Difference between revisions of "Physeal Dysplasia with Slipped Capital Femoral Epiphysis"

From WikiVet English
Jump to navigation Jump to search
(Created page with "*Slipped capital femoral epiphysis seen in dogs, foals and calves *Associated with severe trauma *Pigs – manifestation of [[Joints Developmental - Pathology#Osteochondrosis|os...")
(One intermediate revision by the same user not shown)
Line 4: Line 4:
 
*Most common type of physeal fracture in small animals and the proximal femur is the most common site
 
*Most common type of physeal fracture in small animals and the proximal femur is the most common site
 
*In horses, physeal dysplasia is synonymus with [[Physitis|physitis]]
 
*In horses, physeal dysplasia is synonymus with [[Physitis|physitis]]
−
 
+
*[[More about Physeal dysplasia]]
−
 
 
−
'''More about Physeal dysplasia'''
 
−
 
 
−
 
 
−
*Also seen in the coypu with minimal trauma
 
−
*Femoral head physes contribute 30-40% of longitudinal growth of the femur in small animals
 
−
*Slipped epiphysis -> Salter-Harris type I where only the physis is involved
 
−
**Most common type of physeal fracture in small animals and the proximal femur is the most common site
 
−
**In traumatic cases, the fracture crosses through mutiple zones of the physis, with chondrocytes maintaining their linear arrangement on both sides of the fracture site for 1-4d following trauma
 
−
*Slipped capital femoral epiphysis – seen in humans, mainly adolescent boys, autosominal dominant with variable penetrance
 
−
 
 
−
 
 
−
In cats:
 
−
*'''[Physeal dysplasia with slipped capital femoral epiphysis in 13 cats. Craig LE. Vet Path (2001) 38 92-7]'''
 
−
**Age 12-21months
 
−
**90%  males
 
−
**Often obese, lots of Siamese cats
 
−
**Normal growth plates close at 7-9mths so these physes should have been closed
 
−
**Histology – physeal dysplasia with persistence of an open, disorganized growth plate
 
−
***Wide physis, necrotic cartilage at the cleavage site
 
−
***Irregular clusters of chondrocytes separated by abundant chondroid matrix. Similar lesions in femoral neck.
 
−
**No necrosis of the femoral head, although there is usually a small areas of peripheral attachment at the perichondral fibrocartilagenous complex – could provide some vacularization **The ligamentum teres provides no blood supply to the femoral head
 
−
**Clusters of chondrocytes present on either side of the cleavage site
 
−
**Differs from [[Joints Developmental - Pathology#Osteochondrosis|osteochondrosis]] by:
 
−
***More diffuse affecting the whole physis (in OC – focal failure of endochondral ossification)
 
−
***Chondrocytes are arranged in disorganized clusters rather than parallel rows
 
−
***The cat breeds have not been selected for rapid growth
 
−
**Insulin may have a role to play – most of the cats were obese....Similar deal to horse osteochondrosis
 
−
 
 
−
 
 
  
 
[[Category:Bones - Degenerative Pathology]]
 
[[Category:Bones - Degenerative Pathology]]

Revision as of 12:01, 3 March 2011

  • Slipped capital femoral epiphysis seen in dogs, foals and calves
  • Associated with severe trauma
  • Pigs – manifestation of osteochondrosis with only minimal trauma required
  • Most common type of physeal fracture in small animals and the proximal femur is the most common site
  • In horses, physeal dysplasia is synonymus with physitis
  • More about Physeal dysplasia
Retrieved from "https://en.wikivet.net/index.php?title=Physeal_Dysplasia_with_Slipped_Capital_Femoral_Epiphysis&oldid=109906"