Funtional Classification Flashcards
Synarthrotic
Immovable joint
Amphiarthrotic
Slightly movable
Diarthroric
Freely movable
Synathrosis
- Tough edges or interlock
- May fuse over time
4 types of Synarthrosis
Suture - in the skull
Gomphosis - binds teeth in sockets
Synchondrosis - epiphysis, ribs to sternum
Synostosis - fused epiphysis
Amphiarthrosis
- Slightly moveable
2 types of Amphiarthrosis
- Syndesmosis - ligamentous connection; connection between tibia and fibula
- Symphysis - pubic symphysis
Diarthrosis
- Freely movable
- Synovial joints
- At the ends of long bones
- Articulates capsules
- Articulates cartilage = hyaline cartilage
Synovial Fluid
- Provides lubrication
- Shock absorbing
- Nutrient transport
Accessory structures of a synovial joint
Meniscus, fat pads, ligaments, tendons, bursae
Meniscus
Fibrocartilage
Fat pads
Superficial to capsule
Where are tendons in the synovial joint?
Pass around it
Bursae
Pockets of synovial fluid (provides protection to the bone)
Luxation
Complete displacement of a joint
Subluxation
Partial displacement of a joint
What are the 3 types of movements at synovial joints?
- Gliding
- Angular motion
- Rotation
What is gliding?
Linear movement; carpal and tarsal bones
What are the 6 types of angular motion?
- Flexion
- Extension
- Hyperextension
- Abduction
- Adduction
- Circumduction
What are the 4 types of rotating motion?
Medial, lateral, pronation, and supination
Flexion
Reduces angle
Extension
Increases angle
Abduction
Moves away
Adduction
Moves toward
Circumduction
Circular, no rotation
What are the unique movements?
Inversion, eversion, dorsiflexion, planter flexion
Inversion
Twist soles of foot medially
Eversion
Twists soles laterally
Dorsiflexion
Lift toes
Plantar flexion
Point toes
Opposition
Thumb
Protraction vs retraction
Jaw excursion
Elevation vs depression
Shurg shoulders, open mouth
Lateral flexion
Spine
Hinge joint
Single plane
What are examples of a hinge joint?
Elbow, knee, ankle
Pivot joint
Rotation only
What is an example of a pivot joint?
Atlas-axis joint
Saddle joint
Biaxial
What is an example of a saddle joint?
Thumb
Ellipsoid joint
Biaxial
What is an example of a ellipsoid joint?
Radiocarpal joint
Ball and socket joint
Round articular faces
What are examples of b & s joints?
Hip and shoulder
What is a glenohumeral joint?
Shoulder
What kind of joint is the elbow?
Humeroradial joint
How is the elbow supported?
Supported by biceps, brachii, tendon, and elbow ligaments
Flex
Bend forward
Extend
Bends backwards
Vertebral joints
Gliding joints between inferior and superior articular processes
What joints are found in the vertebral joints?
Symphyseal joints (between the bodies) - IV discs
What kind of hinge is the knee?
Complicated hinge
What articulations are found in the knee?
2 articulations of the femur and tibia, 1 femoropatellar articulation
How many ligaments are found in the knee?
7
What does the medial and lateral meniscus do to the knee?
Locks knees
What are the ligaments of the knee?
PCL, ACL, MCL, and LCL
What does the PCL stand for?
Posterior cruciate ligament
What does MCL stand for?
Medial collateral ligament
What does LCL stand for?
Lateral collateral ligament
What does ACL stand for?
Anterior cruciate ligament
Gomphosis
Fibrous mobile peg-and-socket joint
Metacarpohalangeal joint (MCP)
Proper term for knuckle