Thoracic Lameness Part One Learning Objectives

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Questions and Answers

What is the most common clinical presentation of carpal hyperextension injury?

Variable lameness (correct)

Joint effusion

Soft tissue swelling

Hyperextended stance

What is the main purpose of partial carpal arthrodesis in the treatment of carpal hyperextension injury?

To remove cartilage from the joint

To restore normal radiocarpal joint

To perform full fusion of all carpal bones

To preserve motion of the carpus (correct)

How long does it typically take for a partial carpal arthrodesis to fuse and provide clinical union?

2-4 weeks

4-6 weeks

8-12 weeks

12-16 weeks (correct)

What are the components of elbow dysplasia?

Incomplete ossification of the humeral condyle, elbow luxation, shoulder luxation/instability Signup and view all the answers

Which diagnostic imaging technique can be used to look for concurrent collateral damage in carpal hyperextension injury?

Orthogonal and stressed radiographic views Signup and view all the answers

What is the main purpose of pancarpal arthrodesis in the treatment of carpal hyperextension injury?

To perform full fusion of all carpal bones Signup and view all the answers

What is the suggested aftercare for Hyperextension injury

Pain relief, NSAID + adjunctive x 7-10 days, strict confinement, regular bandage changes Signup and view all the answers

What is the purpose of the orthovet brace in treating carpal hyperextension injury?

To prevent further hyperextension of the carpus Signup and view all the answers

Which condition is NOT associated with conditions of the Carpus and Metacarpals?

Elbow dysplasia Signup and view all the answers

What is the typical onset of lameness in large- and giant-breed, fast-growing dogs with elbow dysplasia?

5-7 months Signup and view all the answers

What is the most common complication of ulna osteotomy in dogs with radial-ulna incongruence?

Premature fusion Signup and view all the answers

What is the primary theory on the cause of fragmented medial coronoid process (MCP) in dogs?

All of the above Signup and view all the answers

What is the most sensitive diagnostic tool for diagnosing elbow dysplasia in dogs?

MRI Signup and view all the answers

What percentage of dogs treated with arthroscopy for fragmented medial coronoid process (MCP) experience increased long-term lameness?

7% Signup and view all the answers

What is the typical age range for complete ossification of the anconeal process in dogs?

> 12 weeks Signup and view all the answers

What is the goal of flap removal in the treatment of osteochondritis dissecans (OCD) in dogs?

Debride to bleeding subchondral bone Signup and view all the answers

What is the main purpose of abrasion arthroplasty in the treatment of medial compartment disease in dogs?

Stimulate fibrocartilage formation by making the underlying bone bleed Signup and view all the answers

What is the diagnostic method of choice to determine if there is radial-ulna incongruence in dogs?

Difference > 4mm on radiographs Signup and view all the answers

What is the typical prognosis for elbow dysplasia regardless of intervention?

The condition will progress regardless of intervention Signup and view all the answers

Study Notes

Carpal Hyperextension Injury

Common clinical presentation includes pain, swelling, and reduced range of motion in the carpal joint.
Partial carpal arthrodesis aims to stabilize the joint by fusing it, reducing pain and restoring function.
Fusion after partial carpal arthrodesis typically takes around 3 to 6 months for clinical union.
Pancarpal arthrodesis is performed to provide complete stability to the carpus in severe cases of hyperextension injury.

Elbow Dysplasia

Components of elbow dysplasia include fractured medial coronoid process (MCP), ununited anconeal process, and elbow incongruity.
Large- and giant-breed, fast-growing dogs often show lameness onset between 4 to 12 months of age.
The most sensitive diagnostic tool for elbow dysplasia is radiography, especially with stress views.
A common complication of ulna osteotomy in dogs with radial-ulna incongruence is persistent lameness.

Treatment and Management

Suggested aftercare for hyperextension injury may include rest, physical rehabilitation, and monitoring for complications.
The Orthovet brace serves as a stabilizing mechanism to limit motion and promote healing in carpal hyperextension.
Abrasion arthroplasty treats medial compartment disease by creating microfractures in the joint surface to stimulate healing.
Flap removal in osteochondritis dissecans (OCD) aims to alleviate pain and restore joint function.
Diagnostic method of choice for radial-ulna incongruence involves comprehensive radiographic evaluation.

Prognosis and Complications

Dogs treated via arthroscopy for fragmented MCP may experience increased long-term lameness in approximately 20% of cases.
Complete ossification of the anconeal process in dogs typically occurs between 5 to 6 months of age.
The overall prognosis for elbow dysplasia remains guarded regardless of intervention, with many affected dogs requiring ongoing management.
Conditions not associated with the carpus and metacarpals may include those affecting the shoulder joint or hip.

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Description

Learn about the differentials for lameness in the carpus, elbow, and shoulder regions of the forelimbs as well as the etiopathology, diagnosis, treatment, and outcome of various injuries and conditions such as carpal hyperextension injury, elbow dysplasia, and shoulder luxation. Understand the components of elbow dysplasia and conditions of the carpus and metacarpals.