Leg Length Discrepancy
Issue
Most common reason for litigation against orthopaedic surgeons in THR
Usually from lengthening
Complications of LLD
1. Nerve palsy
Sciatic nerve - tolerate average 4.4cm lengthening
Common peroneal nerve - tolerate average 2.7 cm lengthening
Lengthen by up to 15-20% of the resting nerve length
- but in reality is unknown and multifactorial