Levels of LE Amputations

Question 1

Optimal length of BKA

Answer 1

Proximal 50% of tibia (20-50%)

Question 2

When is a knee disarticulation instead of a BKA indicated?

Answer 2

When there is a severe knee flexion contracture and limb ischemia

Question 3

When are Boyd and pirogoff amputations contraindicated and indicated?

Answer 3

Contraindicated in diabetes and ischemia.

Indicated only for trauma.

Question 4

In a BKA, how long should the fibula be in relation to the tibia?

Answer 4

Fibula should be 2-3 cm shorter than tibia

Question 5

Pirigoff vs Boyd amputation

Answer 5

Pirigoff = vertical calcaneal amputation
Boyd = horizontal calcaneal amputation

Question 6

Metatarsal ray amputations of which ray is more successful?

Answer 6

4th and 5th ray amputation

Question 7

In a transfemoral amputation, what surgical procedure is done to help maintain adduction position of the femur in the prosthetic socket?

Answer 7

Myodesis of the adductor magnus to the lateral femur

Question 8

What is a significant complication of lisfranc and chopart amputations? And what surgical intervention is used to prevent this?

Answer 8

Equinovarus deformity. Achilles tendon lengthening prevents this.

Question 9

What is the weight bearing status after a Syme’s amputation?

Answer 9

Partial weight bearing is possible almost immediately after procedure