bone infection bone infection. osteomylitis definition:- inflammation of the bone or bone marrow...
TRANSCRIPT
![Page 1: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/1.jpg)
Bone Bone infectioninfection
![Page 2: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/2.jpg)
OsteomylitisOsteomylitis
Definition:-Definition:- inflammation of the bone or inflammation of the bone or bone marrow caused by infection.bone marrow caused by infection.
Two types:- Two types:- PyogenicPyogenic T.B osteomylitis T.B osteomylitis
![Page 3: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/3.jpg)
Pyogenic osteomylitisPyogenic osteomylitis
Causetive organisms:-Causetive organisms:-
Staphylococcus aureusStaphylococcus aureus
Age :-Age :-
Infants and childrenInfants and children
Organisms may infect bone through:-Organisms may infect bone through:-
1- Bloodstream, from local areas of infection (as in 1- Bloodstream, from local areas of infection (as in cellulitis).cellulitis).
2- Penetrating trauma e.g joint replacements or 2- Penetrating trauma e.g joint replacements or internal fixation of fractures.internal fixation of fractures.
![Page 4: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/4.jpg)
Pyogenic osteomylitisPyogenic osteomylitis
Site of affection :-Site of affection :-The most common site is tubular bones as they The most common site is tubular bones as they
have the most rapid growth and the largest have the most rapid growth and the largest metaphysismetaphysis
Clinical picture:-Clinical picture:- With acute osteomyelitis, the presenting With acute osteomyelitis, the presenting
complaint is usually local pain, swelling, and complaint is usually local pain, swelling, and warmth, often associated with fever and malaise.warmth, often associated with fever and malaise.
Affect children Affect children
![Page 5: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/5.jpg)
Radiographic Radiographic appearance of appearance of OsteomyleitisOsteomyleitis Radiographic changes after Radiographic changes after
10-14 days after onset of 10-14 days after onset of infection.infection.
Soft tissue swelling ( the Soft tissue swelling ( the earliest sign).earliest sign).
Cortical thickening Irregularity of cortices Sclerosis
![Page 6: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/6.jpg)
Radiographic appearance Radiographic appearance of Osteomyleitisof Osteomyleitis
Bone destruction in the Bone destruction in the metaphysis.metaphysis.
Periosteal reaction, may become Periosteal reaction, may become very extensive and surround the very extensive and surround the bone to form an involucrum.bone to form an involucrum.
![Page 7: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/7.jpg)
Radiographic Radiographic appearance of appearance of OsteomyleitisOsteomyleitis A part of original bone may A part of original bone may
die and form a separate die and form a separate dense fragment called dense fragment called sequestrum.sequestrum.
![Page 8: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/8.jpg)
Radiographic Radiographic appearance of appearance of OsteomyleitisOsteomyleitis
Brodie’s abscess:Brodie’s abscess: It occurs when osteomylitis is partially treated .It occurs when osteomylitis is partially treated . Brodie’s abscess is a spherical region of bone Brodie’s abscess is a spherical region of bone
destruction, filled with pus or connective tissue, destruction, filled with pus or connective tissue, Oval translucency larger than 1cm surrounded by Oval translucency larger than 1cm surrounded by
a heavily reactive sclerosis near end of long a heavily reactive sclerosis near end of long bones (metaphysis).bones (metaphysis).
Small sequestrum may be present.Small sequestrum may be present. Loss of differentiation between the cortex and Loss of differentiation between the cortex and
the medulla.the medulla.
![Page 9: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/9.jpg)
Brodie’s abscessBrodie’s abscess
Typical appearance of a Brodie's abscess is :-
Lucency within the distal metaphysis with surrounding reactive sclerosis.
![Page 10: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/10.jpg)
![Page 11: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/11.jpg)
Role of radionuclide Role of radionuclide imageimage
Much more sensetive for detecting early diseaseMuch more sensetive for detecting early disease Increased uptake after two to three days.Increased uptake after two to three days.
![Page 12: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/12.jpg)
Role of ultrasoundRole of ultrasound
Demonstrate subperiosteal collection of pus well Demonstrate subperiosteal collection of pus well before bone changes on plain x-ray,before bone changes on plain x-ray,
![Page 13: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/13.jpg)
Role of MRIRole of MRI Shows the changes early as bone edema and pus Shows the changes early as bone edema and pus
accumuation.accumuation.
Detect the extent of the infection better than Detect the extent of the infection better than other modalities.other modalities.
![Page 14: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/14.jpg)
Role of CTRole of CT May be used in selected cases to show sequestra May be used in selected cases to show sequestra
![Page 15: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/15.jpg)
How to D.D between How to D.D between osteomyelitis and tumorosteomyelitis and tumor
It is not always possible.It is not always possible. Clinical history .Clinical history . Initial filmsInitial films Ct and MRI , may be better in D.D as they detect Ct and MRI , may be better in D.D as they detect
the lesion better.the lesion better. Biopsy is needed in some cases.Biopsy is needed in some cases.
![Page 16: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/16.jpg)
T.BT.B osteomyelitis osteomyelitis– Spine, followed by large joints.Spine, followed by large joints.– Produce large area of bone destruction.Produce large area of bone destruction.– May be asymptomatic in early changes. May be asymptomatic in early changes.
![Page 17: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/17.jpg)
Alteration of trabecular pattern of bone
![Page 18: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/18.jpg)
Paget’s disease Chronic progressive focal disease of bone.
Characterized by excessive resorption followed by excessive formation of bone, with abnormal bone remodeling.
The bone that is formed is abnormal, enlarged, and prone The bone that is formed is abnormal, enlarged, and prone to fractureto fracture.
This process results in extensive local vascularity and increased fibrous tissue in the bone marrow.
Involvement is usually polyostotic and asymmetric.
Sites of affection :- Pelvis, spine, skull, femur, and tibia.
![Page 19: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/19.jpg)
Paget’s disease Unknown aetiology Eldery patient
Clinical presentation:- Majority are asymptomatic and diagnosed as an
incidental finding Bone pain Fracture Deformity ( bowing ) of long bones
![Page 20: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/20.jpg)
Paget’s diseaseRadiological featuresLong bones:- Cortical thickning Sclerosis Coarsened trabecular pattern Increase size of the bone Bowing of long bone
![Page 21: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/21.jpg)
Paget’s diseaseDense sclerosis involving
the femoral head and neck .
This is a high-risk area for insufficiency fracture.
![Page 22: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/22.jpg)
Paget’s disease Late-stage Paget disease
reveals a transverse fracture through the proximal femoral shaft (banana fracture).
![Page 23: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/23.jpg)
Paget’s diseaseSkull :- A large lytic well defined area (osteoprosis
circumscripta).
![Page 24: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/24.jpg)
Paget’s disease
![Page 25: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/25.jpg)
Paget’s diseaseSkull :-
Many circumscribed patches of sclerotic bone in the calvarium giving a motteled appearance (cotton wool appearance).
![Page 26: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/26.jpg)
Paget’s disease Advanced Paget's
disease of the skull.
Thickened inner and outer tables, new bone deposition (cotton-wool patch(
![Page 27: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/27.jpg)
Paget’s diseaseSpine :- Picture Frame vertebral body
(enlarged square vertebral body with peripheral sclerosis and inner lucency).
![Page 28: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/28.jpg)
Paget’s diseaseSpine :- Densely sclerotic vertebral
body (ivory vertebra)
![Page 29: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/29.jpg)
Paget’s diseasePelvis :- Coarsened trabecular pattern Cortical thickning Enlargment of the pubis and ischium.
![Page 30: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/30.jpg)
Paget’s diseasePatchy sclerosis and
coarsened trabecula characteristic of late-stage Paget disease.
A fracture of the ischium inferior to the acetabulum (arrows) is present.
![Page 31: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/31.jpg)
Paget’s disease
Complications:- Pathological fracture Osteosarcoma
![Page 32: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/32.jpg)
Generalized decrease in bone density (osteopenia)
![Page 33: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/33.jpg)
Osteopenia is a nonspecific radiographic finding Osteopenia is a nonspecific radiographic finding that indicates increased radiolucency of bone .that indicates increased radiolucency of bone .
Bone density may be difficult to assess because Bone density may be difficult to assess because of technical factors (Kvp , mA)of technical factors (Kvp , mA)
![Page 34: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/34.jpg)
Causes of generalized decrease in bone density
(osteopenia)
Osteoprosis Osteomalacia Hyperparathyrodism Multiple myeloma
![Page 35: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/35.jpg)
Osteoprosis
Reduction of calcium content due to deficiency of osteoid (unmineralized portion of the bone matrix unmineralized portion of the bone matrix forms prior to the maturation of bone tissue ) forms prior to the maturation of bone tissue ).
Increase % of fractures especially in the vertebral bodies and hips.
![Page 36: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/36.jpg)
Causes of osteoprosis 1- Idiopathic :- Juvenile. Postmenopausal . Senile .
2- Cushing syndrome and steroid therapy.
3- D.M . 4- Arthritis.
5-Pregnancy.
6- Fracture.
![Page 37: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/37.jpg)
Osteoprosis
Clinical presentation:- Asymptomatic Bone pain Skeletal fracture
![Page 38: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/38.jpg)
Radiographic diagnosis Most commonly seen in the spine.
Overall decrease in bone density except the cortex still clear.
Collapse of the vertebral bodies , so they appearing as wedged or biconcave .
Widened of the intervertebral disc spaces , if Several vertebral bodies are affected.
In long bones, there is thinning of the cortices.
![Page 39: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/39.jpg)
Osteoprosis
![Page 40: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/40.jpg)
OsteoprosisAn osteoporotic spine, showing
compression fractures in the L1 and L3 vertebral bodies.
![Page 41: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/41.jpg)
OsteoprosisTwo views of the lumbar spine
taken 1 year apart demonstrate rapidly developing osteoporosis and multiple compression fractures .
![Page 42: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/42.jpg)
Ricketes Ricketes
![Page 43: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/43.jpg)
Ricketes
Rickets is a softening of bones in children leading Rickets is a softening of bones in children leading to fractures and deformityto fractures and deformity
Occur before epiphyseal closure., It is caused by It is caused by a failure of osteoid to calcifya failure of osteoid to calcify (unmineralized unmineralized portion of the bone matrix forms prior to the portion of the bone matrix forms prior to the maturation of bone tissue )maturation of bone tissue ).
![Page 44: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/44.jpg)
Ricketes Causes of rickets:- Dietery deficiency of vitamine D, or lack of
exposure to sunlight , resulting in decreased production of endogenous vitamine D which is important for absorption of calcium , resulting in resulting in hypocalcemiahypocalcemia
Malabsorption leading to impaired absorption of calcium or vitamine D.
Renal disease where rickets develops despite normal amount of vitamine D (vitamin D resistant rickets).
Chronic renal faliure .
![Page 45: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/45.jpg)
Ricketes Clinical picture :-Clinical picture :- Delayed growthDelayed growth Pain in the spine, pelvis and legsPain in the spine, pelvis and legs Bowed legsBowed legs Abnormally curved spineAbnormally curved spine
![Page 46: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/46.jpg)
Radiological features of ricketes
Commonly seen at the knee,wrists , and ankles.
Fraying and indistinct margins of the metaphysis, causing a cupped appearance
Increased distance between the visible epiphysis and calcified portion of metaphysis.
![Page 47: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/47.jpg)
Ricketes Bowing and curvature of the bones occur
because the undermineralized bone is soft
Bulbous enlargement of the anterior ends of the ribs producing a (ricketry rosary appearance ).
Greenstick fracture is common.
![Page 48: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/48.jpg)
Osteomalacia
![Page 49: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/49.jpg)
Osteomalacia
Occurs in adults due to failure of osteoid to calcify failure of osteoid to calcify .
![Page 50: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/50.jpg)
OsteomalaciaRadiological features Loss of bone density.
Thinning of the cortex.
Bone deformity due to bone softening e.g bowed of the femora and triradiate pelvis (bent inwards).
The vertebral bodies are biconcave.
![Page 51: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/51.jpg)
OsteomalaciaLooser’s zone (pseudofractures) :-Are short lucent bands running through the cortex
at right angles .may have sclertotic margin.
Location :- scapula , femoral necks and pubic rami.
![Page 52: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/52.jpg)
Ostomalacia
Losser’s zone in the femoral neck
![Page 53: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/53.jpg)
Generalized increase in bone density
![Page 54: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/54.jpg)
Generalized increase in bone density
Conditions that cause generalized increase in bone density :-
Sclerotic metastasis Osteopetrosis Myelosclerosis
![Page 55: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/55.jpg)
Osteopetrosis (marble bone disease)
Congenital disorder of bone formation . The bones are densely sclerotic . The bones are brittle and may fracture but heal
easily.
![Page 56: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/56.jpg)
Osteopetrosis
AP and lateral knee in a patient with osteopetrosis
![Page 57: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/57.jpg)
![Page 58: Bone infection Bone infection. Osteomylitis Definition:- inflammation of the bone or bone marrow caused by infection. Two types:- Pyogenic Pyogenic T.B](https://reader035.vdocuments.site/reader035/viewer/2022081420/5697bfd11a28abf838caafb9/html5/thumbnails/58.jpg)
Thank you