Knee Disarticulation Lecture Flashcards
1
Q
Advantages of KD vs TF
A
- possibility of load bearing
- longer limb = lower energy consumption
- preserves growth plate in children
- Muscles remain intact
- intact femoral condyles
- possibility of lower socket trim lines
2
Q
Disadavantages of KD
Cosmesis
A
- unmatched knee centers
- bulky socket
3
Q
Disadvantages of KD
Socked design challenges
A
Distally bulbous limb
4
Q
Disadvantages of KD
Extra length
A
- component limitations
- fewer appropriate knee choices
- no room for distal suspension
5
Q
Evaluation of the patient
A
- assess tolerance for distal loading
- carefully note alignment in all 3 planes
- assess medial soft tissue
- determine best suspension method
6
Q
Supracondylar suspension
A
- built into shape of socket
- flexible liner,maybe custom
- suction hybrid
7
Q
Window Suspension
A
- very atrophied thigh
8
Q
Single axis outside metal hinges
A
- Pros: best knee duplication
- Cons: bulky, noisy, exoskeleton, not variable cadence, need external extension stop
9
Q
4 bar knee
A
- pros: shortens during flexion, makes KC close to anatomic
- Cons: limited selection of control options such as fluid control and stance flexion, microprocessors
