Intermediate
Technical
IVT
Limb Length Discrepancy
Condition where one limb is measurably shorter than its contralateral counterpart.
Full Definition
Limb length discrepancy (LLD) refers to a difference in length between corresponding limbs, most commonly affecting the lower extremities. Discrepancies can be structural (true shortening due to bone length differences) or functional (apparent shortening due to joint contractures or pelvic obliquity). Causes include congenital abnormalities, growth disturbances, trauma, infection, or tumor. Treatment options range from observation and shoe lifts for minor discrepancies to complex limb lengthening or shortening procedures for significant differences.
Usage
Usage note: Distinguish between true (structural) and apparent (functional) limb length discrepancy.
In Context
- "The patient has a 3.2 cm limb length discrepancy following femoral shaft fracture." — orthopedic follow-up note
- "Scanogram measurement confirmed structural LLD requiring surgical intervention." — preoperative planning note
Also known as
LLD
leg length discrepancy
limb shortening
Don't confuse with
apparent limb shortening
functional leg length discrepancy