Objectives: To evaluate lower extremity alignments in football players with and without genu varum using magnetic resonance imaging (MRI), to determine the mechanisms underlying malalignment and the factors contributing to it. Methods: This is a prospective case-control study with football players with/without lower extremity malalignment. Full-length lower extremity MRI was used to evaluate the lower extremity alignment parameters. In addition, the isokinetic strength of the concentric knee extensor-flexor and concentric hip abductor-adductor muscles was measured using an isokinetic dynamometer at two different angular velocities: 60˚/sec and 180˚/sec. The investigators created a logistic regression model to investigate whether the alignment parameters used to evaluate lower extremity alignment in football players are risk factors for the development of genu varum.
Age range
16 Years – 19 Years
Sex
MALE
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Mechanical axis deviation (MAD)
Timeframe: From enrollment to the end of measurements at 3 weeks
Femoral anteversion (FA)
Timeframe: From enrollment to the end of measurements at 3 weeks
Medial proximal tibial angle (MPTA)
Timeframe: From enrollment to the end of measurements at 3 weeks
Tibial torsion (TT)
Timeframe: From enrollment to the end of measurements at 3 weeks
Tibial tubercle-trochlear groove (TT-TG) distance
Timeframe: From enrollment to the end of measurements at 3 weeks
Tibial tubercle-posterior cruciate ligament (TT-PCL)
Timeframe: From enrollment to the end of measurements at 3 weeks
Joint line convergence angle (JLCA)
Timeframe: From enrollment to the end of measurements at 3 weeks
Hip-knee-ankle angle (HKA)
Timeframe: From enrollment to the end of measurements at 3 weeks
Mechanical lateral distal femoral angle (mLDFA)
Timeframe: From enrollment to the end of measurements at 3 weeks
Quadriceps femoris angle (Q angle)
Timeframe: From enrollment to the end of measurements at 3 weeks