Midterm 1 Flashcards
what is a fracture?
-structural separation in the continuity of bone, epiphyseal plate, or cartilaginous joint surface
what are the signs and symptoms of fracture? KNOW
-localized pain increasing with movement
-muscle guarding with passive movement
-pain with weight bearing
-cannot weight bear
-decreased function of body part
-unwilling to move
-swelling
-deformity
-abnormal movement
-sharp specific pain
-crepitus
what are risk factors for fractures? KNOW
-high energy trauma or sudden impact
-osteoporosis
-history of falls
what are examples of high energy trauma or sudden impact?
-MVA
-abuse
-fall from height
what populations have increased history of falls?
-older age
-low BMI
-low PA
what can fractures in the center of the body result in?
-damage to internal organs, spinal cord, or brain
what are some examples of soft tissue involvment in fractures?
-fracture blister
-adherent scar
what fractures result from bending/angulatory force?
-transverse and oblique
-greenstick in children
-fx is on convex side
what fracture results from twisting/torsional force??
-spiral
what fracture results from a pull/traction force?
-avulsion
-tension failure from pull of ligament or muscle
what fracture results from a crushing/compression force?
-compression, burst
-torus in children
what fracture results from repetitive microtrauma force?
-fatigue, stress
-small crack
what fracture results from normal force on abnormal bone?
-pathological fracture
-due to osteoporsis, tumor, or other disease
what are the 6 ways a fracture will be described?
-site
-extent
-configuration/pattern
-relationship of fragments
-relationship to environment
-complications
how is position of fragments described in fracture?
-how the distal segment relates to the proximal fragment
-ex: nondisplaced, medial, distracted, rotated laterally
what is a comminuted fracture?
-more than 2 fragments
what is cortical bone?
-compact bone
-outer layer of long bone
what are the healing phases of cortical bone?
-inflamation phase
-reparative phase
-remodeling phase
what is the stage of clinical union?
-fx firm enough that is doesnt move
-motion of limb permissble but CAREFUL not to stress site
what is the stage of radiological union?
-fracture callus replaced by mature bone
-bone is healed
what type of bone heals faster?
-cancellous/spongy bone
what can epiphyseal plate fractures lead to?
-growth disturbances
-bone deformity
what is a stress sharing device?
-permits some transmission of load across fracture site
-casts, rods, pins, wires
what is a stress shielding device?
-protects the fracture completely from mechanical stress
-transfers stress to fixation device
-plate, external fixators