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What 3 (4) bones make up the pelvis girdle?
- sacrum
- coccyx
- 2 hip bones (ilium, ischium, pubis)
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What is another name for hip bone?
os coxae
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What is the superior portion of the hip bone?
ilium
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What are the landmarks of the ilium?
- iliac crest
- ant. sup. iliac spine (ASIS)
- ant. inf. iliac spine (AIIS)
- post. sup. iliac spine (PSIS)
- post. inf. iliac spine (PIIS)
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What is the posterior inferior portion of the hip bone?
ischium
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What are the landmarks of the ischium?
- body
- ramus
- ischial tuberosity
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What is in the middle of the hip bone?
pubis
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What are the landmarks of the pubis?
- body
- superior ramus
- inferior ramus
- symphysis pubis
- pubic tubercle
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What 3 landmarks are made up of combinations of the 3 hip bones?
- acetabulum
- obturator foraman
- greater sciatic notch
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What is the divot hole where the femur goes into?
acetabulum
ischium, pubis
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What is the true hole that nerves and blood vessels run through?
obturator foraman
bodies of rami of pubis, ischium
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What is below the PIIS for attachment of the sciatic nerve and piriformis muscle?
greater sciatic notch
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What is the lumbosacral angle?
sacrum meets with L5 and is tilted
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The pelvis consists of what 3 joints?
- lumbosacral jt
- sacrococcygeal jt
- sacroiliac jt
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What pelvic jt. is separated by an intervertebral disc at L5 and S1?
lumbosacral jt.
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What pelvic jt. has some minimal mvmt and is located where the coccyx meets the sacrum?
sacrococcygeal jt.
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What joint is where the ilium and sacrum meet, is a nonaxial synovial jt., designed for stability, and transmits weight from upper body through vertebral column to the hip bones?
sacroiliac jt.
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What ligament is broad, flat and covers the ant. surface of the sacrum?
sacroiliac jt
holda the ant portion of the jt together
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Where is the sacrospinous ligament located, and what does it help to create?
post. lower lat. sacrum and coccyz to the spine of the ischium
helps create a foramen out of the greater sciatic notch for the sciatic nerve to go through
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What happens when the ASIS moves ant. to the pubic sympysis?
ant. pelvic tilt..lordosis
lumbar hyperextension and hip flexion
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What happpens when the ASIS moves posterior to the pubic symphysis?
post. pelvic tilt..kyphosis
lumbar hip flexion and hip extention
abdominals contract
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What is sacral flexion?
nutation
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What is sacral extension?
counternutation
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