With the advent of the modern prosthetic care , the lengths of the amputation stump are not that important now .
A/K Amputation : 18 cm below the tip of Greater trochaenter or 12 cm from the medial joint line
B/K Amputation : 15 cm from the medial joint line ( Ideal is at the musculotendinous junction of gastrocnemius )
A/E Amputation : 20 cm from the Acromion
B/E Amputation : 18 cm from the tip of Olecranon