Lower limb & Trunk Muscle Actions Flashcards
What are the actions of Rectus Femoris in both OKC and CKC?
OKC - Hip Flexion & Knee Extension
CKC - Anterior Pelvic Tilt
What are the actions of Sartorius?
Think - Long Strappy muscle that spans from outside hip to medial knee
- Thigh Abduction & External Rotation
- Knee Flexion & Tibial Internal Rotation
What is the action of the Vastii in OKC and CKC?
OKC - Knee Extension
CKC - No CKC Action as this muscle group doesnt attach to the pelvis –> HAAA HAAA TRICKED YOU
What makes up the iliopsoas?
What is its action?
Psoas Major & Iliacus
These muscles are the main HIP FLEXORS
Also produce Thigh External Rotation
What muscles make up the hamstrings?
What are their actions?
Biceps Femoris - Hip Ext & ER, Knee Flexion & ER
Semitendinous - Hip Ext & IR, Knee Flexion & IR
Semimembranosus - Hip Ext & IR, Knee Flexion & IR
What muscles flex the trunk (bilaterally)
- rectus abdominis
- external obliques
- internal obliques
- psoas major
- psoas minor
What muscles laterally flex the trunk (unilaterally)
- quadratus lumborum
- intertransversarii
- external obliques
- internal obliques
- rectus abdominis
- multifidis
What Muscles ACTION is Contralateral Trunk Rotation?
External Oblique
What Muscles ACTION is Ipsilateral Trunk Rotation?
Internal Oblique
What muscles produce External Rotation of the hip?
Hint There is lots of muscles
All deep Gluteal Muscles (Piriformis, Quadratus femoris, Superior and inferior Gemellus, Obturator Internus, Obturator Externus)
- Sartorius
- Iliopsoas
- Biceps Femoris
- All 3 adductors (Magnus, Longus and Brevis)
- Glute Max
What muscles produce Internal Rotation of the Hip?
- Semimembranosis and Semitendinosis
- Glute medius and minimus
What muscles produce lumbar extension?
Erector spinae & Multifidus
What muscles perform Hip Abduction?
- Glute Max
- Glute Medius
- Piriformis
- Sartious
What are the biarticular muscles of the lower limb?
- Hamstrings
- Recurs femoris
- Gastrocnemius
