Anterior View

Knees Move Inward

    Overactive
  • Adductor Longus - accelerates hip adduction, flexion, and internal rotation.
  • Adductor Longus
  • Adductor Magnus, Anterior Fibers - accelerates hip adduction, flexion, and internal rotation.
  • Adductor Magnus, Anterior Fibers
  • Adductor Brevis - accelerates hip adduction, flexion, and internal rotation.
  • Adductor Brevis
  • Gracilis - accelerates hip adduction, flexion, and internal rotation; assists in tibial internal rotation.
  • Gracilis
  • Pectineus - accelerates hip adduction, flexion, and internal rotation.
  • Pectineus
  • Tensor Fascia Latae - accelerates hip flexion, abduction, and internal rotation.
  • Tensor Fascia Latae
  • Biceps Femoris-Short Head - accelerates knee flexion and tibial external rotation.
  • Biceps Femoris-Short Head
  • Lateral Gastrocnemius - accelerates plantar flexion and externally rotates tibia.
  • Gastrocnemius
  • Vastus Lateralis - accelerates knee extension.
  • Vastus Lateralis
    Underactive
  • Gluteus Medius, Posterior Fibers - accelerates hip abduction and external rotation.
  • Gluteus Medius, Posterior Fibers
  • Gluteus Maximus - accelerates hip extension and external rotation.
  • Gluteus Maximus
  • Semimembranosus - accelerates knee flexion, hip extension, and tibial internal rotation.
  • Semimembranosus
  • Semitendinosus - accelerates knee flexion, hip extension, and tibial internal rotation.
  • Semitendinosus
  • Medial Gastrocnemius - accelerates plantar flexion and internally rotates tibia.
  • Gastrocnemius
  • Vastus Medialis - accelerates knee extension.
  • Vastus Medialis

Hip Hikes

    Overactive
  • Quadratus Lumborum - spinal lateral flexion.
  • Quadratus Lumborum
    Underactive
  • Gluteus Medius, Anterior Fibers - accelerates hip abduction and internal rotation.
  • Gluteus Medius, Anterior Fibers
  • Gluteus Medius, Posterior Fibers - accelerates hip abduction and external rotation.
  • Gluteus Medius, Posterior Fibers

Hip Drops

    Overactive
  • Quadratus Lumborum - spinal lateral flexion.
  • Quadratus Lumborum
    Underactive
  • Gluteus Medius, Anterior Fibers - accelerates hip abduction and internal rotation.
  • Gluteus Medius, Anterior Fibers
  • Gluteus Medius, Posterior Fibers - accelerates hip abduction and external rotation.
  • Gluteus Medius, Posterior Fibers

Inward Trunk Rotation

    Overactive
  • Internal Oblique - spinal flexion (bilateral), lateral flexion, and ipsilateral rotation.
  • Internal Oblique
  • External Oblique - spinal flexion, lateral flexion, and contralateral rotation.
  • External Oblique
    Underactive
  • Gluteus Medius, Anterior Fibers - accelerates hip abduction and internal rotation.
  • Gluteus Medius, Anterior Fibers
  • Gluteus Medius, Posterior Fibers - accelerates hip abduction and external rotation.
  • Gluteus Medius, Posterior Fibers
  • Transverse Abdominis (Instrinsic Core Stabilizer) - increases intra-abdominal pressure. Supports the abdominal viscera.
  • Transverse Abdominis
  • Multifidus (Instrinsic Core Stabilizer) - spinal extension and contralateral rotation.
  • Multifidus
  • Internal Oblique (Instrinsic Core Stabilizer) - spinal flexion (bilateral), lateral flexion, and ipsilateral rotation.
  • Internal Oblique
  • Transversospinalis: Thoracis Division (Instrinsic Core Stabilizer) - produces spinal extension and lateral flexion; extension and contralateral rotation of the head.
  • Transversospinalis Thoracis
  • Diaphragm (Instrinsic Core Stabilizer) - pulls the central tendon inferiorly, increasing the volume in the thoracic cavity.
  • Diaphragm

Outward Trunk Rotation

    Overactive
  • Internal Oblique - spinal flexion (bilateral), lateral flexion, and ipsilateral rotation.
  • Internal Oblique
  • External Oblique - spinal flexion, lateral flexion, and contralateral rotation.
  • External Oblique
  • Piriformis - accelerates hip external rotation, abduction, and extension.
  • Piriformis
    Underactive
  • Gluteus Medius, Anterior Fibers - accelerates hip abduction and internal rotation.
  • Gluteus Medius, Anterior Fibers
  • Gluteus Medius, Posterior Fibers - accelerates hip abduction and external rotation.
  • Gluteus Medius, Posterior Fibers
  • Transverse Abdominis (Instrinsic Core Stabilizer) - increases intra-abdominal pressure. Supports the abdominal viscera.
  • Transverse Abdominis
  • Multifidus (Instrinsic Core Stabilizer) - spinal extension and contralateral rotation.
  • Multifidus
  • Internal Oblique (Instrinsic Core Stabilizer) - spinal flexion (bilateral), lateral flexion, and ipsilateral rotation.
  • Internal Oblique
  • Transversospinalis: Thoracis Division (Instrinsic Core Stabilizer) - produces spinal extension and lateral flexion; extension and contralateral rotation of the head.
  • Transversospinalis Thoracis
  • Diaphragm (Instrinsic Core Stabilizer) - pulls the central tendon inferiorly, increasing the volume in the thoracic cavity.
  • Diaphragm