Normal Gait 5 Flashcards
What is the ROM during mid stance at the ankle joint?
5° of dorsiflexion
What is the torque demand during mid stance at the ankle joint?
Increasing dorsiflexion torque
What is the muscle demand during mid stance at the ankle joint?
Soleus and gastroc contract eccentrically to control forward progression of tibia
What is the functional significance during mid stance at the ankle joint?
Calf muscles stabilize knee
Ankle rocker action created
Body progresses forward
What does the ankle rocker action provide?
Ankle becomes fulcrum for continued progression of limb over stationary foot
What is the ROM during mid stance at the subtalar joint?
Eversion position remains unchanged from end of loading response
What is the torque demand during mid stance at the subtalar joint?
Eversion torque diminishes
What is the muscle action during mid stance at the subtalar joint?
Posterior Tibialis, Soleus, and peroneals all eccentrically active
What is the functional significance during mid stance at the subtalar joint?
Control of eversion
What is the ROM during mid stance at the knee joint?
5° flexed
What is the torque demand during mid stance at the knee joint?
Extension torque
What is the muscle demand during mid stance at the knee joint?
Quads stabilize knee until knee extension torque begins
Calf muscles restrain tibia
What is the functional significance during mid stance at the knee joint?
Knee stability maintained by knee extension torque and calf muscle activity
What is the ROM during mid stance at the hip joint?
Extension to neutral
What is the torque demand during mid stance at the hip joint?
Change from flexion to extension torque
Adduction torque continues
What is the muscle demand during mid stance at the hip joint?
Hip abductors active
What is the functional significance during mid stance at the hip joint?
Stable hip joint achieved in Sagittal plane
Pelvis stabilized in frontal plane
What happens to the pelvis in mid stance?
Rotates backwards in horizontal plane to neutral
What is the ROM during terminal stance at the ankle joint?
10° of dorsiflexion
What is the torque demand during terminal stance at the ankle joint?
Dorsiflexion torque peaks
What is the muscle action during terminal stance at the ankle joint?
Calf muscle activity peaks
What is the functional significance during terminal stance at the ankle joint?
Maximal forward progression of the tibia
Heel allowed to rise
What is the ROM during terminal stance at the subtalar joint?
Progressive reduction of eversion to 2°
What is the torque demand during terminal stance at the subtalar joint?
Inversion torque created as heel rises
What is the muscle action during terminal stance at the subtalar joint?
Posterior Tibialis and soleus contract concentrically
Peroneals isometrically active
What is the functional significance during terminal stance at the subtalar joint?
Reduction in eversion increases stability of midtarsal joint
What is the ROM during terminal stance at the MTP joint?
30° of extension
What is the torque demand during terminal stance at the MTP joint?
Extension torque created
What is the muscle action during terminal stance at the MTP joint?
Calf muscle activity peaks
Posterior Tibialis and soleus contract concentrically
What is the functional significance during terminal stance at the MTP joint?
Forefoot rocker action created
Contributes to contralateral step length
What does the forefoot rocker action provide?
Metatarsal heads serve to facilitate continued forward progression of tibia
What is the ROM during terminal stance at the knee joint?
5° of flexion
What is the torque demand during terminal stance at the knee joint?
Extension torque peaks and then diminishes
What is the muscle action during terminal stance at the knee joint?
Calf muscles continue to stabilize knee by restraining tibia
Biceps femoris may be active
What is the functional significance during terminal stance at the knee joint?
Joint stability maintained
Biceps femoris may act to prevent Hyperextension
What is the ROM during terminal stance at the hip joint?
20° of extension
What is the torque demand during terminal stance at the hip joint?
Hip extension torque
Adduction torque diminishes
What is the muscle action during terminal stance at the hip joint?
Anterior fibers of TFL activate while posterior fibers of TFL diminish
What is the functional significance during terminal stance at the hip joint?
Body allowed to advance past foot to maximize step length while limb remains stable
What happens to the pelvis during terminal stance?
Anterior tilt and 5° of backward rotation in horizontal plane
