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16 Cards in this Set
- Front
- Back
Which is a "slightly movable" joint in the pelvis?
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sacroilliac joint
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Which are "highly movable" joints in the pelvis? What are their possible actions?
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sacrolumbar- (hinge) flexion, extension, hyperextension
illiofemoral- ("hip joints") flexion, extension, A44, A24, inward/outard rotation |
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What are the limitations of movement of the sacroilliac and sacrolumbar joints?
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sacroilliac- ligamentous
sacrolumbar- ligamentous and bony (some bony process come in contact) |
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What are the limitations of movement in the illiofemoral (hip) joints?
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Y ligaments- limit outward rotation when hip is extended, become lax when hip is flexed
bony- joint mechanics, alignment, orientation of femoral nkec, head, acetablum |
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What is the assessment of correct peliv alignment?
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anterior- ASIS level with each other, form triangle with pubis symphisis
lateral- ASIS and PSIS horzantal, symphisis pubis on same vertical |
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What is Anterior Pelvic Tilt?
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-AsIS lower than PSIS, increase curve in spine
-most common misalignment |
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What is Posteror Pelvic Tilt?
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PSIS lower than ASIS, decrease curve of spine
-"professor stance" |
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What is Pelvic Torsion?
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asymmetrical alignment of right and left halves
-ASIS lower on one side than the other, PSIS opposite |
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What are the implications of differences in the width of the pelvis?
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wider- less effecient locomotion, flatter posterior mass
narrower- more effecient locomotion, greater posterior mass assess: look at distance between PSIS (width of sacrum) |
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What is coxa vara and varus?
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angle of femoral neck, relative to shaft (look at picture in notes)
vara- reduced A24, outward rotation varus- increased A24, outward rotation if you have wide pelvis, you probably have coxa vara |
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What is femoral anteversion and retroversion?
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almost like a torsion in the neck of the femur, angle that femur enters acetablum
anteversion- outward rotation retroversion-inward rotation |
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What is the most important factor in determining degree of possible turnout? What are they?
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bony structures:
angle of femoral neck, angle that femur enters acetablum, relative concavity and length of neck of femur, facing of acetablum, depth of acetablum |
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What are the effects of the depth of acetablum?
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shallow- great range of motion
deep- greater restriction of motion |
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Combine:
narrow pelvis, deep and/or forward facing acetablum, vertically descending ischium |
advantages:
greater locomotion, higher jumps, more balance, narrow hips disadvantages; less ROM in hips, less turnout, larger posterior mass, reduced stability |
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combine:
wide pelvis, shallow and/or lateral facing acetablum, flaring ischium |
advantages:
greater ROM in hips, better turnout, less posterior mass, lower COG/grounded disadvantages: less effecient locomotion, less effecient jumps, reduced vertical balance, wide hips |
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What is your turnout at birth?What happens as you grow old? What can you do to increase your turnout?
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-at birth large natural turnout
-adulthood, natrural turnout decreases dramatically -cannot increase turnout, but can maintain what you already have |