Temporomandibular Joint Disorders – Diagnostic, Therapy

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Dysfunctional Disorders[edit | edit source]

Normal functional activity[edit | edit source]

Adaptive Function[edit | edit source]

Parafunctional Disorder[edit | edit source]

Muscle Disorders[edit | edit source]

Reflex muscle splinting[edit | edit source]
Trismus or myospasm[edit | edit source]
Myofascial pain or trigger pain syndrome[edit | edit source]
Myositis[edit | edit source]
Contracture[edit | edit source]
Hypertrophy[edit | edit source]
Neoplasms[edit | edit source]

Disc Interference Disorders[edit | edit source]

Disc Displacements[edit | edit source]
Disc Dislocation with spontaneous reduction[edit | edit source]
Disc Dislocation without reduction[edit | edit source]

Internal Joint Derangement[edit | edit source]

Causes[edit | edit source]

  • Effusions and hemarthroses
  • Structural abnormalities of the articular surfaces
  • Intracapsular Adhesions
  • Arthropathies (Inflammatory diseases, Osteoarthritis, crystals depositions arthropathy)

Mobility Disorders[edit | edit source]

Ankylosis[edit | edit source]

Stiffening/Fixation of a joint as the result of a disease process with fibrous or bony union across it.

Causes[edit | edit source]

  • Childhood Trauma
  • Arthritis
  • Joint Infections
  • Tumors
  • Mastoid Disease


Recurrent Mandibular Dislocation[edit | edit source]

Displacement of 1 component of the joint beyond its normal limits without spontaneous return to its normal position.


Diagnostics[edit | edit source]

Arthroscopy: Insert sheath w/ a trocar into the joint. Replace trocar w/ scope. Illuminate the joint fiberoptically. Irrigate the joint cia the sheath and an eyresis cannula. View the joint via camera attached to the scope. SOmetimes instrument the joint via a 2nd part. Adv: Min invasive. Disadv: Limited Scope for reconstructive surgery, requires high level of operator skill. Comps: Failure to enter joint cleanly. Phys injury to joint capsule and or joint surfaces. Bleeding along entry tract apply pressure. Scope maybe misdirected towards EAM or up towards middle cranial fossa.

Therapy[edit | edit source]

Arthropcentesis. Def: Aspiration of fluid drom a joint through a needle.

Total Replacement of TMJ: Expensive and no easy scape if unsuccessful and symptoms continue therefore last resort.

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