Pelvic Girdle and Hip Joint

Question 1

Hip Joint

Answer 1

Designed for weight bearing and locomotion

Question 2

Which is more stable, shoulder joint or hip joint?

Answer 2

hip joint is more stable, but can move through reduced ROM

Question 3

Why is the hip joint more stable?

Answer 3

Acetabulum is a much deeper socket

Strong ligaments are positioned posterior and anterior to the femoral head

Any tension in these ligaments twists the head of the femur deeper into the acetabulum,
e.g. during hip extension

Question 4

What type of joint is the hip joint?

Answer 4

A ball and socket joint

Question 5

The hip joint is comprised of…

Answer 5

The head of femur connecting w/ acetabulum of pelvic girdle, the pelvic girdle, and the femur

Question 6

What is the longest bone in the body?

Answer 6

the Femur

Question 7

Pelvic Girdle

Answer 7

contains the right & left pelvic bone joined together posteriorly by sacrum

the pelvic bones are the ilium, ischium, & the pubis

Question 8

Sacrum

Answer 8

extension of spinal column with 5 fused vertebrae

extending inferiorly is the coccyx

Question 9

3 ares of the pelvic bone

Answer 9

Ilium (upper two fifths), Ischium (posterior & lower two fifths), Pubis (anterior & lower one fifth)

Question 10

Joints (anteriorly)

Answer 10

Two pelvic bones join to form symphysis pubis, amphiarthrodial

Question 11

forms the sacroiliac joints posteriorly of the pelvic girdle

Answer 11

Sacrum; located between the 2 pelvic bones. Forms…

Question 12

Joints

Answer 12

Large & heavy bones covered by thick, heavy muscles

Very minimal oscillating-type movements occur in sacroiliac joints, as in walking

Question 13

Body movements usually involve…

Answer 13

usually involve entire pelvic girdle & hip joints

Question 14

Acetabulofemoral joint

Answer 14

most mobile joints of body (except glenohumeral)

Question 15

what type of joint is the acetabulofemoral joint

Answer 15

Enarthrodial-type joint

Femoral head inserting into acetabulum
Reinforced by extremely strong & dense ligamentous capsule, especially anteriorly

Question 16

Ligamentum Teres femoris

Answer 16

Direct attachment from the acetabulum to the femoral head

Question 17

Acetabulofemoral joint; Iliofemoral or Y ligament of Bigelow

Answer 17

located anteriorly, prevents hyperextension

Question 18

Acetabulofemoral joint; Pubofemoral ligament

Answer 18

located anteromedially & inferiorly, limits excessive extension & abduction

Question 19

Acetabulofemoral joint; Teres ligament

Answer 19

attaches from deep in acetabulum to a depression in femoral head, slightly limits adduction

Question 20

Acetabulofemoral joint; Ischiofemoral ligament

Answer 20

located posteriorly, extends from ischium to trochanteric fossa of femur, limits internal rotation

Question 21

Hip flexion

Answer 21

movement of femur straight anteriorly toward pelvis

Question 22

Hip extension

Answer 22

movement of the femur straight posteriorly away from the pelvis; sometimes referred to as hyperextension

Question 23

Hip abduction

Answer 23

movement of femur laterally to side away from midline

Question 24

Hip adduction

Answer 24

movement of femur medially toward midline

Question 25

Hip external rotation

Answer 25

rotary movement of femur laterally around its longitudinal axis away from midline; lateral rotation

Question 26

Hip internal rotation

Answer 26

rotary movement of femur medially around its longitudinal axis toward the midline; medial rotation

Question 27

Hip diagonal abduction

Answer 27

movement of femur in a diagonal plane away from midline of body

Question 28

Hip diagonal adduction

Answer 28

movement of femur in a diagonal plane toward midline of body

Question 29

Anterior pelvic rotation

Answer 29

anterior movement of upper pelvis; iliac crest tilts forward in a sagittal plane; anterior tilt

Question 30

Posterior pelvic rotation

Answer 30

posterior movement of upper pelvis; iliac crest tilts backward in a sagittal plane; posterior tilt

Question 31

Anterior & posterior pelvic rotation

Answer 31

sagittal or anteroposterior plane