articulations. articulations (joints) articulations – wherever 2 bones meet classified by function...
TRANSCRIPT
![Page 1: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/1.jpg)
Articulations
![Page 2: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/2.jpg)
Articulations (Joints)• Articulations – wherever 2 bones meet
• Classified by function– Synarthrosis (Immovable)– Amphiarthrosis (slightly movable)– Diarthrosis - (synovial or freely movable
joints)
![Page 3: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/3.jpg)
Synathrosis (no movement)• Sutures
– Bones of the skull
• Gomphosis– Ligament bonds tooth w/in bony socket
![Page 4: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/4.jpg)
Amphiarthroses (Slightly Movable)• Fibrous joint connected
by ligament– Ex. Distal articulation
between tibia and fibula
• Symphysis– Bones joined by disk of
fibrocartilage– Ex. Vertebrae, between
pubic bones
• Cartilaginous– Connection between rib
and sternum
![Page 5: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/5.jpg)
Angular Movements of Diarthrotic Synovial Joints
– Angular Motion• Flexion – reduces
angle between articulating elements
• Extension - increases angle between articulating elements
• Adduction – moving towards midline
• Abduction – moving away from midline
• Circumduction – loop motion
![Page 6: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/6.jpg)
Rotational Movements of Diarthrotic Synovial Joints
• Rotational
![Page 7: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/7.jpg)
Special Movements
– Inversion- turns sole of foot inward (opp-eversion)
– Dorsiflexion- ankle flexion (plantar flexion pointed toe)
– Opposition – grasping (thumb/fingers toward hand)
– Protraction - move anterior across horizontal plane (opp retraction)
– Elevation – move superior (opp depression)
![Page 8: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/8.jpg)
Structural Classification of Synovial Joints
• Gliding – flat surfaces slide past one another– Ends of clavicles– Between carpals & tarsals– Between vertebrae
• Hinge – angular movement in a single direction– Occipital bone and atlas– Elbow, knee, ankle– Interphalangeal joints
• Pivot – permit rotation only– Atlas and axis– Proximal radius and ulna
• Ellipsodial – angular motion occurs in 2 planes– Radius w/proximal carpals– Phalanges w/metacarpals (and metatarsals)
• Saddle- permits angular motion but prevents rotation
– thumb• Ball and socket - round head rests within
depression– Shoulder and hips
![Page 9: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/9.jpg)
Double Jointed?
![Page 10: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/10.jpg)
Can you do this?
![Page 11: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/11.jpg)
![Page 12: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/12.jpg)
![Page 13: Articulations. Articulations (Joints) Articulations – wherever 2 bones meet Classified by function –Synarthrosis (Immovable) –Amphiarthrosis (slightly](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649cc05503460f949875d9/html5/thumbnails/13.jpg)