Hypermobility in Children: “Bendy” Joints Explained
Many children are naturally flexible. For some, this is simply a normal variation of development. For others, increased joint flexibility can contribute to discomfort, fatigue, or reduced stability, particularly as activity levels increase or during periods of growth.
Understanding when hypermobility is part of typical development and when support may be helpful can guide families in deciding whether assessment is needed.
What is hypermobility?
Hypermobility refers to joints moving beyond the range typically expected for a child’s age. Children are generally more flexible than adults, and some sit at the higher end of this normal spectrum.
Hypermobility itself is not a diagnosis. Many children with flexible joints have no symptoms and do not require treatment.
When can hypermobility cause issues?
Some children with increased flexibility manage daily activities without issue. Others may experience symptoms such as:
ankles that “roll” easily or frequent minor sprains
leg or foot fatigue after walking, running, or sport
pain later in the day or after activity
reduced endurance or slower movement compared with peers
balance or coordination difficulties
Symptoms often relate not just to joint range, but to how well strength, coordination, and load tolerance support that range.
What does current evidence suggest?
Research and clinical guidance indicate that:
joint hypermobility is common in children and often reduces with age
treatment is not required in the absence of symptoms
children with symptoms often respond well to strengthening and balance-focused interventions
gradual progression of activity supports confidence and endurance
improving muscle control around flexible joints can reduce fatigue and discomfort
Management focuses on function and participation rather than changing joint flexibility itself.
How we assess hypermobility
Assessment typically considers:
joint range of motion
muscle strength and endurance
balance, coordination, and functional control
walking and running patterns
history of sprains, fatigue, or pain
current activities, sport, and goals
The emphasis is on how flexibility affects comfort, movement, and participation in daily life.
Management strategies
Where support is needed, management may include:
strengthening programs focused on feet, ankles, and lower limbs
balance and proprioception exercises
activity planning to avoid overload during growth or busy periods
footwear advice to improve stability and comfort
collaboration with physiotherapists, occupational therapists, or medical practitioners when appropriate
The goal is improved comfort, confidence, and participation in activity.
When to seek help
Consider seeking assessment if your child’s flexibility is associated with pain, fatigue, frequent injuries, reduced participation in sport or play, or concerns about balance or confidence with movement.
This information is general in nature and is not a substitute for individual assessment, diagnosis, or medical advice from a qualified health professional.
Sources
The Royal Children’s Hospital Melbourne – Kids Health Info: Joint hypermobility
NHS UK – Joint hypermobility in children
Remvig L et al. Joint hypermobility and musculoskeletal symptoms in children (summary evidence)
Australian Physiotherapy Association & Australian Podiatry Association – paediatric consumer resources