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86 Cards in this Set

  • Front
  • Back

Functions of skeletal system

•Support & shape for body •Protects vital organs •Assists in movement •Manufacture blood cells •Stores calcium & other minerals

structure of bone


Ccedmep

•Compact bone (hard thick bone) •Cancellous bone (spongy more hollow) •Epiphysis (widened area at the end of long bones) •Diaphysis (main shaft of the bone) •Medullary canal (inner lining of the diaphysis) •Endosteum


•Periosteum (both vascularized and innervated)-great blood supply (heals quickly)


-serves as an attachment sight for tendons

Types of Bones

•Long-only in appendicular skeleton •Short-(more cubed like. Tarsals and carpals) •Flat-generally curved. Broad and thin. serve in protection (ribs, skull) Broad flat areas for muscle attachments •Irregular -nonirregular bones in appendicular skeleton •Sesamoid (petalla, pisiform) incased within a tendon -protect tendon -give them mechanical adv.

•Joint: connection between 2 bones


functions?

•ALLOW MOTION •Bear weight •Provide stability

Axialskeleton (80 bones)


•Head •Thorax •Trunk

•Appendicularskeleton (126 bones)


•Extremities

Fibrous

•Synarthrosis •Syndesmosis •Gomphosis

Synarthrosis (suture)

•Fibrous periosteum between bones


•Sutures of skull

Syndesmosis (ligamentous)

•Fibrous stability


•Interosseous membranes


•Distal tibiofibular joint

Gomphosis

•Between tooth & dental socket in maxilla & mandible

Cartilaginous/ Ampiarthrodial

-Hyaline or fibrocartilage between two bones


-Small degree of motion & compression allowed


-Very stable

Synovial / Diarthrodial

•No direct union between bony ends


•Cavity/ capsule filled with synovial fluid


•Articulating ends of bones covered with hyaline or articular cartilage


•Limited stability but allows free motion

Plane joint (nonaxial)

•Motion is linear


•Flat joint surfaces


•Motion occurs secondary to other motions


•Carpal & tarsal bones

Hinge joint (uniaxial)

•Motionoccurs in one plane & around one axis


•Humeroulnar joint, IP joints


•*Knee not a true hinge*

Pivot joint (uniaxial)

•Pivot motions occur in the transverse plane


•Proximal radioulnar joint & atlantoaxial joint (c1, c2)

Condyloid Joint (biaxial)

•Motion occurs in two different directions


•Wrist& MCPs

Saddle Joint (biaxial)

•Bones fit together like horse back rider in a saddle


•Allows motion in two directions +


•CMC of the thumb

Ball & Socket Joint (triaxial)

•Allowsmotion to occur actively in all three planes (Hip & GHJ)

Joint Structure

•Articulating bones (shape will dictate amount of mobility / stability)


•Ligaments(limit excessive movement)

Capsule (surrounds joint)

•Outer fibrous layer reinforced by ligaments


•Inner layer lined with synovial


membrane(lubrication of the joint)

Cartilage

dense,fibrous connective tissue which can withstand compression or tension

Hyaline / articular

covers bone ends

Fibrocartilage

shock absorber / force distributer (knee,lubrum, hip, intervertebral disc)

Elastic cartilage

maintain structures shape (external ear, larynx)

Sagittal Plane

•Divides body into right & left halves


•Flexion & extension


•Medial lateral axis

Frontal/Coronal Plane

•Divides body into anterior & posterior sections


•Abduction & Adduction


•Anterior to posterior axis

•Transverse/ Horizontal Plane

•Divides body into top & bottom


•Rotation


•Longitudinalaxis

Axes of Motion

Points that run through the center of a joint around which a part rotates

Frontal plane =

Sagittal axis


ANTERIOR-POSTERIOR AXIS

Sagittal plane =

Frontal axis


MEDIAL-LATERAL AXIS

Transverse plane =

Vertical /longitudinal axis


VERTICAL AXIS

POSTURE

VertebralColumn (loookkkk doowwnnnnnnnnnn) wooooooottttttt




i should prob go to bedd....

Cervical& lumbar curves = lordosis

-Convex anteriorly


-Concave posteriorly

Thoracic& sacral curves = kyphosis

-Concave anteriorly


-Convex posteriorly

where is COG located?????????????????????????

just anterior to S2

Curvedspine 10x more shock absorptive than straight / vertical column

neutral pelvic tilt

ASIS & PSIS are level in thetransverse plane or . . . ASIS oriented ~10 degrees below PSIS in transverseplane

R & L ilium symmetrical


what if asymmetrical????????



lateral pelvic tilt

Anterior Pelvic Tilt

-ASIS move inferiorly relative toPSIS


-Increased lumbar lordosis


-CKC hip flexion


-Caused by trunk extensors and hipflexors

PosteriorPelvic Tilt

-ASIS move superiorly relative toPSIS


-Decreased lumbar lordosis(flattening)


-CKC hip extension


-Caused by trunk flexors and hipextensors

Force Couples

A couple is created by two parallel forces equal in magnitude and opposite in direction

Anterior Force Couple: Hip Flexors (psoas, iliacus, rectus femoris, and TFL), and the spinal erectors.

From the front, the hip flexors pull the pelvis down into anterior tilt. On the back side, the spinal erectors are pulling up on the back side of the pelvis to produce anterior tilt.These muscle groups work synergistically to produce one movement -AnteriorPelvic Tilt.

Posterior Force Couple

From the front, the rectus abdominus and external obliques pull upon the pelvis. From the back side, the gluteals and hamstrings pull down on the pelvis.

By knowing how Force Couples work and which ones are affecting you, we can?

improve the position of the hips, and therefore improve the alignment of your entire body.




*Better alignment equals fewer injuries, optimal muscle recruitment, and better performance*

Primary antigravity muscles:

Hip extensors


Knee extensors


Trunk/ neck extensors

Secondary antigravity muscles:

Trunk/ neck flexors & lateral flexors


Hipabductors / adductors


Anklemusculature

Postural Sway

Anterior-posterior motion of the upright body (~4cm)


Secondary to constant displacement and correction of COG within BOS


Controlled by ankle plantar & dorsiflexors

Assessing Posture Plumb Line: Lateral View

-Through the earlobe


-Through the tip of the acromion process


-Anterior to the thoracic vertebral bodies


-Through the lumbar vertebral bodies


-Through the greater trochanter


-Slightly posterior to the patella


-Slightly anterior to the lateral malleolus

Assessing Posture Plumb Line: Anterior View

-Head neutral & level


-Shoulders level & neither elevated nor depressed


-Sternum centered at midline


-ASIS level


-Legs slightly apart


-Knees neutral


-Feet with normal arches & slightly toed out

Assessing Posture Plumb Line: Posterior View

-Head neutral (extended) & level


-Shoulders neither elevated nor depressed


-Spinous processes centered at midline


-PSIS level


-Legs slightly apart


-Knees neutral


-Calcaneus straight

Postural Deviations

-Scoliosis


-Handedness Posture


-Excessive Lordosis


-Excessive Kyphosis


-Flat-Back Posture


-Genu Recurvatum


-GenuVarum


-GenuValgum


-PronatedFeet


-SupinatedFeet


-Hallux Valgus

Scoliosis

lateral curvature of the spine (lateral flexion and rotational deformity)

Structural scoliosis

irreversible lateral curvature with fixed rotation of the vertebrae

Non structural scoliosis

functional or postural scoliosis: reversible curvature which can be corrected

C-Curve

shoulder low on side of high hip

S-Curve

shoulder high on side of high hip

Rib hump noted in thoracic spine during

forward bending / flexion (ribs rotate along with vertebrae)

Handedness Posture

Dominant hand side shoulder slightly lower than contralateral shoulder


-Adducted Scapulae


-Lateral Pelvic Tilt


-Some Pronation at the Foot

Excessive Kyphosis

Compression fractures in the thoracicvertebral bodies are common in people with osteoporosis = Dowager’sHump

Excessive Lordosis


-ASIS should be between 0-10 degrees below PSIS in transverse plane


-Anterior pelvic tilt


-CKC hip flexion


-Increased lumbar lordosis


-Increased lumbosacral angle

Flat-Back Posture

-Posterior pelvic tilt


-CKC hip extension


-Decreaseof the normal lumbar lordosis


-Decreased lumbosacral angle

Genu Recurvatum

-“Backknees”


-Hyperextension of the knees


-ROM at tibiofemoral (knee) joint goes beyond 0 degrees of extension

Genu Varum

-“Bowlegs”


-Alignment of LE in which the distalsegments (feet) are positioned more medially than normal -Ankles touch while knees remain apart -“Rickets”in severe form

Genu Valgum

-“Knockknees”


-Alignment of LE in which the distalsegments (feet) are positioned more laterally than normal (more than a few cm)


-Knees touch while ankles remain apart

Pronated feet

-Look at calcaneus to be turned out (everted)


-Flattening of longitudinal arch

Supinated Feet

-Look at calcaneus to be turned in (inverted)


-High arches with WB chiefly on lateral aspect of feet

Hallux Valgus

-“Bunion”


-Deviation of big toe toward the midline of the foot (adduction at MTP)


-Frequently associated with bunion or callus near MTP joint

Treatment

-Properly identify impairments


-Mobility before strengthening (Dr. Vladimir Janda)


-Mobility


-Flexibility


-Activate & strengthen weak areas


-Body mechanics & dynamic posture -


-Ergonomic assessment

Nervous

central nervous system (process, interprets, and stores information, issues orders to muscles, organs, and glands)

brain and spinal cord (bridge between brain and and peripheral nerves)

peripheral nervous system (transmits info to and from CNS)

somatic nervous- controls skeletal muscles


autonomic nervous (regulates glands, blood, vessels, and internal organs)


branches into sympathetic (fight or flight) and parasympathetic (homeostasis)

Functions of the Nervous System

Enables the body to react to continuous changes in its external and internal environment.


-Controls and integrates various activities of thebody: *Circulation *Respiration


-Composed of Neurons (nerve cells) and Neuroglia (non-neuronal, non-excitable glial cells)

Dendrites

receive impulses and carry to the cell body

axons

transmit impulses away from the cell body

Myelin sheath

increases the velocity of the impulse conduction.

Node of Ranvier (electrical activity is generated here)

Myelin is interrupted every half millimeter this break is the node of ranvier

frontal lobe

conscious thought and movement

pareital lobe

sensations of temp, touch, pressure, pain from skin

occipital lobe

vision

temporal lobe

hearing and smelling

Thalamus

Body Sensations


Pain Perception


Relay station for sensation

Hypothalamus

Hormones


Behavior

Basal Ganglia

coordination and movement

Midbrain

visual reflexes

Pons

bridge

Medulla Oblongata

Respiration


Heart Rate
Most cranial nerves come from this area