In-vivo force-length relationship of the medial gastrocnemius muscle in Hypermobile Ehlers-Danlos Syndrome and Hypermobility Spectrum Disorders

Key Points

• To analyze the force-length relationship and muscle characteristics of the medial gastrocnemius in subjects with hypermobility disorders compared to healthy individuals.
• Conducted muscle assessments using ultrasound imaging.
• Measured muscle thickness, pennation angle, and echo-intensity.
• Compared findings between hypermobility disorder subjects and healthy controls.
• Identified differences in the force-length relationship of the medial gastrocnemius in hypermobile individuals versus controls.
• Noted variations in muscle thickness and pennation angle between the two groups.
• Observed differences in echo-intensity related to muscle quality.