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Related Experiment Videos

Joint laxity in children.

J C Cheng1, P S Chan, P W Hui

  • 1Department of Orthopaedics and Traumatology, Faculty of Medicine, Chinese University of Hong Kong, Prince of Wales Hospital.

Journal of Pediatric Orthopedics
|November 1, 1991
PubMed
Summary
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Chinese children exhibit greater joint laxity than Caucasian children, with laxity decreasing significantly with age. Specific tests like knee and ankle extension proved most sensitive in this comprehensive study.

Area of Science:

  • Orthopedics
  • Pediatrics
  • Anthropology

Background:

  • Joint laxity is a common clinical finding in children.
  • Understanding population-specific norms for joint laxity is crucial for accurate clinical assessment.
  • Previous studies have indicated potential ethnic variations in joint laxity.

Purpose of the Study:

  • To clinically assess joint laxity in a large cohort of Chinese children.
  • To establish age- and gender-specific reference data for joint laxity in this population.
  • To compare joint laxity in Chinese children with existing data from Caucasian children.

Main Methods:

  • A clinical assessment of joint laxity was performed on 2,360 healthy Chinese children aged 3-13 years.
  • The Carter Wilkinson five tests and scoring system were utilized for standardized measurement.

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  • Data were analyzed for age- and gender-related differences and compared with Caucasian norms.

    • Main Results:

    • Joint laxity significantly decreased with increasing age in Chinese children.
    • Minimal gender-based differences in joint laxity were observed.
    • Chinese children demonstrated substantially higher joint laxity across all age groups compared to Caucasian children.
    • Knee extension and ankle extension tests were identified as the most sensitive indicators of joint laxity.

    Conclusions:

    • Age is a significant factor influencing joint laxity in Chinese children, with a notable decline observed as children grow older.
    • Chinese children possess a higher degree of joint laxity compared to Caucasian children, suggesting potential ethnic variations.
    • The findings provide valuable normative data for assessing joint laxity in pediatric populations, particularly those of Chinese ethnicity.