06 - musculoskeletal system disease Flashcards
(musculoskeletal system disease)
(digital)
- lameness is common on dairy farms
- usually present on what limbs?
- many hoof diseases have multifactorial causes
- hindlimbs
(musculoskeletal system disease)
(digital)
(skin disease)
(footrot)
- opportunistic infection with what?
- usually due to what?
- fusobacterium necrophorum
- poor environmental conditions (wet/mdduy) (skin immunocompromise or pathogen buildup)
(any conditions that lead to abrasion between claws increase risk of foot rot)
(musculoskeletal system disease)
(digital)
(skin disease)
(footrot)
- tx with what?
- parenteral procaine penicillin G, ceftiofur, or oxytetracycline
(musculoskeletal system disease)
(digital)
(skin disease)
(hairy heel warts)
- aka what?
- caused by what?
- where located?
- look how?
- tx?
- is it contagious?
- digital dermatitis, papillomatous digital dermatitis
- trepemona (bacterial, not viral)
- interdigitial skin at heel usually
- papillomatous, red when cleaned
- respond well to oxytetracycline (topical or parenteral)
- yep
(musculoskeletal system disease)
(digital)
(skin disease)
(interdigital fibroma)
- a mass of connective tissue that grows in the interdigital space
- thought to be associated with what?
- usually subclinical, but can cause lameness
- tx?
- chronic inflammation
- excision
(musculoskeletal system disease)
(digital)
(hoof disease)
(laminitis)
- rarely presents like horse with acute multi limb lameness
- usually see with what cattle?
- feedlot cattle on high energy rations
or following severe/acute bac infections in another organ system
(musculoskeletal system disease)
(digital)
(hoof disease)
(laminitis)
- cause is multifactorial
- what are four causes?
- subacute rumen acidosis
toxemia (eg matitis)
environmental (impact trauma)
misshapen hooves (cause or effect of laminitis)
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole abscess)
- variable separation of what?
- which on exploration tracks to what?
- white line
- presurrized pocket of purulent material (usually)
can also just have a pocket, have a draining tract goning somewhere, etc
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole abscess)
- cause is multifactorial
- four causes?
- misshapen hooves
subclinical laminitis
physical trauma
physical horn changes (eg maceration, bacterial decay)
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole abscess)
- tx?
- prog?
- drainage, protetcion of exposed corium by applying supportive block elevation to contralateral sound claw
parenteral abx if corium is infected
- mostly excellent
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole ulcer)
- aka what?
- pathognomonic location - where?
- Rusterholtz ulcer
- corium covering flexor tuberosity of distal phalanx
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole ulcer)
- multifactorial cause
- what are 3?
- subclin laminitis (pedal rotation)
- misshapen hooves (^ pressure on heel)
- lack of cushion on walking surface
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole ulcer)
- tx?
- prog?
- horn removal around ulcer, exposure, removal of granulation bed, application of supportive block to sound contralateral claw
- guarded for recovery, good for imporovement
(musculoskeletal system disease)
(digital)
(hoof disease)
(sole ulcer)
- complications?
- deep digital flexor tenosynovitis and osteomyelitis
(musculoskeletal system disease)
(upper limb)
(hip luxation)
- common after what in adult cows?
- tx?
- prog?
- adductor muscle
- manual reduction under heavy sedation or anesthesia preferably
- grave; poor if reduced within several hours