Temporomandibular Joint Dysfunction (TMJ) / Disc‑Clunk

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Temporomandibular Joint Dysfunction (TMJ Dysfunction) occurs when the jaw joint, disc, ligaments, or surrounding muscles stop working together smoothly. The TMJ is a complex hinge‑and‑glide joint that relies on a small cartilage disc to maintain proper alignment. When this disc becomes displaced or irritated, it can create clicking, popping, locking, or pain.

A disc‑clunk is a specific type of TMJ dysfunction where the disc slips forward and then snaps back into place during jaw opening, often producing a noticeable “clunk” sound or sensation.

Physiotherapy is essential for restoring disc mechanics, reducing muscle tension, and improving jaw alignment.

• Disc displacement (anterior disc shift)
• Ligament laxity or collagenous strain
• Jaw clenching or grinding (bruxism)
• Poor posture affecting jaw mechanics
• Trauma (impact, dental procedures, whiplash)
• Muscle imbalance or overuse
• Stress‑related jaw tension
• Arthritis or degenerative changes

• Clicking, popping, or clunking during jaw movement
• Jaw pain or tightness
• Difficulty opening the mouth fully
• Locking (jaw stuck open or closed)
• Ear pain, pressure, or ringing
• Headaches or facial pain
• Pain while chewing, talking, or yawning
• Neck stiffness or upper‑back tension

Symptoms often fluctuate depending on stress, posture, and jaw activity.

A disc‑clunk indicates that the cartilage disc is not tracking properly between the jaw bone (mandible) and skull (temporal bone). This may involve:

• Disc displacement with reduction (clicking/clunking)
• Disc displacement without reduction (locking)
• Ligament strain allowing excessive disc movement
• Muscle tension pulling the disc out of alignment

Physiotherapy focuses on restoring disc position, reducing strain, and improving joint stability.

Your physiotherapist will perform:

• TMJ joint mobility and disc tracking evaluation
• Muscle tension assessment (jaw, face, neck)
• Bite pattern and jaw alignment analysis
• Cervical spine mobility testing
• Posture and movement assessment
• Palpation to identify disc displacement or ligament strain
• Review of dental or medical imaging if available
• A personalized rehabilitation plan based on your symptoms and daily demands

Book an assessment if you experience:

• Clicking, popping, or clunking in the jaw
• Pain while chewing, talking, or yawning
• Jaw locking or difficulty opening fully
• Ear pain, headaches, or facial tension
• A history of clenching, grinding, or jaw trauma

Prompt treatment prevents chronic disc displacement and reduces the risk of long‑term TMJ dysfunction.