TTA Chart

Question 1

Increased dorsiflexion
Stiff heel cushion (too hard or too high)
Heel lever too long
Anterior leaning pylon (increased socket flexion)
Suspension too loose

Answer 1

excessive knee flexion

Question 2

Shoe changed (heel too high)
Knee flexion contracture
Weak quadriceps

Answer 2

excessive knee flexion

Question 3

Increased plantar flexion
Heel too soft or too low
Heel lever too short
Posterior leaning pylon (decreased socket flexion)
Suspension too tight

Answer 3

hyperextension of knee

Question 4

Shoe changed (heel lowered)
Weak quadriceps
Anterior-distal limb pain
arthritis
Excessive quadriceps use

Answer 4

hyperextension of knee

Question 5

Heel too hard or too high
Too much toe out
Socket too loose

Answer 5

ER of prosthesis

Question 6

Changed shoe to stiffer heel
Weak internal rotators
Poor pelvic control

Answer 6

ER of prosthesis

Question 7

Excessive dorsiflexion
Excessive socket flexion

Answer 7

ball of foot is >1.5inch from floor

Question 8

prosthetic stride too long

Answer 8

ball of foot is >1.5inch from floor

Question 9

Prosthesis too long
Foot outset
Medial leaning pylon
Limb not seated into socket

Answer 9

abducted gait

Question 10

Poor midline perception
Sound limb adducted
Too many ply socks or Limb is edematous
Abduction contracture
Insecurity or habit

Answer 10

abducted gaiy

Question 11

Prosthesis too short
Outset foot
Medial-lateral socket diameter too large
Lateral leaning pylon / abducted socket

Answer 11

Lateral leaning of trunk towards prosthesis or Trendelenburg / Duchenne

Question 12

Weak glut medius (compensated Trendelenburg)
Pain
Abducts foot & shifts weight with upper body

Answer 12

Lateral leaning of trunk towards prosthesis or Trendelenburg / Duchenne

Question 13

Outset foot
Medial leaning pylon / socket adducted
Pain in Peroneal Nerve
Distal fibular pain or pressure

Answer 13

valgus moment of knee

Question 14

Knee joint pathology
Ligament laxity

Answer 14

valgus moment of knee

Question 15

Inset foot
Lateral leaning pylon / socket abducted
Excessive medial-lateral socket diameter

Answer 15

verus moment of knee

Question 16

Knee joint pathology
Ligament laxity
Short residual limb

Answer 16

varus moment of knee

Question 17

Abducted socket / lateral leaning pylon
Inverted foot

Answer 17

walking on lateral border of foot

Question 18

Adducted gait on prosthetic side

Answer 18

walking on lateral border of foot

Question 19

Adducted socket / medial leaning pylon
Everted foot

Answer 19

walking on medial portion of foot

Question 20

abducted gait

Answer 20

walking on medial border of foot

Question 21

pain from socket

Answer 21

decreased stance duration

Question 22

Inadequate weight bearing
Poor balance
Bad habit

Answer 22

decreased stance duration

Question 23

Posterior leaning pylon (insufficient socket flexion)
Prosthesis too long
Toe lever too long / Forefoot too stiff
Foot too plantar flexed
Suspension too tight

Answer 23

pelvic rise
inadequate knee flexion

Question 24

Insufficient knee flexion
Bad habit /does not trust flexing knee
Intentional as patient fears knee collapse
Poor pelvic control
Changed heel height to too low

Answer 24

pelvic rise
inadequate knee flexion

Question 25

Anterior leaning pylon (Too much socket flexion) Toe lever too short / forefoot too soft Foot too dorsiflexed

Answer 25

drop off

Question 26

Hip &/or knee flexion contracture Heel height too high Hip &/or knee extensor weakness Sound side stride length too long

Answer 26

drop off

Question 27

loose suspension

Answer 27

early piston action

Question 28

Improper donning Too few ply socks / decreased volume of limb

Answer 28

early piston action

Question 29

foot too PF

Answer 29

early heel rise

Question 30

knee and/or hip flexion contracture

Answer 30

early heel rise

Question 31

Prosthesis too long Inadequate suspension Inadequate socket flexion / posterior leaning pylon Foot is too plantar flexed

Answer 31

Vaulting Circumduction Toe drag or stubbing Hip Hiking

Question 32

Improper donning Limb not seated in socket / too many ply socks Weak hip &/or knee flexion Inadequate knee &/or hip flexion Bad habit

Answer 32

Vaulting Circumduction Toe drag or stubbing Hip Hiking

Question 33

Internally rotated socket Inadequate suspension Improper proximal-medial socket pressure

Answer 33

medial or lateral whip

Question 34

Improperly donned socket Inadequate ply socks

Answer 34

medial or lateral whip

Question 35

Prosthesis too short Anterior leaning pylon

Answer 35

prosthetic stride length is too short

Question 36

Heel height too high Knee flexion contracture on amputated side Hip flexion contracture on contralateral side Pelvic retraction

Answer 36

prosthetic stride length is too short

Question 37

Prosthesis too long Posterior leaning pylon

Answer 37

prosthetic stride length too long

Question 38

Heel height too low Knee flexion contracture on contralateral side Hip flexion contracture on amputated side Pelvic protraction

Answer 38

prosthetic stride length too long

Question 39

improper socket design causing pain

Answer 39

uneven arm swing

Question 40

Bad habit / fear Insecurity in Weight bearing Uneven timing Unequal stride length Poor balance

Answer 40

uneven arm swing