Ki Hyuk Sung, MD Relationship between rotational gait parameters and torsional bony deformities in patients with diplegic cerebral palsy Seoul National.

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Ki Hyuk Sung, MD Relationship between rotational gait parameters and torsional bony deformities in patients with diplegic cerebral palsy Seoul National University Bundang Hospital

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Introduction Intoeing gait is a common gait problem in patients with diplegic CP, which affects gait efficacy and cosmesis. Femoral anteversion and tibial torsion are usually focuses of attention in evaluation and treatment.

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Introduction However, there might be other structural problem affecting rotational gait parameters. In some clinical situation, degree of femoral anteversion and tibial torsion do not necessarily reflect the severity of the rotational gait problems.

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Purpose of the study To investigate comprehensively relationships between rotational gait parameters and torsional bony alignment, including different deformity types, in patients with diplegic CP

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Materials and Methods Retrospective design Inclusion –Ambulatory patients with diplegic CP –3D gait analysis –Torsional CT

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL 3D gait parameters Mean foot progression angle in stance Mean hip rotation Mean tibia rotation Mean pelvic rotation Adjusted foot progression angle –Foot progression angle – pelvic rotation

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Radiographic measurements Acetabular version on CT Femoral anteversion on CT Tibial torsion on CT Knee torsion on CT AP talo-1 st metatarsal angle on weightbearing AP foot radiographs

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Acetabular version

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Femoral anteversion

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Knee torsion

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Tibial torsion

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL AP talo-1 st metatarsal angle

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Reliability of radiographic measurement 2 orthopaedic surgeons, 15 patients ICC (intraclass correlation coefficient) & MAD (mean absolute difference)

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Relation btw radiographic measurements & gait parameters Pearson’s correlation coefficient

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Multiple regression anlysis Structural torsional deformities (CT and radiographic measurements) significantly contributing to adjusted foot progression angle

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Results

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL

Conclusions Adjusted foot pregression angle was more relevant than foot progression angle. Femoral anteversion and tibial torsion were found to be the significant structural deformities that affect adjusted foot progression angle

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Conclusions However, femoral anteversion and tibial torsion were found to explain only 24.7% of adjusted foot progression angle Other structural factors or muscle balance need to be considered.

SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL ◦ SEOUL NATIONAL UNIVERSITY BUNDANG HOSPITAL Thank you !