limb-length inequality
Condition where paired limbs differ in length, potentially causing functional impairment and secondary complications.
Full Definition
Limb-length inequality (LLI) refers to a measurable difference in length between paired extremities, most commonly affecting the lower limbs. In pediatric patients, this can result from congenital conditions, growth plate injuries, infections, tumors, or neuromuscular disorders. The discrepancy may be classified as functional (apparent shortening due to contractures or deformity) or structural (true bone length difference). Clinical significance depends on the magnitude of discrepancy, with differences greater than 2-3 cm typically causing noticeable gait abnormalities. Management options include observation, shoe lifts, epiphysiodesis of the longer limb, or limb lengthening procedures, with treatment decisions based on predicted final discrepancy, patient age, and functional impact.
Usage
Usage note: Preferred term over 'limb length discrepancy' in formal documentation; specify whether functional or structural.
In Context
- "Scanogram revealed a 2.5 cm limb-length inequality with predicted adult discrepancy of 4 cm." — Radiology report
- "The patient's limb-length inequality resulted in compensatory pelvic obliquity and lumbar scoliosis." — Clinical assessment