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Book Contents

Histopathology and Cytology of
Poultry Diseases
By Ivan Dinev, DVM, PhD


FEMORAL HEAD NECROSIS

Fig. 1. A non-specific disease, more
exactly a lesion, associated to various
causes. In most cases, the condition is
accompanied with bacterial osteomyelitis.
The figure presents a necrotic
focus (N) among the bone marrow
of the femoral canal in a 40-day-old
broiler chicken with osteomyelitis.
H/E, Bar = 40 µm.

Fig. 1. A non-specific disease, more exactly a lesion, associated to various causes. In most cases, the condition is accompanied with bacterial osteomyelitis. The figure presents a necrotic focus (N) among the bone marrow of the femoral canal in a 40-day-old broiler chicken with osteomyelitis. H/E, Bar = 40 µm.

 
Fig. 2. The severe thinning of the cortex
in the femoral neck region consequently
to rickets, is among the
factors predisposing to femoral head
fractures and necroses. H/E, Bar = 50
µm.

Fig. 2. The severe thinning of the cortex in the femoral neck region consequently to rickets, is among the factors predisposing to femoral head fractures and necroses. H/E, Bar = 50 µm.

 
Fig. 3. Periosteal disruption and fracture
in the proximal femoral region
in a case of femoral head necrosis.
H/E, Bar = 50 µm.

Fig. 3. Periosteal disruption and fracture in the proximal femoral region in a case of femoral head necrosis. H/E, Bar = 50 µm.

 
Fig. 4. Abnormal masses of hypertrophic cartilage, protruding
into the epiphysis in rickets, that caused femoral
head necrosis and fracture at later stage. H/E, Bar = 100
µm.

Fig. 4. Abnormal masses of hypertrophic cartilage, protruding into the epiphysis in rickets, that caused femoral head necrosis and fracture at later stage. H/E, Bar = 100 µm.

 
Fig. 5. Necrosis and hemorrhages
among the prehypertrophic cartilage
in a case of dyschondroplasia, that
initiated femoral head necrosis and
fracture in a broiler chicken. H/E, Bar
= 25 µm.

Fig. 5. Necrosis and hemorrhages among the prehypertrophic cartilage in a case of dyschondroplasia, that initiated femoral head necrosis and fracture in a broiler chicken. H/E, Bar = 25 µm.

 
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