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Medial Coronoid Disease of the Elbow

Clinician's Brief (Capsule)

Orthopedics

|March 2016

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Medial coronoid disease is commonly diagnosed in young large-breed dogs. The pathophysiology of this important orthopedic problem is not well-defined. As such, a variety of treatment options, including both surgical and conservative approaches, have been proposed. This prospective observational case series documented consistent short- and long-term outcomes for 15 dogs (23 elbows) treated arthroscopically for medial coronoid disease. Outcome measures included radiographic, CT, arthroscopic, force plate, and orthopedic examination observations. Dogs with radioulnar incongruency (RUI) and/or severe cartilage erosion preoperatively exhibited a greater degree of lameness. Postoperative improvement was greater in these dogs, as measured by gait analysis. Clinical assessment of long-term performance ≥2 years after surgery based on muscle mass and gait analysis did improve despite increased osteoarthritis score.

Commentary

Treatment of medial coronoid disease varies widely among surgeons, and little comparative data exist to support any surgical methods used on a routine basis. This study provided useful multimodal outcome measures, including long-term objective follow-up that has not previously been reported. Initial observations of joint health and congruency were informative but were not predictive of impacting long-term mobility. Arthroscopic treatment using fragment removal and/or subtotal coronoidectomy in more severe cases provided long-term improvement in this small cohort. Lameness was not completely resolved, which suggests disease progression was still evident.—Jason Bleedorn, DVM, DACVS

References

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