Q3: Stance Control KAFOs

Question 1

Definition

Stance Control KAFO (SCO)

Answer 1

controls knee motion during stance phase but allows free flexion during swing phase

Question 2

Advantage

Stance Control KAFO (SCO)

Answer 2

• reduced gait deviations
• reduced energy needed
• improves ADLs

Question 3

Indications

Stance Control KAFO (SCO)

Answer 3

• isolated uni- quad weakness
• knee tightness (<10 degrees)
• varum/valgum (<10 degrees)
• limited spasticity
• Max. weight = 275 lbs
• no transverse implications
• good cognition, motivation, balance

Question 4

Ideal Candidate (must have…)

Stance Control KAFO (SCO)

Answer 4

• Isolated unilateral quad weakness
• sound contralateral limb
• no contractures OR spasticity
• good/normal hip and ankle musculature

Question 5

Ankle activated

SCO Designs

Answer 5

Ottobock Freewalk
Becker:
1. UTX
2. Full Stride
3. Safety Stride
4. Stride 4

Question 6

Engaging Mechanism

Ottobock Freewalk

Answer 6

Spring loaded pawl lock

Spring loaded cable activates when there is simultaneous knee extension and ankle DF
* Switch - allows for free, locked, and stance control modes

Question 7

Specifications

Ottobock Freewalk

Answer 7

• DF PROM - 10 degrees or more
• Ankle MMT - DF (3-5) & PF (4-5)
• Joint deviation - can accommodate some valgum but no varum; 10 degrees of inversion and eversion
• freely adjustable ankle joint height

Question 8

Specifications

Ottobock Freewalk

Answer 8

• DF PROM - 5 degrees or more
• Ankle MMT - DF (3-5) & PF (4-5)
• Joint deviation - can accommodate 10 degrees valgum and varum; 10 degrees of inversion and eversion

Question 9

Engaging Mechanism

Becker UTX

Answer 9

Spring loaded pawl lock

Spring loaded cable activates when there is simultaneous knee extension and ankle DF

Question 10

Engaging Mechanism

Becker - Fullstride, Stride4, and SafetyStride

Answer 10

Low profile cabling system
Contraindications are hyperextension and LLD (affected side shorter)

Question 11

Hip Activated

SCO Designs

Answer 11

Fillauer Swing Phase Lock 2
Ottobock E-Mag and C-Brace

Question 12

Engaging Mechanism

Fillauer Swing Phase Lock 2 (SPL II)

Answer 12

weighted pawl, internal pendulum;
locks/unlocks with angle of the hip joint

Question 13

Specifications

Fillauer Swing Phase Lock 2 (SPL II)

Answer 13

3 modes: automatic, lock, and unlock
Increased knee flexion (151 degrees)
Can lock at 0 or 15 degrees
No foot plate necessary

Question 14

Contraindications

Fillauer Swing Phase Lock 2 (SPL II)

Answer 14

• > 10 degrees knee flexion contacture
• hip flexion contracture
• hip weakness
• poor balance
• > 10 degrees knee hyperextension

Question 15

Engaging Mechanism

Ottobock E-Mag

Answer 15

electonically controlled joint that is controlled by a gyroscope; independent of foot/anke

Question 16

Specifications

Ottobock E-Mag

Answer 16

• Prelock function
• flexion ROM 120-140 degrees
• bike mode (free knee)
• medial joint optional (depends on weight)
• Hip MMT 3-5
• accommodates coronal knee deformities

Question 17

Contraindications

Ottobock E-Mag

Answer 17

• Knee flexion contracture (15+ degrees)
• Hip weakness
• spasticity

Question 18

Engaging Mechanism

Ottobock C-Brace

Answer 18

Microprocessor controlled; custom controls for each part of gait
Features: stumble control, stance extensions, flexion damping

Question 19

Specifications

Ottobock C-Brace

Answer 19

• 2 degrees of ankle motion
• no severe spasticity
• Hip MMT 3+
• Genuvalgum less than 10 degrees
• Hip/Knee contracture less than 10 degrees
• cognitive ability
• access to charge battery