2010 SAQ Flashcards
List the 4 Stages of Perilunate Instability
- scapholunate dissociation or scaphoid fracture
- capitolunate dislocation
- lunotriquetrial dissociation or triquetral fracture
- lunate dislocation
List the 7 CanMeds Components
“Please Help Me Memorize Stupid Canmeds Crap”
- professional
- health advocate
- medical expert
- manager
- scholar
- communicator
- collaborator
List the 4 Types of Neural Tube Defects
- spina bifida occulta
- spina bifida cystica:
- meningeocele
- myelomeningeocele
- myeloschisis
List stages of Keinboch’s
- I: changes evident only on MRI
- II: sclerosis on plain radiographs
- IIIA: lunate collapse and/or fragmentation w/o carpal instability
- i.e. normal radioscahpoid angle / no fixed rotation of schapoid
- IIIB: lunate collapse and fragmentation with carpal instability
- radioscaphoid angle > 60° = fixed roration of scaphoid
- IV: pancarpal arthritis
Most reliable sign of DDH in 8 month old
- leg length discrepancy (+ve Galezzi / Allis)
- decrease ABduction
4 Blocks to reduction of DDH
- extra-articular: iliopsoas, Adductor longus
- intra-articular: capsule, inverted labrum, ligamentum teres, pulvinar, transverse acetabular ligament
70 yr old male with CR TKA (120 Degrees pre-op) now with NO pain, Flexion of 75 degrees and full extension. Infection ruled out. List 4 causes for this.
- femoral component too big
- insufficient tibial posterior slope
- non-compliant w/ post op rehab
- inappropriate balancing (PCL too tight)
- lack of posterior condyle resection
List Common causes of AVN (three) - You were given an obvious xray with AVN in 45 yr old.
direct causes
- trauma
- irradiation
- hematologic d/c (leukemia, lymphoma)
- cytotoxins
- dysbaric ON (Caisson disease)
- Gaucher disease
- Sickle cell disease / trait
indirect causes
- EtOH abuse
- “immune deficiency” conditions
- corticosteroids
- organ transplant
- HIV
systemic conditions
- renal failure
- systemic lupus erythematosus
blood conditions
- thrombophilia
70 yr old with cemented THA, 1 yr history of thigh pain and periprosthetic fracture. List 3 factors important in the surgical management
- work up for infection
- Vancouver classification!
- location of fracture
- implant stability
- remaining bone stock
- pre-op medical optimization
List 4 Indications for percutaneous pinning of distal radius in a child
- inability to obtain a reduction
- inability to maintain a reduction (i.e. loss of reduction)
- ipsilateral radius and elbow fracture / multi-trauma
- displaced intra-articular fractures (SH III/VI)
- soft tissue compromised
50 yr old female with 2 week history of inability to extend 4th and 5th fingers. List 3 common causes in a Rheumatoid patient
- extensor tendon rupture (Vaughn Jackson syndrome)
- sagittal band rupture with subluxation of extensor tendon at MCP joint
- PIN palsy (compression at the RC joint)
- MCP dislocation (volar, volar plate atteniuation)
Describe the Leadbetter manoeuvre.
- flex the hip to 90 deg, w/ slight adduction, and apply traction in line with the femur;
- maintaining traction, apply internal rotation to 45
- slight abduction and full extension, while maintaining traction and internal rotation
3 sites of compression in radial tunnel syndrome
“FREAS’D”
- fibrous bands from radiocapitellar joint
- recurrent leash of henry
- ECRB
- Arcade of Frohse
- Supinator
- Distal edge of supinator
Name 3 main lateral elbow stabilizers
- static stabilizers:
- LUCL
- radiocapitellar joint
- common extensor tendon origin
- dynamic stabilizers
- Anconius
- brachialis
- biceps
- triceps
remember:
- 1° stabilizers of elbow: UH articulation, ant band of MCL, LUCL
- 2° stabilizers of elbow: RC articulation, flexor pronator origin, common extensor origin
What is the most important of these lateral structures
LUCL
