The pathophysiology of chronic laminitis. Pain and anatomic pathology.

Summary

# Editorial Summary: The pathophysiology of chronic laminitis. Pain and anatomic pathology Morgan, Grosenbaugh, and Hood's 1999 examination of chronic laminitis pathophysiology reveals that the structural damage occurring within the foot extends far beyond what clinical or radiographic assessment can detect. The authors document how variable the pathological presentations become once laminitis becomes chronic, reflecting both the diversity of initial triggers and the cascade of secondary tissue breakdown that ensues. Critically, their work demonstrates that horses presenting with apparently normal radiographs and improved clinical signs frequently harbour significant residual morphological defects within the laminar and supporting tissues—findings that have substantial implications for realistic prognosis and long-term management expectations. For practitioners involved in rehabilitation, this underscores the importance of conservative return-to-work protocols and continued monitoring even when superficial indicators of recovery appear favourable. Understanding that physiological and structural compromise persists beneath a seemingly recovered appearance should inform both owner counselling about functional limitations and the tailored therapeutic approaches required to manage chronic laminitis cases effectively over time.

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Key Findings

• •Chronic laminitis presents with varied pathologic manifestations depending on inciting agents
• •Physical examination alone cannot accurately predict rehabilitation potential and return to function
• •Significant physiologic and pathologic alterations persist in chronic laminitis even when radiographic appearance normalizes
• •Residual morphologic and structural defects remain despite apparent radiographic recovery

Conditions Studied