diseases of tendons, ligs, digital sheath Flashcards
tendon composition
tenocytes btw collagen fibres
matrix - water, collagen, non collagenous proteins
tendon compostion
tenocytes btw collagen fibres
matrix - water, collagen, non collagenous proteins
why is water fundamental
maintaining elasticity
blood supply of tendons
paratenon
mesotenon
musculotendonous junction
insertion site
normal strain at walk
2-4%
normal strain at trot
4-6%
normal strain at gallop
up to 16%
strain induced predilection sites
racing thoroughbred - SDFT in LF
elite- show jumpers - FL SDFT and DDFT injuries
elite eventers - FL SDFT injuries
dressage horses - HL suspensory lig injuries
trauma injury of ddft
signs and healing
toe flips up
healing good if injury is in MC/MT and not near the sheath insertion or in the sheath
trauma injury of sdft
cast
good prognosis
trauma injury of suspensory lig
fetlock drops
prox sesamoid bone drops
bad prognosis
non traumatic tendon injuries
tendintits/ tendinopathy
desmitis/ desmopthy
phases of non traumatic tendon and lig injuries
intratendinous haemorrhage
inflammatory reaction
reparative phase
remodelling phase
no regeneration
sdft region affected
mid metacarpal region
racehorses & jumpers
or in pastern region due to trauma & overreach
treatment of acute sdft injury
minimilise inflammation and proteolytic enymes
give steroids systemically
dont US too quickly
steroids and tendons
give systemically
into tendo = mineralization
intralesion = calcification
treatment of subacute sdft injury
fibroplastic
uc monitoring
regenerative therapies e.g. mesenchymal stem cell and protein rich plasma
treatment of chronic sdft injury
remodelling
us monitoring
controlled exercise
takes time - 6-12months
ddft location of injuries
metacarpal region - within sheath
pastern - down to insertion
poor prognosis
can have adhesion
limited healing ability
treatment of ddft injuries
mesenchymal stem cell therapy
indications of ddft MRI
if lameness cant be explained by diagnostic imaging
forelimb proximal suspensory desmitis
pain on plapation - on bone
difficult to palpate most proximal part
more lame on outside of circle
acute forelimb prox sus desmitis
reasonable prognosis
return to exercise in 3-4months
controlled exercise
chronic forelimb prox sus desmitis
guarded prognosis
hindlimb proximal suspensory desmopathy
no localising signs
lamer on outside of circle
often bilateral
degenerative
straight hock predisposes
treatment of HL prox sus demopthy
plantar neurectomy
fasciotomy
accessory lig of ddft
which limb
more common in forelimb
painful on palpation
acute cases of accessory lig of ddft
rest
cooling
intalesional treatment
regenerative laser
shockwave
chronic cases of acc lig of ddft
non responsive
desmotomy
hygroma
acquired injury to bursa
due to trauma
no pain, no communication
no lameness
calcaneal bursa
intertendinous or subtendinous
capped hock
navicular bursa
need mri to diagnose
podotrochlear apparatus
where does dfts begin and end
from distal 1/3 of MC/MT to hoof
function of sheath
surrounds spf and deep dig flexor tendons
whats dfts associated with
annular ligament
manica flexoria
primary tenosynovitis
low grade trauma
infectious
hyperextension
secondary tenosynovitis
ddf tendonitis
damage to manica flexoria and synovial layers
tearing of vincula
PAL injury
distension of dfts
palmar annular lig syndrome – trauma or fetlock over extension
chronic inflammation — adhesions, fibrosis
perpetating condition — inflammation, pressure, stenosis
