What is a knee immobiliser?
A knee immobiliser is designed to restrict bending and keep the knee in a relatively fixed position.
It is commonly used where movement needs to be minimised temporarily after injury or surgery.
What is a ROM knee brace?
A range-of-motion brace uses adjustable hinges to control how far the knee can bend and straighten.
It allows more controlled movement than a simple immobiliser.
What is the main difference?
An immobiliser mainly restricts movement, while a ROM brace allows movement within chosen limits.
When might a knee immobiliser be used?
It may be used in the early stages after certain injuries or procedures when the knee needs to remain protected in a more fixed position.
When might a ROM knee brace be used?
A ROM brace may be used when controlled movement is permitted but unrestricted bending or straightening is not yet appropriate.
How is a ROM brace different from a normal hinged knee brace?
A standard hinged brace allows free movement through its design, while a ROM brace has adjustable stops or locks that can limit flexion and extension.
Can a ROM brace be locked straight?
Many designs can be locked in extension, but whether this should be done depends on the rehabilitation plan.
Who decides the ROM settings?
The settings should normally be specified by the surgeon, physiotherapist, orthotist or other clinician managing recovery.
Can a ROM brace completely immobilise the knee?
Some ROM braces can be locked so that movement is greatly restricted, but this does not mean they should automatically replace an immobiliser.
Can you walk in a knee immobiliser?
Walking instructions vary according to the injury, surgery and weight-bearing status.
Use walking aids or assistance where prescribed.
Can you walk in a ROM knee brace?
Often yes, but only according to the permitted weight-bearing and ROM settings.
Which is more restrictive?
A knee immobiliser is generally more restrictive because its purpose is to minimise knee movement.
How should each brace fit?
Both should remain centred on the knee, with straps secure and any hinges correctly aligned.
They should not cause numbness, severe pressure or persistent skin damage.
What should you check during wear?
Check strap position, brace alignment, swelling, skin condition and whether the hinges remain at the prescribed settings.
When might someone change from an immobiliser to a ROM brace?
A staged progression may occur when the treating team decides that some controlled movement can safely begin.
This transition should be clinically directed rather than self-selected.
How long is a ROM brace usually needed?
There is no universal duration. Wear time depends on the procedure, injury and progress through rehabilitation.
Key difference: immobiliser = movement restricted; ROM brace = movement controlled. Do not change settings or substitute one for the other without the rehabilitation plan being updated.
When should you seek help?
Contact the treating team if the brace repeatedly slips, the settings change unexpectedly, pain or swelling increases, the skin breaks down or you are unsure about weight-bearing or movement limits.
