kinesiology exam 3

-hip

what type of joint is pubic symphyses

amphiarthosis

what type of joint is sacroiliac in children

diarthrotic

what type of joint is sacroiliac in adults

modified amphiarthrotic

sacrum

• load bearing

• dorsal is convex

• facets are concave and articulate with facets of 5th lumbar

sacrum ligament support

• anterior sacroiliac ligament

• interosseous sacroiliac ligament

• posterior sarcoiliac ligament

• sacrotuberous

• sacrospinous

sacrum rom

• nutation

• counternutation

• torsion

nutation

anterior tilt

counternutation

posterior tilt

sacral movement

:)

sitting

slight counternutation (posterior tilt)

standing

• slight nutation (anterior tilt)

• stability (close-packed)

walking

• right hip flexion=right on right movement (green axis)

• help hip flexion=left on left movement (red axis)

what is the key landmark for motion analysis for hip flexion

greater trochanter

femoral inclination angle

frontal plane angle between femoral neck and medial side of the shaft

angle at birth

140-150°

angle in adults

125°

coxa vara

< 125°

coxa valga

> 125°

anteversion

inward rotation

normal anteversion

10-15°

excessive anteversion

> 15°

retroversion

< 10°

femoroacetabular ligament support

• iliofemoral

• ligamentum teres (obturator artery)

osteokinematic ROM active

:)

flexion

120°

extension

20°

abduction

40°

adduction

25°

internal rotation

35°

external rotation

45°

six degrees of freedom

f/e

abd/add

ir/er

compression/distraction

ant/post glide

med/lat glide

hip flexion primary muscle movers

• iliopsoas

• psoas major

• rectus femoris

iliopsoas o/i

o: iliac fossa (inner surface of pelvis)

i: lesser trochanter of femur

psoas major

o: transverse processes and vertebral bodies of lumber vertebrae (L1-L2)

i: lesser trochanter of femur

rectus femoris

o: AIIS

i: tibial tuberosity

hip extension primary muscle movers

• gluteus maximus

• hamstrings

glute max o/i

o:

• posterior surface of the ilium

• sacrum

• coccyx

• sacrotuberous ligament

i:

• gluteal tuberosity

• iliotibial tract

biceps femoris

o:

• ischial tuberosity (long head)

• lateral lip of the linea aspera

  i:

• both heads

semitendinosus

o: inferior aspect of the posterior portion of ischial tuberosity

i: upper medial tibia

semimebranosus

o: lateral ischial tuberosity

i: posterior surface of the medial tibial condyle

abduction PMM

• gluteus medius

• gluteus minimus

glute med o/i

o: gluteal surface of ilium (in between anterior/posterior gluteal line)

i: lateral greater trochanter

glute mini o/i

o: ilium (between ant/inf gluteal lines)

adduction PMM

• adductor magnus

• adductor brevis

adductor magus o/i

o:

• pubic/ischial ramus (adductor)

• ischial tuberosity (hamstring)

i:

• linea aspera

• gluteal tuberosity

• adductor tubercle

adductor brevis o/i

o:

• anterior surface of the body of pubis

• inferior pubic ramus

i:

• linea aspera

• pectineal line

ir PMM

• gluteus medius

• gluteus minimus

ER PMM

• piriformis

• quadratus femoris

piriformis o/i

o:

• anterior surface of the sacrum

• sacrotuberous lig.

• gluteal surface of the ilium

i:

• greater trochanter (superior)

• lateral aspect of hip joint capsule

quadratus femorus o/i

o: lateral ischial tuberosity

i: intertrochantic crest of the femur