hip muscles (1)

+

ESS 3092: KINESIOLOGY Week 11

Transverse Abdominis

Origin Iliac crest, inguinal ligament,

thoracolumbar fascia, and costal cartilages 7-12

Insertion Xiphoid process, linea alba,

pubic crest via an aponeurosis

Location Deep

Movements Compress the ribs and viscera,

providing thoracic and pelvic stability

+Pelvis and Hip Motions

Pelvic rotation Lumbar spine motion

Right hip motion

Left hip motion

Anterior rotation/tilt

Extension Flexion Flexion

Posterior rotation/tilt

Flexion Extension Extension

Right lateral tilt Left lateral flexion Abduction Adduction

Left lateral tilt Right lateral flexion

Adduction Abduction

Right transverse rotation

Left lateral rotation

Posterior rotation

Anterior rotation

Left transverse rotation

Right lateral rotation

Anterior rotation Posteriorl rotation

5

+

Which ligament of the hip supports most of the body weight?

+Acetabulofemoral

JointLigaments

1. Iliofemoral (Y)• Supports most of BW• Supports anterior hip (standing)• Resists external, internal rotation• Limits hyperextension

Only anterior pelvic tilt

Acetabulofemoral JointLigaments

2. Pubofemoral• Resists abduction

(primarily)• Resists external

rotation (some)

3. Ischiofemoral • Resists adduction• Limits internal

rotation

No ligaments resist flexion (greatest ROM)P

A

+ 8

Anterior or Posterior View?

9

+

Which muscles comprise the illiopsoas?

+Iliopsoas – What is it comprised of?

When stabilized Flexion of hip

Thigh fixed Flexion of trunk

More active in mid-range Leg raise or curl-up

Increased activity- feet held (curl-up)

Psoas Major

Origin Transverse process of L1-5

Insertion Lesser trochanter of femur

Location Anterior/Medial

Movements Pelvis: Anterior tilt Hip: Flexion

IliacusOrigin

Iliac fossa

Insertion Femoral lesser trochanter

Location Anterior/Medial

Movements Pelvis: anterior tilt Hip: flexion

14

15+Six External Rotators of the Hip

POG QOG

External rotators Piriformis Gemellus Superior Obturator Internus Gemellus Inferior Obturator Externus Quadratus Femoris

+Piriformis

Sciatic nerve passes inferiorly Tightness

OriginAnterior surface of lateral

sacrum

InsertionGreater trochanter of femur,

along the upper medial surface

ActionsLateral rotation

+Gemellus Superior

OriginIschial spine

InsertionMedial aspect of

greater trochanter

ActionsExternal rotation

+Obturator Internus

OriginIschiopubic ramus,

obturator membrane

InsertionMedial aspect of

greater trochanter

ActionsLateral rotation

+Obturator Externus

OriginObturator membrane

and the adjacent surfaces of the pubic body and pubic and ischial rami

InsertionTrochanteric fossa

ActionsLateral rotation

+Quadratus Femoris

OriginLateral border of ischial

tuberocity

InsertionIntertrochanteric crest

ActionsLateral rotation

21+Common Injuries of the Pelvis

Tendinitis

Bursitis

Sciatica

Labral tear

Dislocation

FractureOsteoporosisTotal hip replacement

22+Sciatic Nerve

It is the longest and widest single nerve in the body, going from the sacrum to the foot on the posterior aspect

Lubosacral plexus L4-S5

23+Sciatica

Pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve

Causes The most common cause of sciatica is a

bulging or ruptured disc, pressing against the nerve roots

It can also be a symptom of other conditions such as stenosis, bone spurs, arthritis or nerve root compression

+Avg time to diagnose = 2 yr

Can lead to arthritis

May cause contralateral disfunction of knee, hip, low back

22% of athletes w/ groin pain and 55% of those mechanical hip pain of unknown eiteology

Functions: Deepens the acetabulum

Increases surface area and distributes mechanical and compressive force over a greater area. Reduces compressive forces by 92%

24

25+Dislocation

26+Osteoporosis and Fracture

27+Total Hip ReplacementVideo

28

Movement Analysis: Anterior Pelvic Tilt/Posterior

Pelvic Tilt

Plane

Axis

Action

Agonist

Antagonist

PHASE 12