Hip FA

Where is a common area of pain referral from the hip

knee

what type of joint is the hip

ball and socket

how many degrees of freedom are there in the hip

3

flex/ext

ab/adduction

ir/er

what does the head of femur articulate with

acetabulum

how many trabecular patterns are there in the hip

3

what does the arcuate bundle do

resist bending or shear of the head and neck of femur

what does the trochanteric bundle do

resist tensile forces from muscles acting on the great trochanter

what does the vertical bundle do

resist compression through head of femur

when people have pain at the hip, what do they usually do with their hands

they make a "c" and cup the sides of the hips to show where referred pain is going

when the knee is flexed, what is the ROM of hip flexion

120 degrees

when the legs are abducted 30-40 degrees, what is the ROM of hip flexion

150 degrees

when the knee is extended, what is the ROM of hip extension

20 degrees

when the hip is abducted, what is the ROM

45 degrees

when the hip is adducted, what is the ROM

30 degrees

when the hip is externally rotated, what is the ROM

45 degrees

when the hip is internally rotated, what is the ROM

30 degrees

when assessing ROM, what are some things to consider

pelvic tilt

kyphosis

lordosis

size of pt

when you are walking up the stairs, how much flexion is your hip in

40-67 degrees

when you are walking down the stairs, how much flexion is your hip in

36 degrees

when tying ones shoe and your legs are crossed, what is the ROM for flexion and external rotation

110 degrees flexion

33 degrees ER

what is the position of reference

line connecting the two ASISs is perpendicular to a line from the ASIS to the patella and parallel to the frontal plane

what is the resting/open packed position for hips

30 hip flexion

30 hip abduction

20 hip ER

what is the close packed position for the hips

full extension

internal rotation

abduction

what is the capsular pattern for the hip

internal rotation

flexion

abduction

slight loss of extension

true or false: the angle of inclination is typically bigger in men

true

what is the normal angle of inclination

125 degrees

what is coxa valga

angle of inclination greater than 150 degrees

what is coxa vara

angle of inclination less than 120 degrees

what influences the collum angle

ROM

speed of motion

strength of bony structure

shearing forces on the femoral head and neck

what is the angle of torsion

angle between the axis of the femoral condyles and the axis of the head/neck of the femur in the transverse plane

how does the acetabulum face

lateral

anterior

inferior

how does the femoral head face

medial

anterior

superior

what is anteversion

angle of torsion is greater than 15 degrees

lacks ER

toe-in gait

what is retroversion

angle of torsion is less than 8 degrees

lacks IR

toe-out gait

what is the labrum composed of

type I collagen, little cartilage

true or false: the labrum creates a negative intra articular pressure

true

what are some functions of the labrum

lubricates and cushions joint

improves load distribution

true or false: there is about 25 mm of articular cartilage which is attached to the neck of the femur

false; about 9 mm

true or false: the hip has the most cartilage than any joint in the body

true

what part of the femur is not covered by cartilage

the fovea

what is another name for the illiofemoral ligament

Y ligament

what is the job of the Y ligament

to check IR and extension; movements in the sagittal plane

what is the job of the pubofemoral ligament

checks abduction and IR; movements in the frontal plane

in the hip, what ligament is posterior

ishiofemoral ligament

what is the job of the ishiofemoral ligament

checks extension and IR

where does the ligament teres attach to

acetabular notch and fovea

ligamentum teres is taut in what movement

adduction of the hip

what ligament provides vascular supply to the head of the femur

ligamentum teres

what ligament helps the obturator artery to pass through

transverse ligament

what does the zona obicularis resist

hip distraction

how is the zona obicularis formed by

the circular fibers of the hip capsule

what 3 muscles make up the pes anserine

semitendenosis

gracilis

sartorius

what is trendelenberg sign

indicates weakness of gluteus medius

causes opposite side to drop

common before hip replacements

what is a common injury in long distance rummers, downhill skiers, jumping sports, etc. due to repetitive stress from friction of the ITB as it slides over the femoral condyle

iliotibial band friction syndrome

what are the major synergistic muscles of hip flexion

psoas major

iliacus

TFL

sartorius

rectus femoris

gluteus medius

gluteus minimus

what are the major synergistic muscles of hip extension

gluteus maximus

biceps femoris

semitendinosus

semimembranosus

when extended, do the hamstrings assist

true

what is a synergistic muscle for abduction

gluteus max/med/min

what is a synergistic muscle for adduction

adductor magnus/longus/brevis

what is piriformis syndrome

entrapment of the sciatic n. by the ms. as it passes through the sciatic notch

what is piriformis syndrome caused by

overuse

trauma

females