LECTURE 4 OSTEOMYELITIS
ACUTE CHRONIC
PYOGENIC TRAUMATIC SUPPARATIVE SPECIFIC
(AVASCULAR)
Chronic non Brodie’s absces Tuberculosis Skeletal
specific of bone syphilis
Incidence Common in children (males) Occurs at any age Adults are commonly • Common in Common in
affected children children where
• Occurs at spread occurs
high patient by blood stream
resistance from primary
and low focus
virulence
organism
Pathogenesis • The lesion • Occurs on top of • Affects Affect long Bone
occurs in the acute metaphysis bones, short involvement
diaphysis of haematogenous • Forms a well- bones remains
long bone or traumatic circumscribed (dactylitis) and infrequent.
and skull osteomyelitis small intra- vertebrae
bone osseous (Pott’s disease) Congenital
• Multiple cloacae
• No formation abscess syphilis
discharging pus
of (frequently Pott’s Disease osteochondritis
• Complications -common in and periostitis
subperiosteal involves the
abscess due cortex) children
to adherent surrounded Acquired
periosteum by reactive syphilis
sclerotic bone disease
bone may begin early
• May be Route of in the tertiary
complicated infection: stage
in secondary Blood borne
amyloidosis infection (reach
vertebrae by
blood stream)
Site of the
lesion:
, LECTURE 4 OSTEOMYELITIS
-the
commonest
sites (lower
dorsal and
upper lumbar
vertebrae
-weight bearing
-affect cervical
vertebrae
-more than one
vertebrae is
affected
Initial lesion
-body of
vertebrae
(anterior part)
because most
vascular
-tuberculous
reaction leading
to caseation
and destruction
of the body and
intervertebral
disc
-spread to
involve the
transverse
process but
sparing the
spine
Complication • Septicaemia -pathological fracture Local The syphilitic
s and toxaemia -secondary amyloidosis complications saber shin is
• Systemic -joint effusion -deformity of produced by
pyemia the spine massive
ACUTE CHRONIC
PYOGENIC TRAUMATIC SUPPARATIVE SPECIFIC
(AVASCULAR)
Chronic non Brodie’s absces Tuberculosis Skeletal
specific of bone syphilis
Incidence Common in children (males) Occurs at any age Adults are commonly • Common in Common in
affected children children where
• Occurs at spread occurs
high patient by blood stream
resistance from primary
and low focus
virulence
organism
Pathogenesis • The lesion • Occurs on top of • Affects Affect long Bone
occurs in the acute metaphysis bones, short involvement
diaphysis of haematogenous • Forms a well- bones remains
long bone or traumatic circumscribed (dactylitis) and infrequent.
and skull osteomyelitis small intra- vertebrae
bone osseous (Pott’s disease) Congenital
• Multiple cloacae
• No formation abscess syphilis
discharging pus
of (frequently Pott’s Disease osteochondritis
• Complications -common in and periostitis
subperiosteal involves the
abscess due cortex) children
to adherent surrounded Acquired
periosteum by reactive syphilis
sclerotic bone disease
bone may begin early
• May be Route of in the tertiary
complicated infection: stage
in secondary Blood borne
amyloidosis infection (reach
vertebrae by
blood stream)
Site of the
lesion:
, LECTURE 4 OSTEOMYELITIS
-the
commonest
sites (lower
dorsal and
upper lumbar
vertebrae
-weight bearing
-affect cervical
vertebrae
-more than one
vertebrae is
affected
Initial lesion
-body of
vertebrae
(anterior part)
because most
vascular
-tuberculous
reaction leading
to caseation
and destruction
of the body and
intervertebral
disc
-spread to
involve the
transverse
process but
sparing the
spine
Complication • Septicaemia -pathological fracture Local The syphilitic
s and toxaemia -secondary amyloidosis complications saber shin is
• Systemic -joint effusion -deformity of produced by
pyemia the spine massive
