BKA and above

1. What is the reported healing rate for ischemic BKA?
2. What are advantages and disadvantages of knee disarticulation over AKA?
3. What percentage of AKAs are secondary to vascular disease?
4. What are indications for hip disarticulation or hemipelvectomy?

Answers:
1. 80-90%.
2. Knee disartic is less traumatic to tissue, minimizes blood loss, and has a long strong stump with good end-bearing quality. Disadvantages include poorer healing in dysvascular patient, and cosmesis of the prosthesis.
3. 85%.
4. Malignant tumor, extensive trauma, uncontrolled infection (gas gangrene).