AI Article Synopsis
- Scoliosis frequently occurs in boys with Duchenne Muscular Dystrophy (DMD) after they lose the ability to walk, typically between ages 9 and 12, with a study focusing on non-ambulant youth in Nepal.
- The study employed both linear and logistic regression to analyze how physical factors like muscle strength and lumbar posture affect scoliosis in 22 boys and young men, revealing a mean Cobb angle of 15.1 degrees and the significance of lumbar posture.
- Results indicated that cross-legged sitting was linked to a healthier lumbar angle and that better functional abilities correlated with reduced scoliosis severity, emphasizing the importance of posture in managing scoliosis in DMD patients.
Article Abstract
Background: Scoliosis is a frequent association in boys with Duchenne Muscular Dystrophy when the ability to walk is lost around nine to 12 years of age. This study assessed the contribution of physical factors including lumbar posture to scoliosis in non-ambulatory youth with DMD in Nepal.
Methods: Linear regression was used to assess effects of time since loss of ambulation, muscle strength, functional severity and lumbar angle as a binary variable on coronal Cobb angle; again logistic regression was used to assess effects of muscle strength and cross-legged sitting on the presence of a lordotic lumbar posture in 22 non-ambulant boys and young men.
Results: The boys and young men had a mean (SD) age of 15.1 (4.0) years, had been non-ambulant for 48.6 (33.8) months and used a median of 3.5 (range 2 to 7) postures a day. The mean Cobb angle was 15.1 (range 0 to 70) degrees. Optimal accuracy in predicting scoliosis was obtained with a lumbar angle of -6° as measured by skin markers, and both a lumbar angle ≤-6° (P=0.112) and better functional ability (P=0.102) were associated with less scoliosis. Use of cross-legged sitting postures during the day was associated with a lumbar angle ≤-6° (OR 0.061; 95% CI 0.005 - 0.672; P=0.022).
Conclusions: Use of cross-legged sitting posture was associated with increase in lumbar lordosis. Higher angle of lumbar lordosis and better functional ability are associated with lesser degree of scoliosis.
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