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The Pelvis (Muscles (Adductor Group (Pectineus (action (hip adduction,…

- - - - Origin
        
        Posterior Gluteal Line
        
        Sacrotuberous Ligament
      - Insertion
        
        ITT
        
        Gluteal Tuberosity
      - Nerve Supply
        
        Gluteal Nerves
      - Acting from distal attachment, prevents forward movement of trunk from producing flexion at supporting hip during walking.
      - Action
        
        Used fir climbing stairs and standing
        
        Bring limb back into line with trunk
        
        Extension of flexed hip
        
        When sitting Gluteus Maximus Extends
    - - Origin
        
        Between Posterior and Anterior Gluteal Line
      - Insertion
        
        Greater trochanter
      - Action
        
        Abduction
        
        Medial Rotation of Hip
    - - Origin
        
        Between anterior and inferior gluteal lines
      - Insertion
        
        Greater Trochanter
      - Action
        
        Abduction
        
        Medial Rotation of Hip
    - - origin
        
        (anterior) outer lip of crest of ilium
      - insertion
        
        fascia lata (ITT)
      - action
        
        extends & stabilizes knee
        
        By pulling fascia lata tighter which steadies pelvis on femur
        
        maintains posture in standing
  - - - origin
        
        pectineal line of pubis
      - insertion
        
        pectineal line of femur
      - action
        
        hip adduction
        
        flexion
  - - - origin
        
        lesser trochanter (with psoas major)
      - insertion
        
        iliac fossa
      - action
        
        hip flexion
    - - origin
        
        bodies
        
        transverse processes
        
        discs of T12
        
        lumbar vertebrae [T12, L1]
      - insertion
        
        lesser trochanter of femur
      - action
        
        hip flexion
  - - - Gemellus
        
        Superior
        
        Origin
        
        Ischial Spine
        
        Inferior
        
        Origin
        
        Ischial Tuberosity
      - Quadratus Femoris
        
        Origin
      - Piriformis
        
        Origin
        
        Ventral Sacrum
      - Obturators
        
        Externus
        
        Outer surface of obturator foramen
        
        Internus
        
        Inner Surface obturator membrane/foramen
  - - - upper end of thigh
        
        boundary between thigh & abdomen
    - - sartorius muscle laterally
      - adductor longus medially
      - inguinal ligament forming base superiorly
      - roof
        
        fascia
      - floor
        
        iliopsoas
        
        pectineus
    - - Femoral nerve
      - Femoral vein
      - Femoral artery
- - - - Comprised of
        
        Body
        
        Superior and Inferior Rami
        
        Pectineal Line
        
        Function
        
        Forms part of the pelvic brim
        
        Acts as origin for Pectineus Muscles
        
        Location
        
        Superior Rami
        
        Pubic Crest
        
        Location
        
        Medial to Pubic Tuberocity
        
        Extends to medial end of Pubic Bone
      - Articulates with Ilium at iliopubic Eminence
      - Left and Right side Meet at Pubic Symphysis
      - Part of Boundary of Obturator Foramen
        
        space closed by collagenous fibers
        
        Function
        
        inner and outer layers provide firm base for attachment of muscles to hip
    - - Comprised of
        
        Body
        
        Contributes to acetabulum
        
        Internal surface part of wall of lesser pelvis
        
        Ischial Spine
        
        Above spine
        
        Greater Sciatic Notch
        
        Converted to foramen by sacrotuberous and safcrospinous ligaments
        
        Below Spine
        
        Lesser Sciatic Notch
        
        Converted to foramen by sacrotuberous and sacrospinous ligaments
        
        Ischial Tuberosity
        
        Function
        
        Acts as site for muscle attachment
        
        Contributes to boundary of obturator foramen
    - - Comprised of
        
        Ala (Wing)
        
        Broad iliac fossa (greater/ false pelvis)
        
        Inner and outer (gluteal) surfaces
        
        Boarders
        
        Anterior Boarder
        
        Two projections
        
        AIIS
        
        1 more item...
        
        ASIS
        
        1 more item...
        
        Posterior Boarder
        
        Two Projections
        
        PSIS
        
        1 more item...
        
        PIIS
        
        2 more items...
        
        Body
        
        Function
        
        Participates in formation of
        
        acetabulum
        
        lesser pelvis
        
        Auricular Surface
        
        Function
        
        Articulates Posteriorly with Sacrum
      - Gluteal Surface
        
        Posterior
        
        Shortest
        
        Begins at crest
        
        Passes down to upper part of greater sciatic notch
        
        Anterior
        
        Longest
        
        Begins at crest
        
        Ends at upper part of greater sciatic notch
        
        Inferior Gluteal Lines
        
        Least distinct
        
        Ends near middle of greater sciatic notch
  - - - Sacrum
    - - Pubic Symphysis
  - - - Semi-Circular
    - - Bridged by transverse Ligament
    - - Acetabular Labrum
    - - Faces Laterally
      - Inclined Anteriorly and Inferiorly
- - - - L4 and L5
        
        Lumbosacral Trunk
      - L1 - S3
        
        Dorsal and Ventral Divisions
    - - posterior abdominal pelvic wall
  - - - supplies
        
        cremaster muscle
        
        runs on psoas major
        
        skin
    - - supplies
        
        iliacus
        
        pectineus
        
        anterior compartment of thigh
      - descends through psoas major & passes between psoas & iliacus muscles to enter thigh
    - - supplies
        
        pectineus
        
        obturator externus
        
        medial compartment of thigh
      - *emerges medial to psoas major
    - - enters thigh through greater sciatic foramen below piriformis
        
        Branches
        
        tibial (L4,5, S1,2,3) *
        
        Supplies
        
        posterior compartment of thigh & all of leg & foot
        
        common fibular (L4,5, S1,2,3)branches
        
        Supplies
    - - supplies
        
        gluteus medius
        
        gluteus minimus
    - - supplies
        
        gluteus maximus
    - - supplies
        
        perineum