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قسمت دیستال اندام حرکتی قدامی اسب, pastern, fetlock, coffin - Coggle…
قسمت دیستال اندام حرکتی قدامی اسب
cannon
third metacarpal (cannon) is oval vs longer & rounder hindlimb cannon
longitudinal fractures
of distal extremity of cannon
more common in fore rather than hind
more common on lateral rather than medial
articulation
of distal extremity of cannon
third metacarpal bone of cannon - proximal phalanx - two sesamoids bone
splint (disease)
more common in fore rather than back
tension increase between second and third metacarpal bone
more common on medial rather than lateral
proximal sesamoid (2s)
palmar annular ligament of sesamoid bone adheres to the superficial flexor tendon
flexor tendons change direction in contact surface with P sesamoid bones
apical surface fracture
fractures are most often of all the bones
followed in frequency by the metacarpal and carpal bones (known as the big three
due to excessive pressure from the deep digital flexor tendon
side of injection to palmar pouch
between the sesamoid bone and the metacarpus, directly through the collateral ligament of the lexed joint
proximal phalanx P1
middle phalanx (PII)
half as long as p1
articulate with distal sesamoid bone (palmar distal sur)
collateral ligaments of the pastern joint
bearing surface for the deep flexor tendon
distal phalanx (coffin bone)
common digital extensor tendon inserts to extensor p
articulate with distal sesamoid bone (palmar distal sur)
semilunar crest for attachment of deep flexor tendon
distal sesamoid (navicular) bone
navicular bone disease
More common in fore rather than hind
Drug treatment : Tildren
Nerve block
Drug: lidocaine 2% 2 cc
Surgical treatment : neurectomy
radius
tendons
lateral digital extensor tendon
lateral to the common tendon
ends on a roughening on the dorsal aspect of PI
superficial digital flexor
end on proximal extremity of PII
tendinous interosseus muscleor suspensory ligament
common digital extensor tendon
protected by synovial bursa over the dorsal pouch of the fetlock
ends on the extensor process of PIII
deep digital flexor
end on semilunar crest of PIII
DDF desmitis is the most common soft tissue injury leading to lameness
pastern
conformation
upright pastern
short upright
long upright
long sloping pastern
suspensory desmitis
only the dorsal pouch is accessible for puncture
normal degree with horizontal plane in fore is 53-8 degree
high ring bone
fetlock
osselets
traumatic arthritis of fetlock joint call
more common in fore rather than back
distention of joint call wind puffs or galls
distal and palmar pouch
coffin
only the dorsal pouch is accessible for puncture
low ring bone