hip muscles (1)
TRANSCRIPT
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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
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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
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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
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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%
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25+Dislocation
26+Osteoporosis and Fracture
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Movement Analysis: Anterior Pelvic Tilt/Posterior
Pelvic Tilt
Plane
Axis
Action
Agonist
Antagonist
PHASE 12