2021 Annual Meeting Knee Access Pass-SPONTANEOUS CORRECTION OF EXTERNAL TIBIOFEMORAL ROTATIONAL DEFORMITY AND TIBIAL TUBEROSITY-TROCHLEAR GROOVE MEASUREMENTS OCCURS AFTER MEDIAL PATELLOFEMORAL LIGAMENT RECONSTRUCTION IN FIXED OR OBLIGATORY DISLOCATORS

SPONTANEOUS CORRECTION OF EXTERNAL TIBIOFEMORAL ROTATIONAL DEFORMITY AND TIBIAL TUBEROSITY-TROCHLEAR GROOVE MEASUREMENTS OCCURS AFTER MEDIAL PATELLOFEMORAL LIGAMENT RECONSTRUCTION IN FIXED OR OBLIGATORY DISLOCATORS

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Video Summary

This presentation explores inter-articular tibial-femoral rotation's role in pediatric patella instability, including severe cases with fixed or obligatory dislocations. Prior research linked femoral torsion to instability, but joint rotation itself was less studied. The study compared normal, standard instability, and severe groups via MRIs, finding significantly increased external tibial rotation in unstable knees. Postoperatively, severe cases showed improved rotation and decreased tibial tubercle–trochlear groove (TTTG) distance after MPFL reconstruction and realignment, indicating correction of 3D joint deformities. Limitations include static MRI assessment. Findings suggest patella realignment surgeries can improve joint rotation, impacting clinical approaches to patella instability.

Asset Caption

Dr. Daniel Green

Keywords

pediatric patella instability

inter-articular tibial-femoral rotation

femoral torsion

MPFL reconstruction

tibial tubercle–trochlear groove distance