Trauma & Orthopaedics Flashcards
(36 cards)
Compartment Syndrome - presentation
Pain out of proportion of injury Pain on passive stretch Paraesthesia Pale/pallor High pressures Paralysis
Compartment Syndrome - management
Management:
Initial
• Notify trauma/ortho team - reg/consultant input needed
• Removed external dressings or bandages
• Elevate limb above heart
• Maintain good pressure control - avoid hypotension
Definitive
• Emergency fasciotomy - cut down & release fascia & relieve pressure
○ Explore, debride & remove any necrotic tissue
○ Wound left open but dressed
○ Plastics input for repair & potential grafts
Necrotising fasciitis - definition & aetiology/risk factors
rapidly progressing soft tissue infection which spreads along fascial planes
when involves penis/scrotum = Fournier’s gangrene
caused by polymicrobial infection or group a strep
trauma (open fractures), diabetes, immunocompromised, malignancy, IVDU, abscesses, age >60 - older age increases risk
Necrotising fasciitis - clinical features
Pain - precedes by 24-48hrs
Stages:
○ Stage I - Erythema, tenderness, swelling and warmth.
○ Stage II - Bullae formation, blistering and fluctuation of the skin.
○ Stage III - Haemorrhagic bullae, crepitus and tissue necrosis.
Fever, shock, AKI
Necrotising fasciitis - management
Imaging
Resuscitation
Surgical exploration & radical debridement +/- amputation
Board spec IV abx
Osteomyelitis - definition & pathogenesis
infection/inflammation of bone
causative organisms - staph aureus or pseudomonas aeruginosa (IVDU)
PATHOGENESIS
Haematogenous spread- refers to the spread via the blood
Non-haematogenous - breakdown or removal of the normal protective barriers
Osteomyelitis - clinical presentation
fever, pain, local inflammation
erythema
swelling
Osteomyelitis - risk factors
open fractures ortho ops inc prostetics IVDU diabetes - diabetic foot ulcers immunosuppressed PVD
osteomyelitis - investigations
Bloods • FBC - high WCC • CRP/ESR - high • U&Es - due to abx therapy • LFTs • HbA1c - DM = risk factor Imaging • X-rays; often won't show early changes, MRI; gold std used for dx
Osteomyelitis - management
Management:
• Medical; 6 week abx therapy
• Surgical; debridement of infected bone/tissu
Cauda Equina Syndrome - definition & classes
Compression of cauda equina (L2/L3)
Early - pain
Incomplete - + urinary difficulties
Retention – as above with painless retention
CES - causes
Lumbar disc herniation (L5/S1 and L4/L5 level most common) Metastasis/malignancy Lumbar cord stenosis Trauma NTD Infection (abscesses)
CES - Clinical Features
- Lower back pain
- Unilateral or bilateral leg pain
- Paraesthesia in lower limbs
- Weakness in lower limbs
- Incontinence - bladder/bowels
- Loss of sensation in perianal region
- Urinary retention
On examination CES will have LMN signs
CES - Investigations
Bedside • Observations • Urinalysis • Full neurological examination • PR exam Bloods • FBC & CRP
Imaging
• Bladder scan - if retention suspected
• X-rays - AP, lateral
• Emergency MRI - gold std to r/o or dx CES
CES - Management
• Surgical emergency - neurosurgical opinion & input is needed urgently
○ Lumbar decompression surgery
Red flags for back pain
Trauma Unexplained W/L Neurological sex Age>50 Fever IVDU Steroid use History of Ca
Hip Fractures - types & classification
above INTERtrochanteric line = INTRAcapsular
below INTERtrochanteric line = extracapsular (includes trochanteric & subtrochanteric lines)
Garden’s (for intracapsular fractures)
- Type I; incomplete & non-displaced - Type II; completed but non-displaced - Type III; partial displacement - Type IV; fully displaced
Risk factors for hip fracture
Trauma - low E in elderly, high E in younger patients Age Osteoporosis Sex Steroid Use Low BMI Smoking Excess alcohol intake Metastatic spread of cancer to bone
Clinical Features of Hip Fracture
• Pain over area
• Pain in groin or hip, may radiate to knee
• Unable to weight bear
• Leg shortened & externally rotated
○ only present if significant displacement
• Limited ROM
• Swelling
Investigations in A&E - Hip Fracture
Hip fracture is a radiological diagnosis but wider investigations & assessment should always take place into why the patient has fallen
Bedside • Observations • Urinalysis - r/o infection • Examination/A to E • ECG - r/o cardiac cause
Bloods • FBC - Hb (important for surgery), WCC (signs of infection), Fe • U&Es - dehydration, electrolyte abnormalities • CRP • Clotting - surgery • Group & Save x 2 • Bone profile • Vitamin D
Imaging
• CXR: required pre-operatively.
• Plain films: XR pelvis, AP and lateral of affected hip. Full length views of the femur may be obtained, particularly if metastatic disease in the bone is suspected.
• MRI/CT: if plain films are inconclusive, to rule out occult fracture. MRI is gold-standard, CTs are generally more readily available
Management of Hip Fracture
Dependent on type of fracture i.e. intracapsular vs extracapsular, displaced vs non-displaced
Initial
• Any resuscitation needed e.g. fluids
• Analgesia
• Medication review - anticoagulants
Surgical management
• Intracapsular fractures - assess risk of AVN
○ Minimally or non-displaced fractures –> hip screws
○ Displaced fractures –> THR or hemiarthroplasty (choice depends on patient’s performance status)
• Extracapsular fractures
○ Intertrochanteric (bet greater & lesser trochanters) –> DHS
○ Subtrochanteric (within 5cm below lesser trochanter) –> IM nail
Open fractures - definition, classification & management
Any fracture complicated by one or more wounds
Classified using Gustilo Anderson Classification
Management: Initially resuscitate & stabilise Photographs Cover/dress/clean superficially Realign & splint Board spectrum antibiotics Tetanus vaccination Surgical repair & debridement
Red Flag Causes of Back Pain & Hallmark Symptoms
Spinal fracture (e.g., major trauma)
Cauda equina (e.g., saddle anaesthesia, urinary retention, incontinence or bilateral neurological signs)
Spinal stenosis (e.g., intermittent neurogenic claudication)
Ankylosing spondylitis (e.g., age under 40, gradual onset, morning stiffness or night-time pain)
Spinal infection (e.g., fever or a history of IV drug use)
Metastatic Spinal Cord Compression - Definition
Metastasis in spine causing compression of spinal cord above the cauda equina -
RADIOLOGICAL EVIDENCE OF INDENTATION OF THECAL SAC 2O TO CANCER