II. Physiology: Temporomandibular Synovial joint

  1. Condylar process of Mandible articulates with mandibular fossa
    1. Contains articular disk which allows for smooth hinge and sliding motion
    2. Immediately anterior to external acoustic meatus
      1. Joint may be palpated from within ear canal
  2. Joint lined by avascular and non-innervated fibrous connective tissue
    1. Resists degeneration better than hyaline cartilage lined joints
    2. Joint pain originates from joint capsule and adjacent muscle

III. Associated Conditions

  1. Temporomandibular Joint Dysfunction
  2. Rheumatoid Arthritis
  3. Osteoarthritis
  4. Displaced Temporomandibular Joint articular cartilage
  5. Temporomandibular Joint dislocation
  6. Trismus

IV. Anatomy: Images

  1. Mandible and TMJ
    1. entMandibleBoneGrayBB176.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    2. entMandibleBoneGrayBB177.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    3. entMandibleBoneBirthGrayBB182.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    4. entMandibleBoneChildGrayBB183.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    5. entMandibleBoneAdultGrayBB184.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    6. entMandibleBoneOldGrayBB185.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    7. entJawTmjGrayBB309.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    8. entJawTmjGrayBB310.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    9. entJawTmjGrayBB311.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    10. entJawBonesGrayBB995.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  2. Muscles of mastication
    1. entPharynxMusclesGrayBB1030.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    2. entPterygoidGrayBB383.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

Images: Related links to external sites (from Google)

Ontology: Jaw (C0022359)

Definition (MSH) Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.
Definition (CSP) bony structure of the mouth that holds the teeth; consists of the mandible and the maxilla.
Definition (NCI) The bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D007568
SnomedCT 661005
HL7 JAW
English Jaws, Jaw, Jaw, NOS, jaw, Jaw structure, jaws, Jaw region structure (body structure), Jaw region structure, Jaw region
Swedish Käke
Czech čelisti
Portuguese Maxilares, Arcada Ósseo-Dentária
Spanish Maxilares, Arcada Oseodentaria, región del maxilar inferior, región de la quijada, estructura de la región de la mandíbula (estructura corporal), estructura de la región de la mandíbula, región de la mandíbula, Quijada
Finnish Leuka (jaw)
Russian CHELIUST', ЧЕЛЮСТЬ
Croatian ČELJUST
Latvian Žoklis
Polish Szczęki, Szczęki górna i dolna, Szczęka i żuchwa
French Mâchoire
German Kiefer (Knochen)
Italian Ossa mascellari
Dutch Kaak

Ontology: Mandible (C0024687)

Definition (NCI) The lower jaw bone holding the lower teeth.
Definition (NCI) The lower jaw bone holding the lower teeth. (NCI)
Definition (MSH) The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D008334
SnomedCT 91609006
English Mandible, Mandibles, Mandible, NOS, mandible, Mandibular, Mandibula, Mandibulla, MANDIBLE, mandibular, lower jaw bone, Lower Jaw, Lower jaw bone, Bone structure of mandible, Bone structure of mandible (body structure), Inferior Maxillary Bone
Portuguese Maxilar Inferior, Forame Mandibular, Forame Mentoniano, Mandíbula, Sulco Miloióideo
Swedish Underkäke
Czech mandibula, dolní čelist
Finnish Alaleukaluu
Russian CHELIUST' NIZHNIAIA, NIZHNIAIA CHELIUST', MANDIBULA, НИЖНЯЯ ЧЕЛЮСТЬ, ЧЕЛЮСТЬ НИЖНЯЯ
Croatian MANDIBULA
Latvian Not Translated[Mandible]
Spanish estructura ósea de maxilar inferior (estructura corporal), estructura ósea de maxilar inferior, estructura ósea de la mandíbula (estructura corporal), hueso de la quijada, estructura ósea de la mandíbula, mandíbula, maxilar inferior, Mandíbula, Agujero Mandibular, Agujero Mentoniano, Surco Milohioideo, Mandibula, Maxilar Inferior
Polish Żuchwa, Szczęka dolna
Japanese 下顎, 下顎骨
French Mandibule, Maxillaire inférieur
German Mandibula, Unterkiefer
Italian Mandibola
Dutch Mandibula, Onderkaak

Ontology: Masticatory muscles (C0024890)

Definition (MSH) Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)
Definition (NCI) Muscles arising in the zygomatic arch that close the jaw.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D008410
SnomedCT 53894007, 244769003
English Masticatory Muscles, Muscle, Masticatory, Muscles, Masticatory, Masticatory muscles, NOS, Muscles of mastication, NOS, Structure of muscle of mastication, Muscles of mastication, Structure of muscle of mastication (body structure), Masticatory muscle, Muscles of mastication (body structure), Muscle of Mastication, Masticatory muscles set, Set of masticatory muscles, Musculus masticatorii, masticatory muscles, muscles of mastication, muscles mastication, masticatory muscle, Muscle of mastication, Muscle of mastication (body structure), Masticatory Muscle, Masticatory muscles
Spanish Músculos Masticadores, Musculos Masticatorios, Músculos Masticatorios, Musculos Masticadores, estructura de músculo de la masticación (estructura corporal), músculos de la masticación (estructura corporal), estructura de músculo de la masticación, músculos de la masticación, músculo de la masticación (estructura corporal), músculo de la masticación, músculos masticatorios
Swedish Tuggmuskler
Czech žvýkací svaly
Finnish Puremalihakset
Russian ZHEVATEL'NYE MYSHTSY, ЖЕВАТЕЛЬНЫЕ МЫШЦЫ
Latvian Košļātājmuskuļi
Polish Mięśnie żwaczowe
French Muscles masticateurs
German Kaumuskeln
Italian Muscoli masticatori
Dutch Kauwspier, Kauwspieren, Spier, kauw-
Portuguese Músculos Mastigatórios

Ontology: Temporomandibular Joint (C0039493)

Definition (NCI) The joint between the head of the lower mandible and the temporal bone. (NCI)
Definition (MSH) An articulation between the condyle of the mandible and the articular tubercle of the temporal bone.
Definition (CSP) temporomandibular articulation: a bicondylar joint formed by the head of the mandible and the mandibular fossa, and the articular tubercle of the temporal bone.
Definition (NCI) The joint between the head of the lower mandible and the temporal bone.
Concepts Body Space or Junction (T030)
MSH D013704
SnomedCT 53620006
English Joint, Temporomandibular, Joints, Temporomandibular, Temporomandibular Joint, Temporomandibular Joints, TEMPOROMANDIBULAR JOINT, TMJ, Temporomandibular joint, NOS, temporomandibular joint, TMJ - Temporomandibular joint, Temporomandibular jt structure, Articulatio temporomandibularis, JAW JOINT, Temporomandibular joints, jaw joint, tmj temporomandibular joint, temporomandibular joint (TMJ), Temporomandibular joint, Temporomandibular joint structure, Temporomandibular joint structure (body structure), Jaw Joint
French ATM (Articulation TemporoMandibulaire), Articulation temporo-mandibulaire, Articulation temporomandibulaire
Swedish Käkled
Czech kloub čelistní, temporomandibulární kloub
Finnish Leukanivel
Italian TMJ, Articolazione temporomandibolare
Russian VISOCHNO-NIZHNECHELIUSTNOI SUSTAV, ВИСОЧНО-НИЖНЕЧЕЛЮСТНОЙ СУСТАВ
Japanese 顎関節, 側頭下顎関節
Croatian TEMPOROMANDIBULARNI ZGLOB
Latvian Deniņkaula - apakšžokļa locītava, Deniņkaula un apakšžokļa locītava
Polish Staw skroniowo-żuchwowy
Spanish articulación temporomandibular, estructura de la articulación temporomandibular (estructura corporal), estructura de la articulación temporomandibular, ATM, Articulación Temporomandibular, Articulacion Temporomandibular
German Temporomandibulargelenk, TMJ
Dutch Gewricht, kaak-, Kaakgewricht, 'Temporomanidibular joint'
Portuguese TMJ, Articulação Temporomandibular