Exam 3 Material Flashcards
Functions of lower extremity
- Support body weight
- Province stable foundation while standing
- Allow locomotion
Bones are ___ and ___ with well marked areas for muscular and ligamentous attachment
Heavier
Stronger
Joints are __ and ___ with good bony configurations
Stronger
More stable
Muscles are ____ and less capable of ______
More powerful
Delicate movement
Fewer ____ nerve fibers
Sensory
Blood vessels are ___
Larger
Single bone of pelvis
Innominate bone
Innominate bone articulates with
Sacrum
Femur
Other innominate bone
Each innominate bone consists of
Ilium
Ischium
Pubis
Large depression on lateral aspect of each innominate
Acetabulum
Head of femur and ___ form hip joint
Acetabulum
Lunar surface
Horseshoe shaped articular surface of acetabulum
Transverse acetabular ligament
Spans acetabular notch
Largest and uppermost portion of bone of pelvis
Ilium
3 oblique gluteal lines on ilium
Anterior
Posterior
Inferior
Iliac fossa
Internal surface of ilium
Iliac tuberosity
Area where ligaments attach
Auricular suface
Where each innominate articulates with sacrum
Arcuate line
Marks boundary between major or false pelvis from minor or true pelvis
Ischial tuberosity
Hamstring muscles originate
Bears weight of body when sitting
Pubis symphysis
Articulates with pubis from opposite innominate
Obturator foramen
Opening found at inferior aspect of each innominate
Obturator membrane
CT that closes obturator foramen
False/major pelvis
Helps support and protect abdominal viscera
Boundaries: lumbar vertebrae, ilium, abdominal wall
True/minor pelvis
Surrounds birth canal in females
Boundaries: sacrum, coccyx, ilium, ischium, pubis
Functions of pelvic bone
Protects pelvis viscera Transmits body weight Absorbs stress Allows locomotion Bony support for birth canal
Android pelvis
Typical male pelvis
Gynecoid pelvis
Typical female pelvis
Anthropoid pelvis
Exaggerated male pelvis
Platypelloid pelvis
Exaggerated female pelvis
Fractures of pelvis common at
Pubic rami
Acetabulum
Sacroiliac joint
Lateral aspect of ilium
Pelvis suffers fractures in two places
- Where force directly applied
2. 180 degrees opposite from initial fracture
High ___ and ___ rate associated with pelvis fractures due to hemorrhagic shock and pelvic organ damage
Morbidity
Mortality
Hip pointers
Common painful contusion injury of soft tissue associated with iliac crest
___ primary ossification centers in pelvis
3 (one for ilium, ischium, pubis)
__ secondary centers of ossification in pelvis
5
Iliac crest, AIIS, ischial tuberosity, pubis symphysis, center of acetabulum
Pelvic bone completes ossification between
20 and 22 years