Feet Turn Out
Overactive
(Lateral Gastrocnemius, Biceps Femoris-Short Head)
Lateral Gastrocnemius - accelerates plantar flexion and externally rotates tibia.
Biceps Femoris-Short Head - accelerates knee flexion and tibial external rotation.
Underactive
(Medial Gastrocnemius, Medial Hamstrings)
Medial Gastrocnemius - accelerates plantar flexion and internally rotates tibia.
Semimembranosus (Medial Hamstrings) - accelerates knee flexion, hip extension, and tibial internal rotation.
Semitendinosus (Medial Hamstrings) - accelerates knee flexion, hip extension, and tibial internal rotation.
Knee Valgus
Overactive
(Adductors, TFL/IT-Band)
Adductor Longus (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Adductor Magnus-Anterior Fibers (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Adductor Magnus, Posterior Fibers (Adductors) - accelerates hip adduction, extension, and external rotation.
Adductor Brevis (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Gracilis (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Pectineus (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Tensor Fascia Latae (TFL/IT-Band) - accelerates hip flexion, abduction, and internal rotation.
Underactive
(Gluteus Medius, Gluteus Maximus)
Gluteus Medius-Anterior Fibers (Gluteus Medius) - accelerates hip abduction and internal rotation.
Gluteus Medius-Posterior Fibers (Gluteus Medius) - accelerates hip abduction and external rotation.
Gluteus Maximus - accelerates hip extension and external rotation.
Knee Varus
Overactive
(Piriformis, Biceps Femoris-Long Head)
Piriformis - accelerates hip external rotation, abduction, and extension.
Biceps Femoris-Long Head - accelerates knee flexion, hip extension, and tibial external rotation.
Underactive
(Adductors, Medial Hamstrings)
Adductor Longus (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Adductor Magnus, Anterior Fibers (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Adductor Magnus, Posterior Fibers (Adductors) - accelerates hip adduction, extension, and external rotation.
Adductor Brevis (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Gracilis (Adductors) - accelerates hip adduction, flexion, and internal rotation; assists in tibial internal rotation.
Pectineus (Adductors) - accelerates hip adduction, flexion, and internal rotation.
Semimembranosus (Medial Hamstrings) - accelerates knee flexion, hip extension, and tibial internal rotation.
Semitendinosus (Medial Hamstrings) - accelerates knee flexion, hip extension, and tibial internal rotation.
