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Flashcards in Gait Deviations Deck (50)
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1

How wide is BOS?

2 to 4 inches

2

What is standard bench alignment in the socket?

5 degrees of flexion and 5 degrees of adduction

3

Reason for bench alignment:

elongate quads muscles so they are better prepared to accept full weight of the body

4

Reason for bench alignment in adduction:

ensures that the foot is sufficiently inset to create the appropriate varus moment during stance; this properly loads the proximomedial and distolateral aspects

5

Four goals in prosthetic alignment:

1. Facilitating heel strike at initial contact
2. Providing adequate single limb stability during stance phase
3. Creating smooth forward progression during the transition from early to late stance phase
4. Insuring adequate swing phase toe clearance

6

Causes of hyperextension:

Heel cushion that is too soft
Keel or toe level arm that is too long or too firm
Laxity of posterior capsule or hamstring tendon

7

When is pistoning seen?

Socket it too large or inadequate suspension

8

Where is pistoning best observed?

bottom of shin
near knee cap

9

What can cause excessive varus?

Too much inset of prosthetic foot

10

What causes drop off?

Keel or toe level is too soft or too short
Shoe heel height too high

11

What is foot slap?

rapid PF after heel contact

12

Causes of foot slap:

Soft plantarflexion bumper
Insufficient plantarflexion resistance in prosthetic foot

13

Causes of hyperextension of knee:

Heel cushion too soft; keel or toe lever arm that is too long or too firm

14

Antomical cause of hyperextension of the knee:

laxity of posterior capsule of knee or hamstring tendon

15

Where is pistoning seen?

bottom of shin
near knee cap: shape between limb and socket wall

16

Causes of pistoning:

Socket it too large or inadequate suspension
Heel cushion too soft

17

What is excessive external rotation?

Lateral movement of forefoot at beginning stance

18

Causes of excessive external rotation:

keel is too hard/firm

19

Causes of excessive varus:

Too much inset of prosthetic foot
M-L dimension is excessive
Toe out

20

Causes of vaulting:

Too long prosthesis/suspension
Lack of toe clearance
Knee too stiff

21

Causes of asymmetrical shoulder movement:

Leg length discrepancies

22

Causes of drop off:

Keel or toe lever is too soft or too short
Shoe heel height too high

23

Causes of excessive abduction:

Walking on lateral side of foot; socket in excessive abduction relative to limb

24

Causes of excessive adduction:

Walking on medial side of foot, socket maybe in excessive adduction

25

Causes of excessive heel compression:

heel to soft

26

Causes of excessive valgus:

Insufficient medial displacement of foot

27

Causes of hip hiking:

Prosthetic too long
Knee with insufficient friction

28

Causes of medial whip:

excessive ER of knee

29

Causes of lateral whip:

excessive IR of hip

30

Causes of lateral trunk bending:

Insufficient length of prosthesis
Weak hip abductors