True leg length- from the distal tip of the ASIS to the distal tip of medial malloelous
Apparent leg length -form symphysis or umblicus to the distal tip of the medial malleolous
Leg length discrepancy
12.7mm (0.5 inch)까지는 correction 할 필요가 없음
The total discrepancy는 never corrected!!
0.5inch가 넘어 갈 경우
75%의 LLD는 should be corrected
1/2 inch-insole로 Corrected 그외에는 outsole로 correct!!!
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