1. Influence of the image levels of distal femur on the measurement of tibial tubercle-trochlear groove distance—a comparative study
- Author
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Fuyou Wang, Bing Deng, Cheng Chen, Xiaojun Duan, Li Yin, Liu Yang, and Ran Xiong
- Subjects
Adult ,Male ,Multiple image ,medicine.medical_specialty ,TT-TG distance ,Trochlear groove ,Young Adult ,Distal femur ,medicine ,Humans ,Knee ,Orthopedics and Sports Medicine ,Femur ,Retrospective Studies ,Tibia ,medicine.diagnostic_test ,business.industry ,Significant difference ,Magnetic resonance imaging ,Anatomy ,Magnetic Resonance Imaging ,Femoral trochlea ,Orthopedic surgery ,Female ,Surgery ,Tomography ,Mr images ,Tomography, X-Ray Computed ,business ,Image level ,Research Article ,CT ,MRI - Abstract
Background The purpose of the present study was to determine whether the image levels of the distal femur affected the measurement of the tibial tubercle-trochlear groove (TT-TG) distance. Methods Thirty sets of computer tomography (CT) images and 30 sets of MR images of the knee were evaluated. The TT-TG distance was quantified at multiple image levels in 1.5-mm increments, covering the proximodistal range of the trochlear groove. The CT measurement was based on osseous landmarks; the magnetic resonance imaging (MRI) measurement was based on cartilaginous and osseous landmarks. Results The average TT-TG distances measured with CT, with MRI based on cartilaginous landmarks, and with MRI based on osseous landmarks were 15.74 mm (SD 3.83 mm), 12.8 mm (SD 5.67 mm), and 12.36 mm (SD 5.58 mm), respectively. No significant difference was found across image levels in the CT measurement and the MRI measurement upon osseous landmarks (P = 0.64, P = 0.11); yet, the difference was significant in the MRI measurement upon cartilaginous landmarks (P
- Published
- 2015
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