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Functional scoliosis caused by leg length discrepancy

Raczkowski JW, Daniszewska B, Zolynski K - Arch Med Sci (2010)

Bottom Line: The time needed for real equalization of limbs was 3 to 24 months.The time needed for real equalization of the discrepancy was 11.3 months.Leg length discrepancy < 2 cm is a static disorder; that is why measurements should be performed in a standing position using blocks of adequate thickness and the position of the posterior superior iliac spine should be estimated.

Affiliation: 1 Department of Orthopaedics and Rehabilitation, Medical University of Lodz, Lodz, Poland.

ABSTRACT

Introduction: Leg length discrepancy (LLD) causes pelvic obliquity in the frontal plane and lumbar scoliosis with convexity towards the shorter extremity. Leg length discrepancy is observed in 3-15% of the population. Unequalized lower limb length discrepancy leads to posture deformation, gait asymmetry, low back pain and discopathy.

Material and methods: In the years 1998-2006, 369 children, aged 5 to 17 years (209 girls, 160 boys) with LLD-related functional scoliosis were treated. An external or internal shoe lift was applied.

Results: Among 369 children the discrepancy of 0.5 cm was observed in 27, 1 cm in 329, 1.5 cm in 9 and 2 cm in 4 children. During the first follow-up examination, within 2 weeks, the adjustment of the spine to new static conditions was noted and correction of the curve in 316 examined children (83.7%). In 53 children (14.7%) the correction was observed later and was accompanied by slight low back pain. The time needed for real equalization of limbs was 3 to 24 months. The time needed for real equalization of the discrepancy was 11.3 months.

Conclusions: Leg length discrepancy equalization results in elimination of scoliosis. Leg length discrepancy < 2 cm is a static disorder; that is why measurements should be performed in a standing position using blocks of adequate thickness and the position of the posterior superior iliac spine should be estimated.

Equalization of curvature with a shoe lift
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Figure 0002: Equalization of curvature with a shoe lift

Mentions: Scoliosis which develops due to leg length discrepancy is included within functional scolioses. This type of scoliosis regresses totally or partially when its cause, that is LLD, is removed (Figure 2).

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Functional scoliosis caused by leg length discrepancy

Raczkowski JW, Daniszewska B, Zolynski K - Arch Med Sci (2010)

Equalization of curvature with a shoe lift
© Copyright Policy
Figure 0002: Equalization of curvature with a shoe lift
Mentions: Scoliosis which develops due to leg length discrepancy is included within functional scolioses. This type of scoliosis regresses totally or partially when its cause, that is LLD, is removed (Figure 2).

Bottom Line: The time needed for real equalization of limbs was 3 to 24 months.The time needed for real equalization of the discrepancy was 11.3 months.Leg length discrepancy < 2 cm is a static disorder; that is why measurements should be performed in a standing position using blocks of adequate thickness and the position of the posterior superior iliac spine should be estimated.

Affiliation: 1 Department of Orthopaedics and Rehabilitation, Medical University of Lodz, Lodz, Poland.

ABSTRACT

Background:

Introduction: Leg length discrepancy (LLD) causes pelvic obliquity in the frontal plane and lumbar scoliosis with convexity towards the shorter extremity. Leg length discrepancy is observed in 3-15% of the population. Unequalized lower limb length discrepancy leads to posture deformation, gait asymmetry, low back pain and discopathy.

Material and methods: In the years 1998-2006, 369 children, aged 5 to 17 years (209 girls, 160 boys) with LLD-related functional scoliosis were treated. An external or internal shoe lift was applied.

Results: Among 369 children the discrepancy of 0.5 cm was observed in 27, 1 cm in 329, 1.5 cm in 9 and 2 cm in 4 children. During the first follow-up examination, within 2 weeks, the adjustment of the spine to new static conditions was noted and correction of the curve in 316 examined children (83.7%). In 53 children (14.7%) the correction was observed later and was accompanied by slight low back pain. The time needed for real equalization of limbs was 3 to 24 months. The time needed for real equalization of the discrepancy was 11.3 months.

Conclusions: Leg length discrepancy equalization results in elimination of scoliosis. Leg length discrepancy < 2 cm is a static disorder; that is why measurements should be performed in a standing position using blocks of adequate thickness and the position of the posterior superior iliac spine should be estimated.

View Similar Images In: Results  - Collection
View Article: Pubmed Central -  PubMed
Show All Figures - Show MeSH
getmorefigures.php?pmc=3282518&rFormat=json&query=null&req=5