Lecture 11- Gait cycle and bipedal standing

Question 1

Early( stance)

Question 2

Mid stance

Question 3

Late stance

Question 4

Early swing

Question 5

Mid swing

Question 6

Late swing

Question 7

Line of gravity, describe knee, ankle, hip relative to it

Answer 7

Hip is posterior to LOG
Knee and ankle are anterior to LOG

Question 8

Describe the bipedal standing of the hip.

Answer 8

Hip is posterior to the LOG, so gravity forces it into extension, the joint is locked. that’s not much energy is needed when standing.

Question 9

Capsular ligaments of the hip, are they tight or loose in flexion/extension

Answer 9

In flexion of the hip
The anterior ligament of the hip is loose and the posterior is tight. Switch that for flexion

Question 10

Bipedal standing of the knee

Answer 10

LOG is anterior to the knee so it pushes the knee to extension, The Joint is locked, the ligament is tight, and no energy is spent while standing.

pushes the knee to extension because remember for the knee joint everything is the opposite.

Question 11

Bipedal standing of the ankle

Answer 11

LOG is anterior to the joint, pushing ankle to dorsiflexion.
(Gravity wants to put body towards feet, gravity wants you to put face on ground.)

The plantarflex muscles are opposing this, they are stabilising from gravity dorsiflexing our body.
JOINT is NOT LOCKED, plantar flexors need to stabilise, energy is consumed.

BUT OVERALL bipedal standing has very little muscular support needed