Fractures Flashcards
AABCS approach Xray
Adequacy Aligment Bone Cartilage Soft tissues
Things looking for when looking at cartilage on XR
Outline + orientation of joint
Joint space
Loose bodies
What is Lipohaemarthrosis
Fat + blood in effusion that has leaked from bone following trauma
Things looking for when looking at bone on XR
Check cortical outline on all bones
Check for any breach in outline
Bone texture - trabecular pattern
Hx fracture (6)
Mechanism Site Assoc injuries Joint sx NV status AMPLE Hx
Description of XR
Site Simple/multi-fragmented Displaced or non-dispalced Always describe according to position of distal bone Open or compound
Translation
Shifted sideways/forewards in relation to e/o
Alignement
Tilted or angulated, rotated
Simple types of fractures (4)
Transverse
Oblique
Spiral
Sagittal
Multi-fractures types (4)
Multidirectional
Multi-fragmented
Butterfly
Segmental
What is a Greenstick fracture
Paediatric fracture
= On 1 side that is bent on the other
What is a Salter Harris fracture
Fracture at the epiphyseal plate
What structures are in danger w/ a supracondylar # (2)
Median nn
Brachial aa
What is the criteria used for supracondylar #
Garland criteria
Looking for anterior humeral line
Is it in line w/ anterior 1/3 capitulum
CRITOE
What age parts of the elbow form Capitulum - 2 Radial head - 4 Int epicondyle (med) - 6 Trochlea - 8 Olecranon - 10 Ext epicondyle = 12
3 causes of pathological #
Osteoporotic #
Multiple myeloma
Benign bone lesion
What are the 4 stages of bone repair
Inflammation
Soft callus
Hard callus
Removelling
Inflammation stage of bone repair
1-7 days
# ends bleed
Haematoma forms
Inflammatory response - fibrin + capillaries
Soft callus formation bone repair
1-3 weeks Movement fracture end decr Vascular network expands Fibrous tissue replaces haematoma Subperiosteal new bone forms
Hard callus formation bone repair
1-4 m
Calcification soft tissue
Forms rigid tissue
Remodelling in bone repair
m-y
Once # solidly united
New bone replaced by lamellar bone
Acute complications of fractures (7)
Compartment syndrome Visceral injury Nn injury Vascular injury (Ps) Infection Rhabdomyolysis Bleeding
Who to suspect rhabdomyolysis in
All pt w/ crush injury
Immoblised pt
How to screen for rhabdomyolysis
CK
Why can rhabdomyolysis cause an AKI
Myoglobin = nephrotoxin
Late complications fracture (8)
Infection DVT/PE P sore Union issues AVN Joint instability OA Complex regional pain syndrome
RF - delayed union (7)
Local: poor blood supply Infection Poor apposition of bone ends FB Systemic: Poor nutritional status Smoking CCS therapy
CF - delayed union
Persisting tenderness
XR findings - delayed union
# line remains visible Decr callous formation
Mx delayed union (3)
Eliminate cause
Immboilise bone in plaster
Incr mm exercise
Def non-union
# wont ever unite w/o intervention Not healed after 2x expected time
PS non-union (2)
Movement elicited @ site
Pain decr due to pseudoarthritis
XR features hypertrophic non-union
Fracture ends = enlarged
XR features atrophic non-union
Ends tapered
No suggestion of new bone
Mx non-union
C = splinting S = rigid fixation +/- bone graft
What is malunion
Bones unit but in unsatisfactory position
I.e. rotation, angulation, shortening
WHy does mal-union occur?
D/c inadequate reduction
Or immobilisation
mx mal-union (3)
Re-manipulation
Osteotomy + internal fixation
Limb lengthening procedure if neces
What is compartment syndrome
Increased pressure within a closed anatomical space due to a post # or ischaemia reperfusion injury
2 areas compartment syndrome is most likely to occur?
Supracondylar #
Tibial shaft
How long does it take for death of mm to occur in compartment syndrome?
4-6hrs
PS Compartment syndrome (5)
WORST EVER PAIN not relieved by strong opioid. Passive + movement Parasethesia Pallor Pulses +/- Paralysis
How is a diagnosis of compartment syndrome made?
Measuring Intracompartmental P
>40 = diagnostic
Normal range intracompartmental P
5-10mmHg
Mx compartment syndrome
Remove cast
Elevate limb
ER Fasciotomy
Mx compartment syndrome if necrotic after faschiotomy
Debridement + amputation
Complication after fasciotomy?
Myoglobinuria
–> Renal failure
Mx myoglobuinuria post fasciotomy
aggressive fl therapy
Cause of Colles fracture
FOOSH
Who gets Colles fractures
Old women w/ OP
What are the 3 classical features of Colles #
Transverse # distal radius
Within 4cm of radiocarpal joint
Dorsal displacement + angulation
(Dinner fork deformity)
Which test can you do to determine if the median nn has been damaged in a Colles fracture?
Froments
Appearance of radius on XR in COlles Fracture
Shortened
Initial Mx Colles # (4)
Manipulate w/ Traction
Apply moulded plaster for reduction
Anaesthetise w/ haematoma block
Review 7 days + reimage
What position do you want to achieve on Colles fracture Mx
Ulnar deviation + flexion
Mx of Colles Fracture once in good position
XR @ 1/2 w
Mx unstable Colles #
ORIF + locking plate