When performing a total hip arthroplasty, it is essential to correct any pre-existing leg-length discrepancy during surgery

Leg-length discrepancy (LLD) in individuals experiencing total hip arthroplasty (THA) is related to a substantially higher fall risk, length of post-operative hospital in-patient stay, elevated implant-related adverse events, and earlier revision. Therefore, it is essential to try to avoid LLD when implanting a THA. Several studies focus on this issue, including the following: Accelerometer-based portable navigation system, preoperative digital templating, robot-assisted surgery, the anatomical marker positioning method (shoulder-to-shoulder) and the artificial intelligence-based three-dimensional planning software system. The aforementioned methods should be familiar to surgeons who perform THA procedures, as a fundamental objective of this surgical intervention is to avoid LLD.