Cartilage Development Flashcards
What is hyaline cartilage?
Complex matrix of:
collagen, proteoglycans and water
That provide and interface between bones and synovial joints
Resists compressive forces
What injury to the physis curing development result in?
Temporary or permanent arrest of growth, leading to bone shortening or deformity
What is osteochondrosis?
A group of conditions of developing cartilage and its supporting bone:
- osteocondritis dissecans
- subchondral bone cysts
- peri-articular fragmentation/fracture
What is osteochondritis dissecans?
Detachment of a chondral or osteochondral fragment from the articular surface
Detached piece can lead to secondary OA
What is peri-articular fragmentation/fracture?
Detachment of a chondral or osteochondral fragment from the peri-articular area
ex: fracture of the medial coronoid procress of the canine elbow
What is a subchrondral bone cyst?
When cartilage and bone is lost and bone regrows around the cartilage, resulting in an encased piece of cartilage
What is the pathophysiology of osteochondrosis?
Vascular problems in the epiphysis leads to failure of normal cartilage to bone succession
This can lead to an area that should be bone remaining as cartilage (can lead to subchondral bone cyst)
What is the signalment and clinical signs of osteochondrosis?
Signalment Fast growing, high performinc animals Dogs: pure breeds Pigs: landrace Broiler chickens
CSs: Variable lameness Joint effusion Often bilateral Pain on manipulation of joint Exercise intolerance
How is osteochondrosis treated?
Symptomatic
Surgical
Prognosis varibale
What causes osteoarthritis in animals?
Occurs secondary to predisposing disease (i.e. osteochondrosis)
- direct cartilage damage
- fragmentation
- mechanical incompentence
Where is OCD usually present in the canine?
Elbow, shoulder, stifle or tarsus
Where is OCD usually present in the horse?
Stifle, tarsus, MCP, PIP, DIP
Where is OCD usually present in the pig?
Hips
Where is OCD usually present in the broiler chicken?
Stifle
