What is bone spavin?
DJD of distal tarsal and TMT joint
What term is used to describe the stance of this horse?
T/F: MRI can be as good as arthroscopy for detecting subchondral lesions
What are the medical management options for bone spavin?
- Intra-articular injections of corticosteroids and chondroprotectives
Medical management might be disappointing and lameness may persist in 25-50% of horses
How does laser-facilitated ankylosis work?
Destroys cartilage by superheating and vaporizing synovial fluid
When drilling for P1 fractures, the most proximal screw must be within ____ of the sagittal groove
This horse has an incomplete fracture of P1. What is the recommended treatment?
Lag screw or cast only + strict stall rest
T/F: Many splint bone fractures can be treated successfully with rest
T/F: Fetlock arthrodesis is considered a salvage procedure
Fractured splint bone
Fracture of the middle aspect of the splint bone:
- Are usually treated via removal of the fractured bone under general anesthesia
- Usually result from external trauma and most commonly affect metacarpal IV and metatarsal IV
- May cause suspensory dermitis
- Often cause swelling of the MT region and do not require a nerve block for definitive diagnosis
- All of the above
All of the above
In cases of splint bone fracture, if you're removing residual distal splint bone, it is important not to remove more than the distal 2/3 of the splint bone.
What is the exception?
T/F: Proliferative periostitis is most common in older horses
Proliferative periostitis is most common in young horses
T/F: Splint exostosis is the result of straining and tearing of the interosseous ligament connecting the splint bone to the cannon bone
T/F: Splint bone fractures are caused by hyperextension of the fetlock or external trauma
__________ ligament connects the splint bone to the cannon bone
Ligamentous injury results in desmitis and periostitis
T/F: With appropriate treatment the prognosis for returning to racing with bucked shins is good
This injury on the 3rd metacarpus is most commonly seen in which patient
- 2-wk old foal that has been running after its dam
- A yearling cold that has been castrated
- 2 yr old race horse in training
- A 8 year old mare QH used for barrel racing
- None of the above
2 yr old race horse in training
(Image is of a bucked shin)
How do you reduce the incidence of bucked shins?
regular short distance breezing and less long distance galloping
T/F: Osteostixis is recommended for unicortical fractures of the splint bone
Osteostixis is recommended for unicortical fractures of the cannon bone
VI represents a ________ fracture of the proximal sesamoid bones
III represents a ________ fracture of the proximal sesamoid bones
I represents a ________ fracture of the proximal sesamoid bones
V represents a ________ fracture of the proximal sesamoid bones
__________ are the most common fractures of the proximal sesamoid bones