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Biomechanics
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Classication by structure:
Fibrous, cartilaginous, synovial
Classification by function
Synarthrosis
-Synarthrodial
Amphiarthrosis
-Amphiarthrodial
Diarthrosis
-Diarthrodial
Synarthrodial
Suture
:
-Cranial bones
- Immovable beyond infancy.
Gomphosis
-Sockets of teeth
-Conical Peg fits into socket
-Minimal or no movement
Amphiarthrodial
Slightly moveable joints.
-Syndesmosis- helf together by strong ligamentous structure that allow minimal movements between the bones.
- Inferior tibiofibular joint.
Amphiarthrodial
Symphysis
-Separated by fibrocartilage pad that allows slight movement.
-Symphysis pubis, intervertebral joints.
Synchondrosis
-Seperated by hyaline cartilage
-allows slight movement
-Costochondral joints.
Diarthrodial
Synovial/freely movable.
joint capsule surrounds ends of bone forming joint.
Synovial capsule lines joint capsule
Area inside joint capsule= joint cavity
Thickened portions of capsule= ligament.
Diarthrodial
Ligaments may be contained:
-Within the capsule iteself.
-Intraarticularaly ---> ACL
-Extraarticularaly ---> LCL
fibular collateral ligament.
Diarthrodial
Hyaline Cartilage
-helps protect ends of long bones. (Compressible and elastic)
-Relies on movement for feeding. (Works like a sponge)
Articular surface has low friction due to synovial fluit.
Diarthrodial
Some joint in this category have a fibrocarilage disk located between articular surfaces. (extra shock absorption.
-Meniscus
-Glenoid/acetabular labrum.
Arthrodial
Gliding/plane joint.
Two flat bony surfaces that butt against one antoher.
limitied gliding movement
Carpal joints
Condyloidal
Biaxial ball and socket.
Allows movement in two planes without rotation.
Radiocarpal joint.
Enarthrodial
Multiaxial ball and socket
movement in all planes
Shoulder and hip.
Ginglymus
hinge
wide range of movement in only one plane.
Elbow, ankle, knee
Sellar
Suddle
Thumbs only-Carpometacarpal joint
Permits ball and socket movement. - with exception of slight rotation.
Trochoidal
Pivot or screw joint
Rotation movement around long axis.
Radioulnar joint. -Rotation of radius
Author
Anonymous
ID
140141
Card Set
Biomechanics
Description
Midterm
Updated
2012-03-07T02:28:09Z
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