Thigh Muscles/Ligaments & Hip Rotators Flashcards
Fascia
Connective tissue that runs throughout the body to provide structure and support. (Some parts of the body’s fascia are named)
Fascia of the thigh is called the _______________.
Fascia Lata
Fascia Lata
Connective tissue that invests throughout the thigh and surrounds the thigh muscles in a dense tubular sheath
Iliotibial Band
-Fascia Lata thickens laterally - this very strong part of the fascia lata is called the iliotibial band
-Attatches: superiorly to the tubricle of the iliac crest and inferiorly to Gerdy’s Tubricle and Patella
Psoas Major (Attachment)
-Superior/Proximal attachment: Sides of T-12-L4 vertebrae and the associated intervertebral disks
-Inferior/Distal attachment: Lesser trochanter of the femur
Psoas Major (Action)
Action: Works with iliacus to flex the hip joint (when low back is fixed and femur is moving
Action: Flexes the lumbar spine (when femur is fixed and low back is moving)
What is the prime mover for hip flexion?
Psoas Major
Iliacus (Attachment)
Superior/Proximal attachment: Iliac Fossa
Inferior/Distal attachment: Lesser Trochanter
Iliacus (Action)
-Action: Works with Psoas Major to flex the hip joint (when pelvis is fixed and Femur is moving)
-Action: Pulls the hip bone anteriorly (when Femur is fixed and Pelvis is moving)
Gluteus Maximus (Attachment)
Superior/Proximal attachment: External and posterior surface of the ilium, posterior surface of the sacrum and coccyx, sacrotuberous ligament
Inferior/Distal attachment: 3/4 of the fibres attach into the iliotibial band, 1/4 of the fibres attach to the gluteal tuberosity
Gluteus Maximus (Action)
Action: Hip joint extension (Prime Mover)
Action: Hip joint lateral rotation
Action: Hip abduction
What is the prime mover for hip extension?
Gluteus Maximus
What is the prime mover for hip abduction?
Gluteus Medius
Gluteus Medius (Pelvic Deltoid) (Attachment)
-Superior/Proximal attachment: external Illium (anterior 2/3rds)
-Inferior/Distal attachment: Lateral surface of the Greater Trochanter
Gluteus Medius (Pelvic Deltoid) (Action)
-Action: Hip joint abduction (Prime Mover)
-Action: Anterior Fibres - hip joint flexion and medial rotation
-Action: Posterior Fibres - hip joint extension and lateral rotation
What muscle is responsible for pelvic support during weight bearing?
Gluteus Medius
Weakness in muscles results in __________________.
Trendelenburg Gait
Gluteus Minimus (Attachment)
-Superior/Proximal attachment: External Ilium (deep to gluteus medius)
-Inferior/Distal attachment: Anterior surface of the Greater Trochanter
Gluteus Minimus (Action)
-Action: Hip joint abduction
-Action: Hip joint flexion
-Action: Hip joint medial rotation
Tensor Fascia Lata (TFL) (Attachment)
-Superior/Proximal attachment: Outer ASIS
-Inferior/Distal attachment: Iliotibial Band (Approx.1/3rd down the thigh)
Tensor Fascia Lata (TFL) (Action)
-Action: Hip joint flexion
-Action: Hip joint abduction
-Action: Hip joint medial rotation
Piriformis (Attachment)
-Superior/Proximal attachment: Anterior Sacrum travelling through the Greater Sciatic Notch to the…..
-Inferior/Distal attachment: Posteromedial aspect of the Greater Trochanter
Piriformis (Action)
-Action: Hip joint lateral rotation (in anatomical position)
-Action: Hip joint abduction - *When hip is flexed up to approx. 60degrees
-Action: Hip joint medial rotation - *When hip is flexed greater than 60degrees
Gemellus Superior (Action)
Action: Hip joint lateral rotation
Obturator Internus (Action)
Hip joint lateral rotation
Gemellus Inferior (Action)
Hip joint lateral rotation
Obturator Externus (Action)
Hip joint lateral rotation
Quadratus Femoris (Attachment)
Superior/Proximal attachment: Lateral Ischial Tuberosity
Inferior/Distal attachment: Interochanteric crest
Quadratus Femoris (Action)
Hip joint lateral rotation
Very strong part of the fascia lata is called the_______________.
Iliotibial Band
