Misc Equine Orthopedics Flashcards
How is P3 affected by laminits?
Rotates w/inflammation and degeneration of lamina
What are factors that predispose to laminitis?
Systemic disease, high carb diet, excessive weight bearing, steroids
How do you dx laminitis?
Palmar digital block, change in angulation on P3 rads
How do you treat laminitis?
Phenoxybenzamine
What is the MoA of phenoxybenzamine?
Alpha antagonist promotine vasodilation and blood flow to the digit
Inflammation of the growth plates of long bones in young horses
Physitis
What can physitis cause?
Conformational defects, malnutrition, growth plate compression
Tearing of ligamentous attachments to the sesamoids
Sesamoiditis
What causes sesamoiditis?
Strenuous exercise
What will you see on radiographs of sesamoiditis?
New bone formation, radiolucent lines
How do you treat sesamoiditis?
Long-term rest and NSAIDs
What is the prognosis of sesamoiditis?
Guarded to poor
What fracture is suspensory ligament desmitis assoc. w/?
Apical fracture of prox sesamoid bone
How long does it take a suspensory ligament desmitis to heal?
7-9mo
What % of horses with suspensory lig desmitis return to normal use?
55%
What is splints?
Intraosseous desmitis
Inflammation of intraosseous lig between MC3/MT3 and splint bones
Splints (intraosseous desmitits)
What causes intraosseous desmitits (splints)?
Repetitive concussion, excessive training, improper shoeing
How do you treat intraosseous desmitits (splints)?
Rest and NSAIDs
In which bone is a carpal chip fracture located?
Radius
In which bone is a carpal slab fracture located?
3rd metacarpal
How do you treat a carpal (chip or slab) fracture?
Arthroscopic repair
Immediate swelling and severe lameness are clinical signs of what?
Carpal fracture
Usually a non-reconstructable comminuted fracture that carries a grave prognosis for return to function
Tibial fracture
Why are tibial fractures usually so bad for horses?
Lack of soft tissue coverage, highly susceptible to infection
What is a prognostic indicator for a P3 fracture?
As long as articular surface is not involved, px is good
How do you repair a non-comminuted P1 fracture?
Lag screws
How do you treat an ulnar fracture?
Bone plates
What is the prognosis for an ulnar fracture?
Good, 70% return to function