Sandbox: Difference between revisions
No edit summary |
No edit summary |
||
| Line 47: | Line 47: | ||
[[File:Superior Dislocation.jpeg|100px]] | [[File:Superior Dislocation.jpeg|100px]] | ||
|} | |} | ||
==Background== | |||
[[File:Gray311.png|thumb|Sagittal section of the articulation of the mandible.]] | |||
===Anterior Dislocation=== | |||
*Most common dislocation | |||
*Mandibular condyle forced in front of the articular eminence | |||
*Risk factors: | |||
**Prior dislocation | |||
**Weak or lax capsule | |||
**Ligamentous injury | |||
*Often occurs spontaneously while patient is yawning, "popping" ears, or laughing | |||
===Posterior Dislocation=== | |||
*Follows a blow to the mandible that may or may not break the condylar neck | |||
*Condylar head may prolapse into the external auditory canal | |||
===Lateral Dislocation=== | |||
*Often associated with mandibular fracture | |||
===Superior Dislocation=== | |||
*Occur from blow to the partially opened mouth | |||
*Associated with cerebral contusions, facial nerve palsy, deafness | |||
Revision as of 21:57, 12 December 2019
| Dislocation Type | Mechanism | Additional Comments | Associated with fracture | Examples |
|---|---|---|---|---|
| Anterior |
|
|
|
|
| Posterior |
|
|
|
|
| Lateral |
|
|
|
|
| Superior |
|
|
|
|
Background
Anterior Dislocation
- Most common dislocation
- Mandibular condyle forced in front of the articular eminence
- Risk factors:
- Prior dislocation
- Weak or lax capsule
- Ligamentous injury
- Often occurs spontaneously while patient is yawning, "popping" ears, or laughing
Posterior Dislocation
- Follows a blow to the mandible that may or may not break the condylar neck
- Condylar head may prolapse into the external auditory canal
Lateral Dislocation
- Often associated with mandibular fracture
Superior Dislocation
- Occur from blow to the partially opened mouth
- Associated with cerebral contusions, facial nerve palsy, deafness