OCD and SBC Specific to Joint

Question 1

How often is the lesion bilateral?

Answer 1

50% of the time, aways check the other limb

Question 2

Where is OCD most comonly found?

Answer 2

Gliding Surfaces
Stifle - LTR, MTR, Patella
Tibiotarsal - DIRT, LTRT

Question 3

Where does SBC commonly occur?

Answer 3

Weight Bareing Surfaces
Stifle - MCF. LCF
Tibiotarsal, Glenohumeral

Question 4

Describe common issues in the Femropatellar joint:

Answer 4

OCD very common, SBC uncommon
-Lameness
-Prominent Effusion
-Lateral trochlear ridge more common
Kissing lesion on patella

Question 5

Describe common issues in the Femorotibial joints:

Answer 5

SBC very common, OCD uncommon
-Lameness exam (IA, 50% improvement)
-Medial FT joint
-Need caudocranial view, caudolateral to craniomedial oblique, marginal sclerosis

Question 6

What are the classifications of SBC based on communication with joint?

Answer 6

Type 1: Dome Shaped
Type 2: Circular with narrow channel to joint surface
Type 3: Dimple

Question 7

Describe common issues in the tibiotarsal joint:

Answer 7

OCD very common, SBC on trochlear ridges uncommon
-present early due to effusion
-Lameness - minimal, flexion to see, bog spavin

Question 8

Where does OCD like to be in the tarsus?

Answer 8

Distal intermediate ridge of tibia (See on lateral, DMPLO, and DLPMO)
Medial malleolus of tibia
distal lateral trochlear ridge of tarsal bone

Question 9

Describe common issues in the metacarpo/tarsophalangeal joint:

Answer 9

OCD
- multiple or all joints
-Lame
-Rad
-Arthroscopic
-Good prognosis

Question 10

Describe common issues in the metacarpo/tarsophalangeal joint SBC

Answer 10

SBC>OCD
-lameness exam - effusion and flexion +
-Medial condyle
Surgical outcome good

Question 11

Describe common issues in the glenohumeral joint

Answer 11

OCD
-hard to predict prognosis
-lameness exam
-rad obscure lesion
-Arthroscopic procedure

SBC
-diagnosis same
-difficult to access

Question 12

Describe common issues in the proximal interphalangeal joint

Answer 12

SBC
Early lameness and DJD
-Lame with positive flexion
-Rads
Treat DJD arthrodese

Question 13

Describe common issues in the distal interphalangeal joint

Answer 13

SBC>OCD
-lameness - no swell, positive to flexion
Rad - DP60, Lateral
-cant get to arthroscopically (through hoof wall)

Question 14

Describe common issues in the extensor process OCD

Answer 14

Separate center ossificaiton
arthroscopy

Question 15

Describe common issues in the radio humeral joint

Answer 15

SBC
- lameness, long heel
Medial proximal radial condyle
Don’t do well
conservative steroid intralesional

OCD
-less common
-present similar with heel
-distal humeral condyle
anthropic ok, conservative

Question 16

Describe common issues in the carpus

Answer 16

Less commonly affected
-Distal radial SBC
-Lameness exam

Question 17

What are some key things to remember with SBC?

Answer 17

Determine if it communicates with the joint - many views, response to flexion, response to block, contrast study (may not cause lameness if it doesn’t connect to joint)

Question 18

Describe common issues in the coxofemoral joint

Answer 18

Lameness, positive flexion, IA anesthesia
Cyctic