PRINCIPLES OF DIAGNOSIS AND MANAGEMENT OF FRACTURES AND SOFT TISSUE INJURIES Flashcards
in what situation should you attempt a manipulation/reduction before radiographic studies?
if there is a risk of neurovascular damage or haemodynamic instability
what is a fracture?
a break in the continuity of bone or cartilage
what is the common clinical presentation of a fracture/
loss of function pain tenderness swelling abnormal motion visible deformity in the area
what are some ways in which we describe fractures?
open vs closed exact anatomical location orientation of fracture line simple or comminuted position complete vs incomplete involvement of articular surface avulsion impaction pathologic? stress?
whats the difference between an open and a closed fracture?
in a closed fracture the skin and soft tissue overlying the site is intact but in an open fracture there is exposure to the outside environment
how do we describe the orinentation of the fracture line?
spiral
oblique (on an angle)
transverse
comminuted (more than 2 pieces)
note: you describe the fragmented pieces relative to their normal position
how do we describe position of a fracture?
displacement is when the fragments are deviated away from their normal position
alignement refers to the relationship of the longitudinal axis of one fragment to another - deviation from normal alignment is angulation
whats the difference between complete and incomplete fractures?
a fracture is termed complete if it interrupts both cortices of the bone and incomplete if it only interrupts 1
what is an inter-articular fracture?
a fracture that crosses the joint surface
what is an avulsion fracture?
when a small chunk of bone attached to a tendon or ligament gets pulled away from the main part of the bone
what is a pathologic fracture?
when a fracture occurs from a seemingly trivial trauma so it is liely that a disease has caused a structural weakness predisposing them to an injury e.g. osteomalacia or scurvy etc
what are stress fractures?
tiny cracks in the bones caused by repeated low intensity forces e.g. running long distances
outline the stages of fracture healing
- haematoma caused by the rupturing of vessels across the fracture line
- inflammation when granulation tissue forms
- resoprtion of haematoma and pro-callus formation (fibrocartilage)
- remodelling to form callus due to mineralisation by calcium phosphate deposits
- callus is resorbed
in which types of bones may there not be any callus formation?
bones that have deficient periosteum e,g, skull and neck of femur
in a healthy adult, how long from injury should it take for consolidation?
2 months on bone slike the hmerus and 4 months on larger bones i.e. femur
what affects the rate of fracture healing?
what affects the rate of fracture healing?
type of fracture (e.g. oblique fractures heal faster than transverse)
age- faster in younger ages
type of bone affected
degree of fracture
systematic states e.g. hyperthyroidism or corticosteroidism
exercise vs chronic hypoxia
what is delayed union?
when fracture healing takes longer than usual for that particular location
what is malunion?
when a residual deformity exists
what is nonunion?
failure of the fracture to unify - can result in pseudoarthroses