Hip and Pelvis 2

Question 1

Pubofemoral ligament

Answer 1

Limits ABD,ext, and ER

Question 2

Ischiofemoral ligament

Answer 2

Weakest of hip ligaments
taut with extension and adduction in a flex position
limits hyperextension and IR

Question 3

Iliofemoral ligament

Answer 3

strongest and stiffest hip ligament
anterior stability
taut with full ext and IR
superior band taught in add
inferior band taught in abd

Question 4

Hip Axis of Rotation

Answer 4

Center of femoral head

Question 5

Axis of ER/IR

Answer 5

extra-medullary
influenced by bowing of shaft

Question 6

Close pack position of the hip

Answer 6

Full extension
Slight IR
ABD

Question 7

Max congruency of hip

Answer 7

90° flexion
Mod. ABD
ER

Question 8

Open pack position of the hip

Answer 8

30° flexion
30° ABD
Slight ER

Question 9

Capsular pattern of hip

Answer 9

Flexion>ABD>IR
(sometimes IR has greatest limitation)

Question 10

Sagittal Plane,M/L axis

Answer 10

Femur on pelvis:
Hip flex/ext
Pelvis on femur:
A/P pevlic tilt

Question 11

Frontal Plane, A/P axis

Answer 11

Femur on Pelvis:
Hip ABD/ADD
Pelvis on Femur:
Contralateral Hip Hike/drop

Question 12

Horizontal Plane, Vertical axis

Answer 12

Femur on pelvis:
Hip Int/Ext rotation
Pelvis on Femur:
Pelvic rotation CW/CCW

Question 14

Femoral Pelvic and Osteokinematics and Endfeels
Patient supine-stabilize right leg on table and perform passive L SLR
What joint is moving?
What is limiting the motion?
End feel?

Answer 14

Femur on pelvis
Pelvis is limiting the motion due to hamstring
End feel is tissue stretch

Question 15

Femoral Pelvic and Osteokinematics and Endfeels
Ignor Contralateral Stabilization
What joints are moving?
What is limiting the movement?
End feel?

Answer 15

Femur on pelvis, pelvis on spine
Spine is limiting movement
End feel is tissue stretch

Question 16

Femoral Pelvic and Osteokinematics and Endfeels
Stabilize rR leg with L knee flexed and perform passive hip flexion
What limits the motion
What is the end feel

Answer 16

Approximation of femur on pelvis
Tissue stretch

Question 17

Femoral Pelvic and Osteokinematics and Endfeels
Prone patient, stabilize pelvis during passive SLR of R leg
What joint is moving
What limits motion
Endfeel?

Answer 17

Femur on pelvis
Rec fem
TIssue stretch

Question 18

Femoral Pelvic and Osteokinematics and Endfeels
Prone passive SLR of R leg
What joints are moving
What limits motion
Endfeel

Answer 18

Femur on pelvis, pelvis on spine
Capsule and ligaments
Tissue stretch

Question 19

Why is there more knee flexion available with hip in neutral?

Answer 19

Due to hamstring stretch

Question 20

Describe Anterior Pelvic tilt

Answer 20

Pelvic on femoral hip flexion
Force couple action of anterior hip flexors & Posterior L/S extensors
(Iliopsoas,Sartorius&Erector Spinae)

Question 21

Describe Femoral on Pelvis Hip Flexion

Answer 21

Performed by primary hip flexors
Anterior pelvic tilt from rec fem must be counterbalanced by rectus abdominis to stabilize pelvis and L/S spine

Question 22

Hip Flexion Contracture causes

Answer 22

excessive sitting
disorders of hip flex flexor spasticity
inflamed joints
adaptive shortening follows

Question 23

What can be stretched to treat HFC?

Answer 23

Tight Iliopsoas and Iliofemoral ligament

Question 24

What can be strengthened to treat HFC?

Answer 24

Glutes

Question 25

Bilateral function of hip adductors in soccer kick

Answer 25

Planted LE- eccentric glute med, pelvic adduction on femur Kicking LE- Pectineus, Adductor B&L adduct femur on pelvis

Question 26

Hip adductors from a position of hip flexion

Answer 26

Adductor longus extends hip w/ help from adductor magnus

Question 27

Hip adductors from a position of hip extension

Answer 27

Adductor longus flexes hip w/ help from rec fem

Question 28

Weakness of stance hip abductors increases

Answer 28

Genu valgus strain

Question 29

Hip internal rotators

Answer 29

no primary IRs Glute med and min Add Longus TFL

Question 30

Explain the rotation of L pelvis forward on R femur

Answer 30

R IRs rotate pelvis CW on stance femur during first 30% of gait cycle This advanced contra LE during swing phase

Question 31

Describe Posterior Pelvic Tilt

Answer 31

Pelvic on Femoral Hip Extension Force couple action of Rectus Abdominis and Glute max and hamstrings

Question 32

Hip Extensor Control of Trunk Forward Lean: Subtle forward lean

Answer 32

Recruits glute max, hamstrings, and adductor magnus

Question 33

Hip Extensor Control of Trunk Forward Lean: Significant forward lean

Answer 33

Glute max gets quiet and hamstrings and adductor magnus increase

Question 34

Hip Extensor Control of Trunk Forward Lean: Influence of Ant Pelvic tilt:

Answer 34

Ant Pelvic tilt increases torque of hamstrings while reducing it for glute max

Question 35

Femoral on pelvic hip extension demand (climbing)

Answer 35

Hip extensors and adductors from hip flex position Lumbar spine extensors support flexed trunk posture and stabilize pelvic to support foundation of hip extensors

Question 36

Trendelenburg sign

Answer 36

Contra pelvis drops due to weakness of hip abductors on stance side

Question 37

Contribution of Hip Abductors

Answer 37

Glute Med:60-65% Glute Min:20-30% TFL:4-10%

Question 38

With right leg fixed in stance-in preparation for cutting to the left

Answer 38

Contraction of R external rotators turns pelvis to the L (CCW) (Glute max w/ simultaneous hip ext& short eternal rotators: piriformis, obt. int, inf&sup gemelli, quadratus femoris

Question 39

Piriformis functions

Answer 39

With hip extended: Acts as an ER, stretched during IR With hip flexed: Acts as an IR, stretched during ER

Question 40

Piriformis Syndrome

Answer 40

tightness of the muscle limits hip rotation compress sciatic nerve stress on SI buttock, hip, post thigh, and proximal lower leg pain