Must Memorize Muscles

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Must Memorize Muscles
2011-12-11 13:30:35
Muscles Origins Insertions Actions how Palpate

Must Memorize for Final
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  1. Gluteus Maximus
    • O: Ilium-posterior sacrum, (superior gluteal line of ilium)
    • I: Gluteal Tuberosity of Femur & Iliotibeal Tract-->lateral epicondyle of tibial condyle
    • A: Hip Extension, Lateral Rotation of hip in end range (>neutral) extension
    • Palpation: Buttock (middle/posterior)
  2. Gluteus Medius
    • O: Iliac Crest (b/t super and middle gluteal lines)
    • I: Lateral Aspect of the Greater Trochanter
    • A: Abduction of the hip
    • Palpation: b/t the ASIS and PSIS during active hip abduction
  3. Gluteus Minimus
    • O: Posterior Ilium
    • I: Anterior surface of the Greater Trochanter
    • A: Abduction/Medial Rotation of the hip
    • Palpation: difficult to identify, under the gluteus medius, but slightly POSTERIOR
  4. Tensor Fasciae latae
    • O: Iliac Crest posterior to the ASIS
    • I: Iliotibial Tract-->lateral epicondyle of the tibial condyle
    • A: Abduction, Flexion, Medial Rotation of the hip & Knee Extension
    • Palpation: slightly anterior to the gluteus medius, lateral to the ASIS
  5. Piriformis
    • O: Ischium (anterior aspect of the sacrum)
    • I: Superior aspect of the Greater Trochanter
    • A: Lateral Rotation
    • Palpation: b/t the greater trochanter and the PSIS (deep muscle)
  6. Iliopsoas (Iliacus & Psoas Major)
    • O: Psoas-T12-L5, Iliacus-Inner surface of the ilium Iliac Fossa)
    • I: Lesser Trochanter of the Femur
    • A: Hip Flexion
    • Palpation: find ASIS, then inch inferior & inch medial, press in (deep muscle), felt w/ witting hip flexion
  7. Quadriceps Femoris Muscle Group (Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius)
    • O: Rectus Femoris (long head)-AIIS, Medialis/Lateralis- Linea Aspera of Posterior Femur, Intermedius- Anterior & Lateral Shaft of the Femur
    • I: Common Patellar Ligament via the Patella
    • A: Knee Extension (Rectus Femoris also Flexes the Hip)
    • Palpation: on the dorsum of the Femur into knee extension
  8. Sartorius (longest muscle in the body)
    • O: ASIS
    • I: Pes Anserinus Tendon --> upper medial shaft of the tibia
    • A: Hip Abduction, Flexion, & Lateral Rotation, also Knee medial rotation
    • Palpation: slightly below the ASIS as you go into tailor sitting
  9. Hamstrings (Biceps Femoris, Semitendinosus, Semimembranosus)--3 Tendons
    • O: Biceps Femoris (long head)- Ischial Tuberosity (short head)-linea aspera of the femur, Semitendinosus- Ischial Tuberosity, Semimembranosus- Ischial Tuberosity
    • I: Biceps Femoris- Head of the Fibula, Semitendinosus-anterior proximal tibial shaft, Semimembranosus-posterior tibial condyle
    • Palpation: Tendons in the popliteal fossa, lateral to medial BTM--Biceps Femoris, Semitendinosus, Semimembranosus
  10. Gastrocnemius
    • O: (Medial Head)- Medial Epicondyle of the Femur, (Lateral Head)- Lateral Epicondyle of the Femur
    • I: Calcaneous via the Achilles Tendon
    • A: Plantar Flexion
    • Palpation: Upper part of the Calf during active Plantar Flexion
  11. Soleus
    • O: Soleal Line of the Tibia and posterior head and upper shaft of the Fibula
    • I: Calcaneous via the Achiles Tendon
    • A: Plantar Flexon assist
    • Palpation: Lateral side of the Tibia below the belly of the Gastrocnemius. Together (2 heads of the gastrocnemius & the soleus) are the TRICEPS SURAE
  12. Tibialis Posterior
    • O: Posterior Tibia, Fibula & Interosseous Membrane b/t the Tibia & Fibula
    • I: Navicular & adjacent Tarsals/Metatarsals of the foot
    • A: Inversion of the foot at the Subtalar Joint
    • P: Tendon is the most anterior tendon and is palpated around the medial malleolus
  13. Flexor Digitorum Longus
    • O: Posterior Tibia
    • I: Distal Phalanges of the 4 lateral toes-plantar surface
    • A: Flexion of the DIP Joints of 2-4 Phalanges
    • P: around the Medial Malleolus just posterior to the Tibialis Posterior
  14. Flexor Hallucis Longus
    • O: Posterior Fibula
    • I: Distal Phalange of the great toe-plantar surface
    • A: Flexion of the toe at IP Joint
    • P: Tendon is medial and deep to the Achilles Tendon-plantar surface
  15. Tibialis Anterior
    • O: Lateral Condyle/Lateral Shaft of the Tibia
    • I: Base of the 1st metatarsal/1st Cuniform Bone
    • A: Paralysis of the muscle will cause a foot drop in gait
    • P: Largest tendon on the anterior surface (dorsal surface), medial side
  16. Extensor Hallucis Longus
    • O: Anterior shaft of the Fibula
    • I: Base of the phalanx of the great toe
    • A: (prime movement) extension of the great toe, (accessory) dorsiflexion
    • P: Lateral to tibialis anterior tendon on the dorsal surface of the foot
  17. Extensor Digitorum Brevis
    • O: Anterior Calcaneous
    • I: Extensor expansion of the phalanges 2-4
    • A: Assist in extension of the phalanges of 2-4 on the dorsum of the foot
    • P: Anterior/slightly lower to the Lateral Malleolus
  18. Extensor Digitorum Longus
    • O: Lateral Condyle of the Tibia
    • I: Middle and distal Phalanges of 2-4 toes
    • A: Extension of phlanges 2-4 on the dorsum of the foot
    • P: Common tendon palapated on anterior surface, lateral to Extensor Hallucis Longus Tendon
  19. Peroneus Longus
    • O: Head and Lateral shaft of the Fibula
    • I: Base of 1st Metacarpal and 1st Cuneiform bone-plantar surface
    • A: Eversion of the foot, assist in Plantar Flexion
    • P: Above and slightly behind the Lateral Malleolus posterior to Peroneus Brevis
  20. Peroneus Brevis
    • O: Lateral Shaft of the Fibula
    • I: Base of the 5th Metatarsal
    • A: Eversion of the Foot
    • P: Lateral Dorsum of the foot-closest to the Lateral Malleolus- The tendon is more visible than the Peroneus Longus Tendon
  21. Quadratus Lumborum
    • O: Posterior Illiac Crest
    • I: Transverse Processes of L1-4
    • A: Lateral Flexion of the trunk/hip elevation
  22. Scalenes
    • O: Anterior- Transverse Processes of C3-6, Medius- Transverse Processes of C2-7, Posterior-Transverse Processes of C4-6
    • I: First 2 Ribs (anterior/medius for the first rib) and posterior Scalene to the 2nd rib
    • A: Bilaterally: Forced Expiration, Unilaterally: Assist in lateral Flexion to the same side
  23. Sternocleidomastoid (SCM)
    • O: Manubrium of the Sternum/medial Clavicle
    • I: Mastoid Process of Temporal Bone
    • A: Cervical rotation (opposite side), Bilateral Flexion, Unilateral Lateral Flexion (same side)
  24. Erector Spinae (what are the 3 parts?)
    -Action as a whole
    • Iliocostalis
    • Longissimus
    • Spinalis
    • ACTION: Unilaterally Lateral Flexion, Bilaterally Extension of the spine