Deformity of the proximal tibia in dogs

Area of Science:

• Veterinary Orthopedics
• Canine Biomechanics
• Developmental Orthopedic Conditions

Background:

• A previously unrecognized condition affecting young dogs has been identified.
• The condition is characterized by cranial bowing of the proximal tibia.

Observation:

• The tibial deformity occurs bilaterally, though often to different degrees.
• It can be associated with genu varum (bow legs).

Findings:

• The altered tibial conformation impacts stifle joint biomechanics.
• Four out of five affected dogs developed degenerative joint disease and cranial cruciate ligament rupture.
• The likely cause is growth retardation in the caudal aspect of the proximal tibial physis.

Implications:

• This condition poses a significant risk for stifle joint instability and secondary injuries in young dogs.
• Current surgical interventions for joint instability show only moderate success rates.
• Further research into the etiology and improved treatment strategies for this tibial deformity is warranted.