Lecture Quiz 8

Acetabular labrum, ligamentum capitis, iliofemoral, ischiofemoral, pubofemoral

ligaments of the hip joint

Angle of inclination

angle formed between the neck and head of the femur and the diaphysis

125 degrees

average angle of inclination

Greater, less

angle of inclination is ___ in youth and ___ in old age

Increases mobility for walking

functional benefit of the angle of inclination

Coxa vara

angle of inclination <110

Coxa valga

angle of inclination >125

Anterior

diaphysis forms a(n) ___ curve

MR

if a muscle inserts anterior to the femoral end line (vertical hip axis), it will create ___

LR

if a muscle inserts posterior to the femoral end line (vertical hip axis), it will create ___

Lateral, medial

the shaft of the femur is angled; superior region is ___ while the condyles are in a more ___ position

Aligns knees and feet closer to the midline

the medial slant of the femur functions to:

Angle of anteversion

angle difference between line through the back of the femoral condyles and line through the middle of the neck/head of the femur

10-15 degrees

normal angle of anteversion

Excessive anteversion

increase of the angle of anteversion

Retroversion

decrease of the angle of anteversion

Compensation, stability, weight bearing

changes in the angle of anteversion can lead to ___, alterations in ___ and the ___ biomechanics of the hip joint

In-toeing

postural difference caused by excessive anteversion

Out-toeing

postural difference caused by retroversion

Psoas major, iliacus, sartorius, rectus femoris

anterior hip flexors (4)

Gluteus maximus, Gluteus medius, Gluteus minimus, Tensor fascia lata

gluteal and lateral hip muscles (4)

Piriformis, Gemellus superior, Obturator internus, Gemellus inferior, Quadratus femoris, Obturator externus

deep 6 lateral rotators

Gracilis, Pectineus, Adductor brevis, Adductor longus, Adductor magnus

hip adductors (5)

Semitendinosis, Semimembranosus, Biceps femoris

hamstrings (3)

Fixed

femur must be ___ for pelvic movements to occur

Anterior pelvic tilt

movement created when the front of the pelvis drops forward and down

Posterior pelvic tilt

movement created when the back of the pelvis drops back and down

Pelvic elevation

movement when one side of the iliac crest is sitting higher than the other side

Pelvic depression

movement created when one side of the iliac crest is dropped lower than the other side

Pelvic rotation

movement created when the pubic symphysis turns to the right or left

ROF, force couple

all pelvic movements are a result of the hip and trunk muscles acting in ___ and as a ___

Hip flexors and trunk extensors

muscles that function in ROF as a force couple to create anterior pelvic tilt

Hip extensors and trunk flexors

muscles that function in ROF as a force couple to create posterior pelvic tilt

Same

hip adductors on the same side and obliques on the ___ side function in ROF as a force couple to create pelvic elevation

Opposite

hip adductors on the same side and obliques on the ___ side function in ROF as a force couple to create pelvic depression

Glute M&M, lateral rotators

in ROF, pelvic rotation is created by force couple of ___ on the same side and ___ on the opposite side