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Articulations in the Human Body

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cwilliford's version from 2016-11-14 15:26

Functional and Structural Classification

Functional classification is based off of movement while structural classification is based on the presence of connective tissue fiber, cartilage or a joint cavity.

 

Question Answer
Define Synathroticlittle or no movement
Define Amphitroticsome movement
Define Diathroticcapable of moving freely
Define Fibrousbones are joined by fibrous tissue, most are synathrotic but some are slightly moveable
Define Cartilaginousarticulating bone ends are joined by a broad, flat disc of cartilage; most are ampthrotic
Define Synovialarticulating bone ends are separated by a joint cavity, all are diathrotic
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Examples

 

Question Answer
Synathrotic Fibroussutures and gomphosis (tooth and mandible)
Synathrotic Cartilaginoussynchondrosis (Rib 1 and sternum)
Amphithrotic FibrousSyndemoses (tibia and fibula)
Amphithrotic CartilaginousSymphysis (pubic symphysis)
Diarthrotic Uniaxialhinge (elbow, knee, ankle), pivot (C1/C2)
Diarthrotic Biaxialsaddle (thumb), condylar (wrist and knuckles)
Diarthrotic Multiaxialball & socket (hip and shoulder)
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Types of Synovial Joints and Their Movement Planes

 

Question Answer
Hingeflexion/extension
Pivotrotation
Saddleflexion/extension, abduction/adduction
Condylarflexion/extension, abduction/adduction
Ball & Socketflexion/extension, abduction/adduction, rotation
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Types of Joints

 

Question Answer
Symphysis Examplepubic symphysis
Synchondrosis Example1st rib and sternum
Suture examplelambdoid suture
Hinge exampleelbow, knee
Pivot exampleC1/C2
Saddle examplethumb
Condylar exampleknuckles
Ball & Socket Examplehip or shoulder
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Question Answer
Symphysis ClassificationAmphithrotic Cartilaginous
Synchondrosis ClassificationSynathrotic Cartilaginous
Suture ClassificationSynathrotic Fibrous
Hinge ClassificationUniaxial Synovial, Diathrotic
Pivot ClassificationUniaxial Synovial, Diathrotic
Saddle ClassificationBiaxial Synovial, Diathrotic
Condylar ClassificationBiaxial Synovial, Diathrotic
Ball & Socket ClassificationMultiaxial Synovial, Diathrotic
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