally immature patients with PI and 24 patients with other knee disorders or injury but without PI. The bony and cartilaginous TT-TG distances on CT and MRI were measured by 2 researchers, and related clinical data were collected. The interrater, interperiod (bony vs cartilaginous), and intermethod (CT vs MRI) reliabilities of TT-TG measurement were assessed with intraclass correlation coefficients.
resultsThe 48 study patients (19 boys, 29 girls) had a mean age of 11.3 years (range, 7-14 years). TT-TG measurements had excellent interrater reliability and good or excellent interperiod reliability but fair or poor intermethod reliability. TT-TG distance was greater on CT versus MRI (mean difference, 4.07 mm; 95% CI, 2.6-5.5 mm), and cartilaginous distance was greater than bony distance (mean difference, 2.3 mm; 95% CI, 0.79-3.8 mm). The TT-TG measured on CT was found to increase with the femoral width. Patients in the PI group had increased TT-TG distance compared with those in the control group, regardless of landmarks or modality used (
conclusionFor skeletally immature patients, the TT-TG distance could be evaluated on MRI, regardless of whether cartilage or bony landmarks were used. Its value could not be interchanged with CT according to our results; however, further research on this topic is needed.
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