muscles of the hip - mr. brewer. hip movements video o -intro video that explains some muscles of...
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Muscles of the Hip
- Mr. Brewer
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Hip Movements Video
https://www.youtube.com/watch?v=qlCvKEOZtpo
- Intro Video that explains some muscles of the hip and the actions they create.
- Start at ~4:30.
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Actions
- Hip Flexion – (3)- Hip Extension – (3)- Hip Adduction – (5)- Hip Abduction – (1)- Inward Rotation – (1)- Outward Rotation – (1 group of 6 muscles)- Hip Extension AND Outward Rotation – (1)
Total: 15 Muscles
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Hip Flexion
Which of these pictures represents hip flexion that involves all 4 quadricep muscles?
Why?
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Hip Flexion
- Rectus Femoris – The only muscle in the quadriceps group that crosses the hip joint.
- Attaches proximally to the AIIS of the pelvis.
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Hip FlexionIliopsoas:- The Iliopsoas is a common
term used for the Psoas and Iliacus muscles in combination.
- They have different originations, but join together and insert distally at the lesser trochanter of the femur.
* Psoas - Broken down into the Psoas
Major and Psoas Minor muscles.
- Attach proximally to the LUMBAR vertebrae. (Origin)
• Iliacus – - Covers the inside of the Ilium and attaches along the Iliac Crest.
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Hip Flexion
- Pectineus – The pectineus muscle is primarily responsible for flexion of the femur at the hip.
- Because of it’s location, the pectineus also assists in hip adduction.
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Hip ExtensionBoth are considered to be “Hip Extension” exercises, but which of the following hip extension exercises involves the hamstrings more?
Why?
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Hip Extension
Hamstrings:Biceps Femoris:- Lateral hamstring muscle
Semitendinosus and Semimembranosus:- The Medial hamstring
muscles
* All 3 of the Hamstring muscles attach proximally to the ISCHIAL TUBEROSITY.
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Hip Extension
- Gluteus Maximus- Primary function is Hip
Extension.- With Knee bent, Hip
Flexion relies on the Glute Max more- so than with the leg fully extended at the knee.
- Distal insertion includes joining to the IT Band.
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Hip ABduction
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Hip ABduction
- Hip Abduction uses the muscles on the lateral aspect of the thigh and hip to move the femur from the midline of the body, laterally to the outside.
- http://www.mayoclinic.org/healthy-living/fitness/multimedia/standing-hip-abduction/vid-20084670#
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Hip ABduction
• Gluteus Medius – • The gluteus medius muscle is
a small muscle that lies directly underneath the Gluteus Maximus.
• The location on the lateral hip gives the Gluteus Medius a larger role in hip Abduction than the Gluteus Maximus which primarily is responsible
for Hip Extension.
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Hip ADDuction
Hip ADDuction – bringing the femur back to the mid-line of the body.
- Primarily uses adductor muscles that some people refer to as the “groin” muscles, located on the inside(medial) portion of the thigh.
- Which exercise shown to the right involves the Gracilis more? Why?
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Hip ADDuction
• Gracilis: – The Gracilis is the longest of the
adductor muscles.– The only adductor muscle to also
cross the knee joint for additional stability.
– Same reason as to why the Gracilis is more active with Hip Adduction that takes place while the knee is at or below 0 degrees. (Full Extension or Hyperextension)
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Hip ADDuction• Adductor Longus and Adductor
Brevis:– *Both the Longus and Brevis
muscles attach proximally to the pubis bone.
– The longus is a little longer, and also forms the medial border of the femoral triangle.
• Adductor Magnus:– The largest and deepest of the
adductor muscles. – Very large muscle that covers most
of the medial aspect of the thigh.– Forms what is called the “adductor
hiatus”
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Adductor Hiatus
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Femoral Triangle
The Femoral Triangle is a space that is formed by the borders of the different muscles and a ligament. This “Triangle” is space for nerves and blood vessels to travel.- Adductor Longus – Medially- Sartorius – Laterally- Inguinal Ligament – Superiorly
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Medial(Internal) or Lateral(External) Rotation?
1 2 3
Medial Rotation Lateral Rotation Medial Rotation
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Inward Rotation and Outward Roation
• A.K.A. Medial and External rotation of the femur.
• https://www.youtube.com/watch?v=vItv4L2ktYI – Knee in Full Extension
• https://www.youtube.com/watch?v=bZAFemNhiVk – Bent Knee (Sitting and Supine)
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Medial (Inward) Rotation
• Gluteus Minimus:– The smallest of the
gluteal muscles.– Connects from the Ilium
along the gluteal line and wraps around to connect to the greater trochanter of the femur.
– Active use of this muscles will cause the femur to rotate medially.
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External (Outward) Rotation
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Gluteus Medius and Minimus
https://www.youtube.com/watch?v=0CEeHPpYMfM – Video shows layer by layer view of gluteal muscles of the hip.- Also illustrates movements that they are involved in creating at the hip.