When would you use a DCP (dynamic compression plate) on a carpal injury?
When you want to perform a pancarpal arthodesis because the antebrahiocarpal joint is abnormal and all 3 joints need to be fused (do in conjunction w/removal of all cartilage and cancellous bone graft)
Place on dorsal surface
BEST TREATMENT FOR CARPAL LUXATIONS, antebrachial carpal injuries
More commonly done tha partial carpal arthodesis
What are the indications for surgical treatment of a shoulder luxation?
Accompanying fractures (e.g. HBC injuries)
What is the most mobile joint in the carpus? Tarsus?
I.e. these are least likely to be affected by luxations
What is the recommended treatment for collateral injury of the tarsus/carpus?
Surgical mgmt- reconstruction/replacement of the ligamenets
Splint + rest not helpful alone, ESF can help joint stay stable while soft tissue trauma is healing
What are the 3 steps to surgically repairing a shoulder luxation?
1. Arthrotomy (to evaluate/reduce joint)
2.Glenohumeral ligament (MGHL) repair
3. Imbrication/repair of capsule (during closure)
What are the 5 risk factors for OA?
Size and growth rate (large breed dogs)
Repeated trauma and mechanical stress
Which of the following are medial and which are lateral on the tarsus?
Trochlea of the talus
Metatarsal bone I
Metatarsal bone V
Central tarsal bone
Medial:Trochlea, MT I, central tarsal bone
Lateral: Calcaneous, MT V
T/F: Excess weight will accelerate the expression of OA/DJD.
No such thing as too thin for any dog w/OA
Why are corticosteroids not recommended with DJD?
Steroids depress chrondrocyte metabolism and alter the matrix and can affect collagen formation, so they have long term deleterious effects
What is the typical signalment for congenital shoulder luxation?
Small or Toy breed dog
3-10 months of age
Shetland sheepdog, Collie, Elkhound too
What can you do to treat pain due to end-stage OCD in the tarsocrural joint?
Fuse in standing angle, remove articular cartilage, pack w/bone graft, rigid fixation
What does it indicate if a dog is chewing at his toes that are peaking out of the bottom of a bandage?
Bandage too tight
What is the purpose of curettaging in OCD surgery?
To stimulate fibrocartilage
What type of disease (infectious, non-infectious nonerosive, non-infectious erosive, non-inflammatory) shows the following radiographic signs:
Joint space collapse
Multiple joints affected
No bony changes
What breeds are predisposed to infraspinatus contracture?
(Spaniels, Pointers, Retreivers)
GSD are particularly predisposed to what form of elbow displasia?
How many tarsal bones are there?
Which portion of the tarsal collateral ligament is taut only in extension? Which is taut in both flexion and extension?
Long- Extension only
Short- Extension and flexion
What type of incongruity is associated with UAP? FCP?
UAP- short ulna + long radius
FCP- short radius + long ulna
What diagnostic can you use to definitively establish whether joint disease is inflammatory or not?
Shoulder instability will cause medial instability and an increased ______ angle. Normal is ___ degrees, abnormal is over ___ degrees. Many clinical causes fall between these values.
What surgical treatment is indicated for shoulder OCD?
First remove flap and lavage joint
Then debride bone with curette/shaver
What are 3 options for post-op immobilization after a calcanean tendon repair?
Giant lag screw (from calcaneous to tibia)
Often combo of these
What stess laterally deviates the limb? Medially?
Vargus = Medial
What supporting structure(s) is/are most commonly affected with shoulder instability?
Medial structures: Medial glenohumeral ligament, Suprascapularis tendon
Where do OCD lesions on the tarsus occur?
What joint condition is this posture associated with? Describe the posture in terms of what is adducted and what is externally rotated.
MCD (medial compartment disease)
"Toed out" posture
Toes/rest of limb abducted
Taking strain of medial compartment
Is osteoarthritis/osteoarthosis inflammatory or not?
What surgery is this? When is it indicated? Describe what's going on.
Partial carpal arthodesis
When antebrachiocarpal joint is healthy
Middle and carpometacarpal joints are fused using a T-Plate (or pins)
If IOHC (incomplete ossification of the humeral condyle) presents to you with no displacement or fractures, how do you treat?
Single lag screw through condyles