Changes

Joints - Anatomy & Physiology (view source)

Revision as of 12:02, 18 July 2008

340 bytes removed , 12:02, 18 July 2008

→‎'''Synovial Joints'''

Line 47: Line 47:

**Encloses bone and muscle insertions within joint capsule

**Supplied by blood vessels and nerve endings

−

*Articular cartilage covers the articular surfaces

+

*Articular cartilage covers the articular surfaces [[Image:Normal joint cartilage.jpg|right|thumb|100px|<small><center>Normal joint cartilage (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]

**Usually, this is [[Bones and Cartilage - Anatomy & Physiology#Structure and Function of Cartilage|Hyaline]], although [[Bones and Cartilage - Anatomy & Physiology#Structure and Function of Cartilage|Fibrocartilage]] or fibrous tissue can substitute

−

~~[[Image:Normal joint cartilage.jpg|right|thumb|100px|<small><center>Normal joint cartilage (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]~~

**Articular cartilage is avascular and insensitive

***Nutrients via diffusion from synovial fluid and nearby vessels (adjoining tissue and marrow cavities)

*Some joints possess intracapsular '''discs''' or '''menisci''' to provide congruence and enable complicated movements

**Eg. Temperomandibular joint, paired menisci of the stifle joint

−

**Limited response to injury, Little repair capacity

−

*In large animals - normal bilaterally symmetrical depressions on the surface

−

*Obtains nutrition from [[Joints - normal#Synovial fluid|synovial fluid]] and less so from subchondral vessels

−

~~Microscopically, surface has depressions - for synovial fluid?~~

−

*In young animals overlies [[Bones - normal#Bone development|epiphyseal cartilage]]

==Links==

*[[Joints|Joint Pathology]]

Bepocock

1,351

edits