AANA19 Knee Access Pass-The Vertical Tibial Tubercle-Trochlear Groove Distance as a Measurement of Sagittal Imbalance in Patients with Symptomatic Patellofemoral Chondral Lesions-Dr. Drew Lansdown, M.D.

The Vertical Tibial Tubercle-Trochlear Groove Distance as a Measurement of Sagittal Imbalance in Patients with Symptomatic Patellofemoral Chondral Lesions-Dr. Drew Lansdown, M.D.

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Video Summary

This study investigated the sagittal alignment of the tibial tubercle relative to the trochlear groove (vertical TTTG) in patients with and without patellofemoral cartilage lesions. Analyzing MRIs and clinical data from three patient groups, researchers found that symptomatic patients with patellofemoral cartilage lesions had a significantly more posterior tibial tubercle position compared to controls. The vertical TTTG measurement demonstrated high reproducibility and may influence patellofemoral joint loading. These findings suggest vertical TTTG could be valuable for surgical planning, such as osteotomies, although further research is necessary to define normal versus abnormal ranges.

Keywords

sagittal alignment

tibial tubercle

trochlear groove

patellofemoral cartilage lesions

vertical TTTG