Trunk and UE During Gait Flashcards
Components of the locomotor unit
LE’s and pelvis
Role of the locomotor unit
drives progression of the body forward
Components of the passenger unit
head, arms, trunk, and pelvis
Role of the passenger unit
goes along for the ride
How much linear displacement should there be in the trunk during the whole gait cycle?
very minimal linear displacement
How much total excursion in the transverse plane should there be in the trunk during the whole gait phase?
7 degrees
What is the trunk doing in relation to the pelvis in the transverse plane during the whole gait cycle?
R forward rotation at initial contact so the trunk is rotating to the L
-it is opposite to the pelvis
How much total excursion in the sagittal and frontal planes should there be in the trunk during the whole gait cycle?
3-5 degrees
What is the importance of sagittal and frontal plane rotation of the trunk?
it keeps the whole trunk erect
What muscles of the trunk are working during the gait cycle and when?
- erector spinae (0-20%, 40-70%, 90-100%; continuous activity from 90-20%)
- rectus abdominis (low activity throughout but bursts at 20% and 70%)
What is the functional significance of trunk motion?
- shock absorption
- preservation of upright trunk stability
How much total sagittal plane motion is there of the UE’s during the whole gait cycle?
60 degrees
- 35 degrees at shoulder
- 25 degrees at elbow
Where should the arm be in relation to the LE’s?
Flexion coincides with contralateral swing limb advancement
How much UE motion is there during initial contact?
- 25 degrees of shoulder extension
- 20 degrees of elbow flexion
How much UE motion is there at 50% of the gait cycle?
- 10 degrees of shoulder flexion
- 45 degrees of elbow flexion
