Introduction

A complex condition of chickens that may be associated with trauma, growth plate disease, rickets, bacterial infection, osteomyelitis, and /or trauma.

Signs

• Apparent dislocation at extremities of long bones.

Post-mortem lesions

• Separation of epiphyses at the growth plate, sometimes seen in vivo, often occurs or is identified in the processed carcase.

Diagnosis

Gross inspection, histology may be helpful in identifying underlying problems such as rickets or 'FHN'.

Treatment

Not applicable.

Prevention

Control of predisposing factors.