TMJ Flashcards
What classification system modified from AO CMF of TMJ in dog and cats is this fracture?
A condylar process fracture
A fracture line extends caudal to the mandibular notch
What fracture complexity is this fracture
fracture complexity - no fragmentation
What fracture complexity is this fracture ?
Fracture complexity - minor fragmentation
What fracture complexity is this fracture?
Fracture complexity - major fragmentation
What type of fracture displacement is this fracture?
Fracture displacement 0 - incomplete
full surface contact
What fracture displacement is this fracture
Fracture displacement 1
Partial - some surface contact
What fracture displacement is this fracture?
Fracture classification 2
Loss or no contact
complete displacement
What is a dislocation?
Temporary displacement of bone from its normal position in a joint
What is the % of TMJ fractures of all maxillofacial fractures and are they bilateral or unilateral?
56% TMJ fractures- 71% unilateral
Mestrinho et al, CT characterisation and classification of feline temporomandibular joint trauma: a case series of 79 cats, JFMS 2022, WHat was the most common direction in TMJ luxation ?
Rostrodorsal
What is more common - intra articular or extra articular TMJ fractures?
77.2% of intra articular fractures - more common than 32.9% extra articular fractures
Mestrinho et al, CT characterisation and classification of feline temporomandibular joint trauma: a case series of 79 cats - what is the likelihoods that high rise cats have bilateral TMJ fractures ?
High rise cats have 13.1 x more likely to have bilateral injuries of TMJ
What is the normal vertical mandibular range of motion in a cat ?
vROM in a cat is 41-84 mm
What luxation is this?
Caudal TMJ luxation
Rostro dorsal luxation
