Muscular activity during gait Flashcards
Initial contact:
Hip joint:
*gluteus muscle shortens to bring hip into extension (concerntric)
*Flexion of the hip is caused by the contraction of the rectus femoris.
knee joint:
*Extension of the knee is caused by a contraction of the quadriceps
*Flexion is caused by a contraction of the hamstrings
ankle joint:
* ankle moves from dorsiflexion (concentrically) to a neutral`
Loading response:
hip joint: moves slowly into extension, caused by a contraction concentrically of the adductor magnus and gluteus maximus muscles.
ankle joint:
*knee extenders concentrically (quads)
*knee flexors eccentrically (anterior tibia)
knee joint:
dorsiflexors eccentrically to lower the foot to the ground
body absorbs the impact of the foot by rolling in pronation.
Midstance:
hip joint:
*flexion to extension by eccentric contraction of the gluteus medius muscle.
*isometric contraction of gluteus to keep pelvis from dropping to other lower extremities
knee joint: hamstring extensors - eccentrically
ankle joint :
plantar flexors concentrically
Heel off:
hip joint: Iliopsoas concentric and glut Medius eccentric
knee joint: hamstrings (gastronomes) activated concentrically
ankle joint: plantar flexed eccentrically
pre swing:
hip joint:
hip flexors concentric contraction by Iliopsoas
knee joints:
knee flexed
quadriceps eccentrically
calf muscles centric
dorsi flexors concentrically to bring the foot backt
mid swing:
Hip joint:
gluteus muscles flex eccentrically ( isopods is concentric)
knee joint:
Hamstrings contract eccentrically
(hamstring is eccentric)
pretibial muscles is concentric
Early swing
Hip: extends then flexes because of contraction of the iliopsoas muscle
knee flexes
ankle goes from plantar to dorsi
Late swing :
Hip flexes
locked extension by the knee
hamstrings are eccentric
pretibial muscles are concentric
