Assessment and Diagnosis of Joint Hypermobility

Introduction to Joint Hypermobility Assessment

• The Beighton scale is a standardized 9-point scoring system used to assess generalized joint hypermobility, which is critical for diagnosing conditions like Ehlers-Danlos Syndrome (EDS) and identifying patients at risk for joint-related morbidity and complications 1, 2

Components and Scoring of the Beighton Scale

• The Beighton scale evaluates hypermobility in five areas of the body, with a maximum score of 9 points, including fifth fingers, thumbs, elbows, knees, and spine/forward bend 3, 4
• The threshold for diagnosing generalized joint hypermobility varies by age: children before puberty ≥6/9 points, adults up to age 50 ≥5/9 points, and adults over age 50 ≥4/9 points 1, 2

Clinical Application and Diagnostic Use

• The Beighton scale is a major diagnostic criterion for hypermobile EDS (hEDS), the most common EDS subtype, and for hEDS diagnosis, a score of ≥5 must be accompanied by other criteria including skin abnormalities and absence of tissue fragility 3, 4
• Approximately 25-33% of patients with hypermobile EDS develop aortic root dilation requiring cardiovascular monitoring 3, 4
• Up to 60% of patients with hEDS experience gastrointestinal symptoms 6

Screening Approach and Next Steps

• Perform the five maneuvers described in the Beighton scale, assigning points for each positive finding, and calculate the total score (0-9 points) 3, 4
• If a patient scores above the age-appropriate threshold, consider referral to medical genetics for comprehensive evaluation, obtain echocardiogram to evaluate for aortic root dilation, assess for comorbid conditions like POTS, and evaluate for gastrointestinal manifestations 1, 3, 4, 5, 6, 7, 8