Week 7 (Standing Up) Flashcards
Kinematics: How do the shoulder, knee and feet move when standing up?
- Shoulder moves forwards, upwards and back slightly
- Knee moves forward slightly and back to start position
- Feet start in slight dorsiflexion
- Knee angle varies depending on height of chair
What % is thighs off at?
30%
What muscles turn on when standing up?
- Tibialis anterior turns on before movement happens to dorsiflex to pull the shank forward and translate the knees
- Hip and knee extensors help raise upwards
- Gastrocnemius and soleus brake to pull you back to upright in final standing position
Kinetics: Force
Have to be able to lift bodyweight off seat so there is more force through feet than bodyweight (150%)
What are the important components of pre-extension phase during standing?
- Slight dorsiflexion so ankles are behind knees
- Inclination of trunk forward by hip flexion at hips with extended trunk
What are the important components of extension phase during standing?
- Dorsiflexion at the ankle to move knees forward
- Extension at the hip and knees for final standing alignment
How to clinically measure standing up?
- Timed 5 repetitions
- Maximum weight through affected leg (using scales)
- Lowest height they can stand from
What are the adaptive behaviours people show when standing up during pre-extension?
- Wide BOS
- Weight bourne principally through intact side
What are the adaptive behaviours people show when standing up during extension?
- Fall backwards
- Push through arms
- Weight bourne principally through intact side
- Final alignment flexed
What does changing the foot placement do to standing?
Changes the leg loading
Which foot do you want to place in front or behind to promote loading of the affected side?
Place the affected foot at the back and good foot in front
What should the initial alignment of standing up be?
Upright
Encouraging rapid movement of shoulders forward and up
Does increasing the seat height make it easier or harder?
Easier
Does decreasing the seat height make it easier or harder?
Harder
If a patient is standing to walk; and we want to load the R leg, what leg do we first step with?
Left