Proximal Forelimb Lameness In Horses Flashcards
MC3 diaphyseal fracture
Clean break - many configurations
Acute lameness & swelling
Minimal tissue/vasculature
Internal fixation required
Patient and prognosis for salter Harris fracture
MC3 - foals
Internal fixation - good prognosis
Splint bones
Accessory bones on either side of the cannon bone
function of MC2
Bears weight directly from C2
Function of MC4
Shares weight bearing load of C4 w MC3
Proximal splint bone fracture
Direct trauma
Internal fixation or removal
Good prognosis
Features of dorsal metacarpal disease
Bucked shins, common in racing horses, dorsal MC3 swelling/pain
Stress induced bone remodeling
Popped splints
Bench knee conformation
Interosseous ligament strain
Periostitis - common kick injury usually involving the suspensory ligament
Carpal anatomy
3 joints - radiocarpal, Intercarpal, carpometacarpal
7 bones - accessory, ulnar carpal, intermediate carpal, radial carpal, C1-4
Common injury to the carpal in race horses
Chip fracture, secondary injury due to stress on subchondral bone
Arthroscopy removal
DJD is a common result if untreated
Common in fetlock & carpus
What view should be taken to diagnose a C3 slab fracture
Skyline - to identify location & depth of fracture
Occurs in racehorses due to stress remodeling
Reconstruction or stabilization in necessary
Carpal canal syndrome
Sheath swelling
DDF tendon Lesion
osteochrondroma = inflammation is secondary to DDF and causes irritation
Features of shoulder fractures
Acute lameness
Trauma/crepitius
Painful - resists palpation/flexion
Surgical options
DJD and lameness if not treated
Features of shoulder arthritis
Lameness
Insidious onset
Club feet
Arthroscopy for debridement
Poor prognosis for joints
Danger of transporting a horse w radial fracture
Movement / instability from travel could displace the joint/fracture or make an incomplete become a complete fracture. Both have poor prognosis
