Jaw Locked or Hard to Open? Physiotherapy for Disc Displacement Without Reduction /by Sean Fuller, Musculoskeletal Physiotherapist
When your jaw suddenly locks or won’t open properly, it can be pretty worrying. Eating becomes difficult, yawning can hurt, brushing your teeth is awkward, and you may start wondering whether your jaw is going to stay stuck.
One possible cause is disc displacement without reduction, often called a “closed lock”.
Inside your jaw joint, known as the temporomandibular joint or TMJ, there is a small disc that helps the joint move smoothly. In a closed lock, this disc has shifted out of its usual position and does not move back into place when you open your mouth.
This can make the jaw feel stiff, painful or blocked.
You may notice:
- Your mouth suddenly does not open as far as usual
- Pain around the jaw or ear – this can be severe in many cases
- Difficulty chewing or eating firmer foods
- Your jaw moving to one side as you open
- A feeling that the jaw is stuck
- Worry or anxiety about using your jaw normally
For some people, this happens quite suddenly. For others, the jaw gradually becomes tighter and more restricted over several weeks or months.
Can physiotherapy help?
The good news is that this condition can often respond well to physiotherapy and other conservative treatments.
When I assess someone with a locked or restricted jaw, I look at how the jaw is moving, how much it can open, which muscles are tight or sore, and whether the neck or posture may also be playing a part.
Treatment may include:
- Gentle hands-on treatment around the jaw, face and neck
- Carefully applied jaw mobilisation
- Specific exercises to improve movement and control
- Strategies to settle pain and reduce muscle tension
- Advice about chewing, eating and everyday jaw use
- Treatment for contributing neck or postural issues
You may also be advised to choose softer foods for a short time, avoid repeatedly testing how wide the jaw can open, and gradually return to normal chewing as things settle.
Treatment should never feel like someone is forcing your jaw open or aggressively trying to “push” the disc back into place. The aim is to work with your jaw, not fight against it.
What does the research say?
Research supports starting with conservative care for disc displacement without reduction. Studies have found that approaches such as education, guided exercises, mobilisation and self-management can improve pain and jaw function.
I have treated jaw pain and restricted opening for many years, and I know how limiting this problem can feel. It is always rewarding to help someone move from feeling stuck and worried to eating, speaking and opening their mouth with more comfort and confidence.
If your jaw has suddenly locked, or it has been difficult to open for a while, book an appointment with my colleagues and I at Midland Physiotherapy. We can assess what is happening and put together a treatment plan that suits you.
