Classification Of Joint

 CLASSIFICATION OF JOINTS 

Classification of Joint


What is joint ?

Joint is a collection of one or more bones and cartilage.


– There are four types of joint :-


1. STRUCTURE CLASSIFICATION


2. FUNCTION CLASSIFICATION


3. REGIONAL CLASSIFICATION 


4. ACCORDING TO NUMBER OF ARTICULATING SURFACE


CLASSIFICATION OF JOINTS :-


1. STRUCTURE CLASSIFICATION :-


– Structural classification have three types


A. Suture

I) Skull type : skull

II) Syndesmosis : inferior tibiofibular joint

III) Gomphosis : tooth 


B. Cartilaginous Joint


I) Primary cartilaginous/synchondrosis :

  • 1st chondrocostal joint, 
  • joint between epiphysis and diaphysis, costochondral joint


II) Secondary cartilaginous/Symphysis : 

  • pubic symphysis
  • manubrio-sterni joint 
  • intravertrabral joint 


C) Synovial joint

Classification of Joint
Classification of Joint


I) Ball and socket/Speroidal  Joint : 

  • shoulder joint 
  • hip joint
  • talocalcaneonavicular joint
  • incudostapedial joint 


II) Saddle/Sellar Joint : 1st carpometacarpal joint

  • sternoclavicular joint
  • calcaneocuboidal 
  • joint between pattela and femur


III) Condylar/bicondaylar  Joint : 

  • knee joint
  • temporo-mandibular joint 


IV) Hing  Joint : 

  • elbow joint
  • ankle joint 
  • interphalangeal joint


V) Elipsoid Joint : 

  • wrist joint 
  • metacarpophalangeal joint
  • atlanto-occipital joint

 

VI) Pivot or trochoid Joint :

  • superior and inferior radioulnar joint


VII) Plan Joint : 


  • Intra carpal & tarsal joint
  • superior tibiofibular joint 
  • intra condylar joint
  • costo vertebral joint
  • tarsometa-tarsal joint
  • carpo-metacarpal joint 
  • inter metacarpal joint 
  • meta-tarsal joint 
  • sacroiliac joint 
  • all chondrosternal except 1st chondrosternal
  • crocothyroid joint 
  • cricoarytenoid joint 

2. Functional Classification :- 

=> There are Two Types of Functional Classification.

1. Synarthroses


=> Immovable Like Fibrous Joint
=> Example :- Suture

2. Amphiarthrosis


=> Slightly Movable, Like Cartilaginous Joint
=> Example :- Intravertrabl Joint

3. Diaarthroses


=> Freely Movable, like Synovial joint
=> Example :- All Synovial Joint


3. Regional Classification 


=> Three Types of Regional Classification
1. Skull type 
(immovable)

2. Vertebral type 
(Slightly Movable)

3. Limb type
(Freely Movable)

4. Classification by number of Articulating surface 


=> There are type of Classification by Number of Articulating surface

1. Simple Joint 


=> When two bone articulate
=> Example :- Interphalangeal Joint

2. Compound Joint


=> When more than two bone articulate
=> Example :- Elbow joint, Wrist Joint 

3. Complex Joint


=> When Cavity divided by articulating surface and meniscus
=>Example :- Temporomandibular Joint, Sternoclavicular Joint, Knee Joint

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