Soft Tissue Injury and Healing 3 Flashcards
soft tissue injuries accompanying fxs
periosteal injury
vascular injury
venous injury
arterial injury
nerve injuries
muscle, tendon and lig injuries
periosteal injury
periosteum forms a “sleeve” around the bone
it could tear and compromise blood supply to bone
what usually occurs w/ periosteal injuries
one side remains intact
creating a kind of “hinge” through which there is some physical support and blood supply
vascular injury is an
EMERGENCY
what happens w/ a vascular injury
bleeding and effusion gets trapped b/c they’re being contained by the fascial compartment
pressure builds up and ischemia occurs
what do vascular injuries cause
pain
contractures
severe nerve damage
ex of vascular injury
compartment syndrome = volkmann’s ischemia
what could a venous injury cause
thrombus
may become an embolus and lodge in heart. lungs and cause death
why could venous stasis occur
inactivity
paralysis
tight cast
arterial injury
not common
could occur d/t sudden and severe traction on artery
may develop persistent arterial spasm and create an occlusion
nerve injuries could occur d/t
fx sites
radial N
fx mid shaft or distal humerus
ulnar N
elbow dislocation w/ or w/o fx
common peroneal N
proximal fibula
L5/S1 nerve root
low lumbar/pelvic fxs
muscle, tendon and ligs
always involved in some ways
strain/sprain
how many stages of fx healing
3
3 stages of fx healing
inflammatory
reparative
remodeling
what does the length of each phase depend on
location/severity of fx
other associated injuries
pt’s age
bone healing
injured tissue has to deal w/ torsion, bendiing and compression forces
is bone healing different than soft tissue healing
yes
inflammatory phase of bone healing
w/in 1 week
fibroblasts begin laying down a network of collagen
reparative phase
fibrin strands w/in the clot become the framework for proliferating vessels –> chondroblasts produce fibrocartilage –> at first callus is soft and then infiltrated by osteoblasts –> eventually becomes bone
remodeling phase process
osteoblasts lay down new bone
osteoclasts remove and break down bone according to the forces placed on the healing bone
