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The Pelvic Girdle. Pelvic Girdle. Pelvis transmits weight of torso to legs Innominate “bone with no name” Also called the os coxae Firmly attached to axial skeleton at sacroiliac joint (to the sacrum) and to each other at pubic symphysis Anchors muscles for abdomen

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pelvic girdle
Pelvic Girdle
  • Pelvis transmits weight of torso to legs
  • Innominate “bone with no name”
    • Alsocalled theoscoxae
  • Firmly attached to axial skeleton at sacroiliac joint (to the sacrum) and to each other at pubic symphysis
  • Anchors muscles for abdomen
  • Most reliable area for age and sex estimations from adults
ossification of innominate
Ossification of Innominate
  • Each oscoxa is made up of 3 bones that meet at the acetabulum
    • Articular socket for femur – lateral
      • Where the 3 join is called the triradial strip (cartilage)
        • forms “Y-shape”
      • Within the socket is the lunate surface – where the femoral head actually articulates
the 3 parts of the innominate
The 3 Parts of the Innominate
  • Ilium – superior – thin blade like upper portion
  • Ischium – inferior– blunt portion (what you sit on)
  • Pubis – ventral/anterior –where both sides meet in midline
  • Ischium and pubis join to enclose heart shaped opening called obturator foramen, which is closed with a membrane in life
innominate
Innominate
  • Ilium
  • Ischium
  • Pubis
  • Anterior superior iliac spine
  • Anterior inferior iliac spine
innominate1
Innominate
  • Acetabulum
  • Iliac crest
  • Iliopubic ramus
  • Ischiopubic ramus
  • Pubic tubercle
innominate2
Innominate
  • Pubic symphysis
  • Obturator foramen
  • Posterior superior iliac spine
  • Posterior inferior iliac spine
  • Auricular surface
  • Preauricular surface
  • Greater sciatic notch
  • Ischialspine
  • Lesser sciatic notch
innominate3
Innominate
  • Iliac fossa
pubic symphysis
Pubic Symphysis
  • Irregular articular surface covered with hyaline cartilage and joined to opposing symphysis by fibro-cartilage
  • Ventral surface (external)
  • Dorsal surface
    • parturition pits
the femur1
The Femur

Proximal End (anterior)

  • Head
  • Neck
  • Intertrochanteric line
the femur2
The Femur

Proximal end (posterior)

  • Greater trochanter
  • Lesser trochanter
  • Intertrochanteric crest
  • Nutrient foramen
  • Linea aspera
the femur3
The Femur

Proximal end (medial)

  • Fovea capitis
  • Trochanteric fossa
the femur4
The Femur

Distal end (posterior)

  • Popliteal surface
the femur5
The Femur

Distal end (medial)

Distal end (lateral)

Lateral epicondyle

Popliteal groove

  • Medial epicondyle
the femur6
The Femur

Distal end (inferior)

  • Patellar groove (surface)
  • Lateral condyle
  • Medial condyle
  • Intercondylar fossa
ossification of femur
Ossification of Femur
  • 1 primary center
  • 4 secondary centers
    • Fuse during late teens to early 20s
the patella1
The Patella
  • Apex
  • Medial articular facet
  • Lateral articular facet
tibia
Tibia

Proximal (anterior)

  • Tibial tuberosity
  • Anterior crest
tibia1
Tibia

Proximal (posterior)

  • Tibial plateau
  • Popliteal (Soleal) line
  • Nutrient foramen
tibia2
Tibia

Proximal (superior)

  • Medial condyle
  • Lateral condyle
  • Intercondylar eminence
tibia3
Tibia

Lateral view

  • Interosseous crest
  • Fibular notch
tibia4
Tibia

Distal end (anterior)

Distal end (posterior)

Malleolar groove

Distal end (inferior)

  • Medial malleolus
  • Talar facet
fibula
Fibula

anterior

  • Head
  • Styloid process
  • Interosseous crest
  • Lateral malleolus
fibula1
Fibula

posterior

  • Fibular groove
fibula2
Fibula

medial

  • Nutrient foramen
  • Malleolar fossa
ossification of tibia fibula
Ossification of Tibia & Fibula
  • 1 primary center
  • 2 secondary centers
    • Fuse during late teens to early 20s
talocrural joint
Talocrural joint
  • Formed at articulation of tibia/fibula and talus (of the foot)
slide32

Radius

Ulna

Femur

Tibia

Fibula

Humerus

Lateral

Medial