Temporomadibular Joint Flashcards
Osteoarthritis is due to?
Repetitive trauma (ex old age)
Rheumatic athritis is due to?
An autoimmune disease and found on blood serum
Degenerative joint diseases includes?
Osteoarthritis
Rheumatic arthritis
Pain that can be on the other parts of the body
Myofascial pain
abnormal positioning of the disk
and articulating surface
Internal derangement
Inflammation of the capsule
Capsularis
Inflamation of the synovioum
Synovitis
A hardened area for adhesion (decrease motion)
Capsular fibrosis
○ “Adhesions” causing a limited ROM
○ Intervention: First focus on decreasing the pain and then focus on the cause by providing therapeutic exercises
Capsular Fibrosis
○ Joint deflection into contralateral - opposite side since
it secretes more fluid and the fluid will deflect to the opposite side
○ Inflammation of synovium
○ The synovium as a response will secrete a fluid
Synovitis
○ Joint deviation into ipsilateral - same side
○ Inflammation of the joint capsule
○ Pain Management - hot or cold compress, medications, TENS Machine, Ultrasound
Capsulitis
● The disc is moving downward
● Overstretching of the retrodiscal laminae
● It’s hard to go back to its own place, it remains obstructed anteriorly
● It limits ROM
Articular Disc Displacement without Reduction
● The condyle moves first so the articular disc is pinched
producing a reciprocal click
● “Reduction” since it still goes back
● No changes in ROM but it implicates pain
○ The pain limits the ROM
Articular Disc Displacement with Reduction
What muscles are involved in Depression
Inferior Lateral Pterygoid,
Suprahyoid - Digastric
T or F
Palpate bilateral TMJ by gently placing a finger just
anterior to the external acoustic meatus while instructing the patient to perform all the movement of the mandible in relationship to TMJ
TRUE
What muscles are involved in Elevation
Temporalis, Masseter, Medial and
Superior Lateral Pterygoid
What muscles are involved in Protrusion
Masseter, Medial and Lateral Pterygoid
What muscles are involved in Retrusion
Temporalis, Anterior Digastric
What muscles are involved in Lateral Excursion
Temporalis - same side
Pterygoid - opposite side
What muscles are involved in Hyoid Stabilizer
Infrahyoid
Components of the inferior compartment
Composed of the mandibular condyle and synovium
attached to the distal aspect of the disc
Components of the superior compartment
Composed of the temporal fossa or eminence and the superior synovium attached to the disc
Motions of the TMJ
● Elevation and Depression - closing and opening
● Protrusion and Retrusion - forward and backward
● Lateral Deviation or Lateral Excursion - to the right and left
○ Excursion is 1⁄2 inch in length
Composition of Disc
Collagen, Elastin, GAGs Glycosaminoglycans
