Fundamentals of PTA Week 1&2 Lecture Flashcards
What are the stages of trauma?
- Initial shock
- Denial: days to weeks
- Grief: mourning, self blame
- Anger: eternalizing blame, non compliance
- Resolution: acceptance
What is a linear motion?
Moves at same time, same direction and same distance (aka translatory)
- Rectilinear and Curvilinear
What is angular motion?
Moves at same time, same direction but not same distance (aka rotatory) e.g. knee extension while sitting on a chair
What is an example of combination of angular and linear movement?
Person on a skateboard
Synarthrosis -
Motion?
Structure?
Example?
Has a thin layer of fibrous periosteum between two bones.
Motion - No
Structure - Fibrous-suture joint
Example - Skull
Syndesmosis -
Motion?
Structure?
Example?
A fibrous joint that connects two adjacent bones with ligaments or a strong membrane.
Motion - Slight amount of twisting/stretching
Example - Distal tibiofibular joint (in the ankle) and distal radioulnar joint
Gomphosis
Motion?
Structure?
Example?
Motion - No
Structure - Fibrous peg in socket
Example - Between teeth and mandible
Amphiarthrosis
Motion?
Structure?
Example?
Has either hyaline or fibrocartilage
Motion - Little; bending/twisting; compression; provide stability
Structure - Cartilagenous
Example - Symphysis pubis, vertebral discs, ribs
Diarthrosis
Motion?
Structure?
Example?
Most common; further classified into movement and degrees of freedom
Motion - Free
Structure - Synovial
Example - Hip, elbow, knee
Kinetics vs kinematics
Kinetics- Forces and motion only and reveals how forces affect motion.
Kinematics- Motion only–or how an object moves through space–without reference to any associated force.
What is osteokinematics?
Joint motion.
Movement of bones around a joint axis; one bone moving on another
- Flexion and extension
- Abduction and adduction
- Lateral and medial rotation
E.g. Humerus moving on the scapula
What is arthrokinematics?
Joint surface motion
- Roll, spin, glide.
E.g. Humeral head’s movement within glenoid fossa of scapula
What are component movements?
Motions that accompany active motion but are not under voluntary control.
Superior is also called?
Cephalad
Inferior is also called?
Caudal
What do bones consist of?
- Organic and inorganic material
- Comprised of compact and cancellous
What are long bones?
Diaphysis with 2 epiphysis
E.g. femur, tibia
What are short bones?
Carpals, tarsals - usually articulate with more than one bone
What are flat bones?
Broad, thin surface
E.g. scapula, sternum, ilium
What are irregular bones?
Mixed shapes
E.g. vertebra, sacrum
What are sesamoid bones?
Patella, pisiform
What is diaphysis
Main shaft; center is medullary cavity
What is medullary canal
Hollow; decreases the weight of the bone
- Contains marrow and provides passage for nutrient arteries
What is endosteum
The membrane that lines the medullary canal
For bone resorption
What is osteoclasts responsible for?
Responsible for bone resorption
What is epiphysis
Each end of a long bone
- In adult, it is osseous; in children, it is cartilaginous (epiphyseal plate: manufactures new bone)
What is metaphysis
- Flared part at each end of the diaphysis
- Made up of cancellous (spongy) bone
- Functions to support the epiphysis
What is periosteum and its functions?
- Tough fibrous membrane covering all of the bone except the articular surfaces
- Contains nerve and blood vessels to provide nourishment, prompt growth and repair
Function:
- Nourishment
- Growth in diameter of immature bone
- Repair of the bone
- Attachment for tendons and ligaments
During flexion, what happens to the angle of body parts and the movement occurs in what plane and around what axis?
↓ Angle
Sagittal plane around the frontal axis
During extension, what happens to the angle of body parts and the movement occurs in what plane and around what axis?
↑ Angle
Sagittal plane around the frontal axis
Abduction/adduction occurs in what plane and around what axis?
Frontal plane around sagittal axis
ER and IR are what movements in what plane through what axis?
Lateral/medial movement
Transverse plane
Vertical axis
Thumb flexion/extension (thumb moving side to side; parallel to the palm) occurs in what plane and axis?
Frontal plane; sagittal axis
Thumb abduction/adduction (thumb moving up and down, perpendicular to the palm) occurs in what plane and axis?
Sagittal plane; frontal axis
What are the joint motions in sagittal plane around frontal axis?
Flexion/extension
What are the joint motions in frontal plane around sagittal axis?
Abduction/adduction
Radial/ulnar deviation
Eversion/inversion
What are the joint motions in transverse plane around vertical axis?
Medial/lateral rotation
Supination/pronation
Right/left rotation
Horizontal abduction/adduction
How many bones are in axial skeleton? What is their function?
80 of the skull, hyoid, vertebral, ribs, sternum, coccyx
- Support, protection, hemopoiesis
How many bones are in appendicular skeleton? What is their function?
126 bones of the extremities; clavicle, scapula, humerus, radius, ulna, carpals, mcps, phalanges, tarsals, mtps, pelvic girdle, femur, patella, tibia, fibula
- Locomotion
What is joint capsule in synovial joints made of?
fibrous cartilage
What does synovial membrane do and what does it secrete?
Lines joint capsules
Secretes synovial fluid
Synovial joint bone ends are covered in what?
Articulating cartilage aka cushions for bone surfaces
What are examples of plane/ gliding joint (a type of synovial joint)?
The joints between the metacarpal bones of the hand and those between the cuneiform bones of the foot.
Uniaxial
What are examples of sellar joint (aka saddle joint)?
The carpometacarpal joint at the base of the thumb
What are examples of hinge joint?
Knee, elbow
What are examples of pivot joint?
AA joint, proximal radioulnar joint
What are examples of condyloid joint (aka ellipsoid joint)?
MCP, MTP, AO joint, distal radiocarpal joint (wrist)
What are examples of ball and socket joint?
Glenohumeral, acetabular
What are characteristics of nonaxial joint?
- Linear movement
- Gliding motion
- Flat joint surface
- e.g. intercarpal
What are characteristics of uniaxial joint?
- 1 axis, 1 plane
- 1 degree of freedom
- Hinge or pivot
- e.g. Elbow and interphalangeal (fingers) joint