Limb Length Discrepancy
Also written as: LLD — Limb Length Discrepancy
A measurable difference in length between paired limbs, requiring compensation strategies and potential orthotic intervention in rehabilitation.
Full Definition
Limb length discrepancy (LLD) refers to a measurable difference in length between paired extremities, most commonly affecting the lower limbs. This condition can be structural (true anatomical difference) or functional (apparent difference due to joint contractures or postural compensations). LLD can result from congenital conditions, growth disturbances, trauma, infection, or surgical procedures. In orthopedic rehabilitation, even small discrepancies can significantly impact gait mechanics, posture, and joint loading patterns, potentially leading to secondary problems in the spine, pelvis, and lower extremities. Management strategies include shoe lifts, orthotic devices, exercise programs to address compensatory patterns, and in severe cases, surgical limb lengthening or shortening procedures.
Usage
Usage note: Always specify measurement method and distinguish between structural and functional discrepancies.
In Context
- "Scanography revealed a 2.5cm limb length discrepancy requiring orthotic compensation." — Diagnostic imaging report
- "The patient's compensatory gait patterns were attributed to the underlying limb length discrepancy." — Gait analysis report