Orthopaedics Flashcards
What is used to assess fracture risk
FRAX tool
What is squaring of thumbs seen in
OA
Presentation of a prolapsed disc
Back pain worse on sitting
Leg pain worse than back pain
Associated relevant sensory and motor deficit
Management of prolapsed disc
1st line- physio, exercise, NSAID with PPI
If no response after 6 weeks do MRI
What predisposes people to tendon problems
High cholesterol forming tendon xanthomata
Quinolones
Eccentric vs concentric movements
Eccentric lengthens a joint like elbow extension
Concentric shortens like elbow flexion
Presentation of achilles tendonitis
Pain in heel worse after exercise
Like in inflammatory disorders
- morning pain and stiffness
Achilles tendonitis management
Supportive
- analgesia
- physio if persists beyond 7 days
Presentation of Achilles heel rupture
Feel pop when playing sport
Debilitating pain in heel/calf-
Examination findings of achilles rupture
Simmonds positive
Greater dorsiflexion of that foot
First line imaging for suspected achilles rupture
USS
Management of achilles rupture
Ortho referral immediately
Management of ganglion cyst
Will resolve in a few months
Surgery if severe sx or neurovascular compromise
Presentation of ganglion cyst
Lump on dorsal aspect of wrist
Firm and transilluminates
More common in women
Examination finding of ganglion cyst
Firm and transilluminable cyst most commonly
What is a ganglion
Cyst arising from tendon
What exercises used for achilles tendonitis
Eccentric stretching of achilles
What do if achilles tendonitis fails to respond to analgesia
If no improvement after 7 days refer for physio
What is phalens sign
Carpal tunnel sx worsened by flexion of wrist
What is tinels sign
Tapping on median nerve leads to parasthesia
What nerve compressed in carpal tunnel
Median
Carpal tunnel presentation
Pain or pins and needles in the median nerve distribution- middle finger to thumb
Shaking hand to relieve sx especially at night
Electrophysiology findings of carpal tunnel
Prolongation of motor and sensory action potentials
What are exam findings in carpal tunnel
Wasting of thenar eminence
Reduced thumb abduction
Sensory loss middle finger to thumb
Tinels and phalens signs
What can cause carpal tunnel
Idiopathic
RA
Oedema
Pregnancy
Acromegaly
Amyloidosis
Management of carpal tunnel
Mild/moderate- options include wrist splint (especially if transient cause like pregnancy), corticosteroid injections
Severe- decompression by dividing flexor retinaculum
Management of carpal tunnel if pregnant
Wrist splint as only transient
Presentation of stress fractures
Prolonged usage of that limb
Sudden onset severe pain
X ray finding of stress fracture
Callous formation at site of pain
Management of stress fractures
If very severe pain then immobilisation
What is tibial stress syndrome
Constant pressure in legs seen in athletes and military personnel leads to pain and tenderness over the tibia
Management of tibial stress syndrome
Rest and recovery
Do an x ray to rule out a stress fracture
Causes of cauda equina syndrome
Most common- central disc prolapse
Tumours
Haematomas
Abscesses
Trauma
Presentation of cauda equina
Back pain
Bilateral sciatica
Saddle paraesthesia/ pins and needles
Reduced anal tone
Incontinence is a late sign
What is a late sign of cauda equina
Urinary incontinence
Management of patient with cauda equina
Urgent MRI
Surgical decompression
What does positive straight leg test indicate
sciatic nerve pain from prolapsed disc
Knee pain which worse after exercise in teenager, causes knee to lock and clunk
Osteochondritis dissecans
When urgently do MRI in sciatica
Weakness or parasthesia
Bladder or bowel dysfunction
Bilateral symptoms
Second line options for prolapsed discs
Neuropathic analgesiacs
What do if prolapsed discs fail to respond to NSAIDs, physio and neuropathic options
Injections or a surgery
What causes a colles fracture
Falling on outstretched hands
What causes a smiths fracture
Falling onto posterior side of hand/wrist
How investigate compartment syndrome
Intracompartmental pressure measurements
Above 40 is diagnostic
Key presentation features of compartment syndrome
Pain on movement
Pallor
Swelling
Paralysis
Parasthesia
What are risk factors for compartment syndrome
Supracondylar fractures
Tibial shaft injuries
Fixation with intramedullary nails
What use to determine if ankle x ray needed for suspected fracture
Ottowa rules
When need to use x ray for suspected ankle fracture
If pain in ankle area plus 1 of
- bony tenderness in lateral malleolar zone
- bony tenderness in medial malleolar zone
- unable to walk 4 steps after injury and in ED
What are the medial and lateral malleolus zone
Medial- within 6 cm upwards from medial malleolus
Lateral- within 6cm upwards from lateral malleolus
What is cubital tunnel syndrome
Compression of the ulnar nerve
Presentation of cubital tunnel syndrome
Tingling and numbness in the 4th and 5th fingers
May develop weakness and muscle wasting in that area
Pain worse when lean on elbow
Management principals of cubital tunnel syndrome
Physio, steroid injections
Surgery if resistant
How differentiate avascular necrosis of hip from osteoarthritis of hip
Avascular necrosis may present with night pain
Exacerbated by exercise too
No stiffness
Causes of avascular necrosis of hip
Steroids use
Chemo
Alcohol xs
How image avascular necrosis of hip
Plain x ray most likely will be normal but can see crescent sign
MRI investigation of choice
Management of avascular necrosis of hip
Joint replacement may be necessary
What is pathology in colles fracture and which nerve at risk of being damaged
Falling onto an outstretched hands causing distal radial fracture with dorsal displacement of fragments
Median nerve vulnerable
What is dinner fork type deformity seen in
Colles fracture
Plantar fasciitis presentation
Heel pain worse when walking
Most commonly affected under the back of heel on bony part
Management of plantar fasciitis
Rest
Shoes with good arch and cushioned heels
Weight loss
In which metatarsal are stress fractures most commonly seen in
2nd
What is immediate management of an ankle fracture
Prompt closed reduction to prevent damage to skin
What factors make more likely to operate on ankle fractures
Young
Proximal injury
High velocity
Unstable
What is most common reason for having to revise a total hip replacement
Aseptic loosening of the implant
What does tibia displacing posteriorly on application of force suggest
PCL rupture
Imaging for spinal canal stenosis
MRI
Management of lumbar spinal stenosis
Laminectomy- removes part of vertebral bone
What is de quervains tenosynovitis
Inflammation of the sheath surrounding the extensor pollicis and abductor pollicis longus
Presentation of de quervains tenosynovitis
Pain on radial side of wrist
Abduction of thumb painful
Positive finkelsteins test
What is finkelsteins test
Put the wrist in ulnar deviation-pull the thumb in abduction movement and will recreate pain over radial styloid process
What does positive finkelsteins test show
De quervains tenosynovitis
Management of de quervains tenosynovitis options
Analgesia
Steroid injection
Thumb splint
Management of rib fractures
Conservative- ensure good analgesia to make sure breathing not affected by pain, physio too
What are complications of rib fractures
Pneumothorax
Haemothorax
Poor ventilation leading to chest infections
Flail chest
Management of flail chest from rib fractures
Discuss with cardiothoracics
What can be used if simple analgesia does not work for rib fractures
Intercostal nerve blocks
When consider surgery for rib fractures
12 weeks and no healing
Flail chest
What imaging need to do for rib fractures
CT following CXR
Why give analgesia and physio after a rib fracture
To ensure good ventilation thus reducing infection risk
How does leg appear in hip fracture
Short and externally rotated
Garden classification of hip fractures
Type I: Stable fracture with impaction in valgus
Type II: Complete fracture but undisplaced
Type III: Displaced fracture, usually rotated and angulated, but still has boney contact
Type IV: Complete boney disruption
stage I and II are stable fractures and can be treated with internal fixation (head-preservation)
stage III and IV are unstable fractures and treated with arthroplasty (either hemi- or total arthroplasty)
Intra vs extra capsular hip fractures
Intra capsular= the angled capsule
Extracapsular= top part of femur
How are extracapsular hip fractures classified
Intertrochanteric
Subtrochanteric
Dividing line is horizontal to the the lesser trochanter
Management of intracapsular fractures in elderly
Undisplaced= internal fixation
Displaced= arthroplasty- total preferred if able to walk independantly with stick or more, cognitively functional and medically fit for anaesthesia