Week 3 Infection

Front 1

Osteomyelitis

Back 1

Destruction of bone often by an infection

-Most commonly bacteria

(Pyogenic- staphylococcus)

Other types include: TB, skeletal, fungal

Front 2

Radiographic findings of acute osteomyelitis

Back 2

-Cortical bone destruction (moth-eaten)

-New bone formation

-ST swelling & focal osteoporosis

Front 3

Codman's triangle

Back 3

-Area of new bone created after a lesion;

-Associated with a tumour (often malignant)

-Pseudo-triangle on radiograph

Front 4

Brodie's abscess

(sub-acute osteomyelitis)

Back 4

Pus-filled cavity surrounded by a wall of fibrous tissue

Usually found in metaphysis of long bones, Distal/proximal tibia, distal/proximal femur, radius

Front 5

Chronic osteomyelitis

Back 5

Unresolved osteomyelitis, most common in the tibia

Severe, persistant,recurring infection of bone marrow

Front 6

Majorlin's ulcer

Back 6

Aggressive, ulcerating squamous cell carcinoma

Chronic osteomyelitis --> Majorlin's ulcer

--> malignant degeneration of squamous cell lining of the cloaca

Front 7

Sequestra & Involucra

Back 7

Sequestrum= dead bone separated during necrosis

Involucra= new bone, allow for debris and exudates (creates better blood flow through the bone)

Front 8

Infectious arthritis

Back 8

-Result of a haematogenous seeding of synovial membrane from an infected source

Sub divided into;

-Pyogenic (septic) arthritis (Stephylococcal)

-Non-pyogenic arthritis (Mycobacterium TB)

Front 9

Tom Smith's arthritis

Back 9

-Affects joints that metaphysis within joint capsule

-Rapid development of osteomyelitis

-Large, lone bones are affected

-Can spread to epiphysis via synovial fluid

Front 10

Gas Gangrene

Back 10

Also known as 'clostridial myonecrosis' and 'Myonecrosis'

-Bacterial infection

-Produces gas in the tissue

-Medical emergency

Front 11

Tuberculosis (Non-pyogenic)

Back 11

-Insidious onset

-1st-3rd decade

-Stiffness, local pain, decreased ROM

-Thoraco-lumbar spine, knee, hip

Front 12

Tuberculosis spondylitis: Pott's disease

Back 12

Infection with Vertebral body & VD involvment

-Results in collapse of VB, results in kyphotic change, known as 'gibbus deformity'

Front 13

Cold abscess

Back 13

Late stage of TB, large paraspinal abscess is formed without severe pain

Caused by epidural granulation tissue and bony fragments (snowflakes), lead to cord compression

Front 14

Spider rib's

Back 14

TB spondylitis creates shortening in the Tx resulting with a deformity in the ribs

Front 15

Vertebra plana/pancake vertebra

Back 15

When a VB loses its height, representing a crush fracture. Caused by TB spondylitis, osteomyelitis

Front 16

Psoas abscesses

Back 16

(necrotic debris) frequently calcify in a snowflake

Front 17

Tubercular arthropathy

Back 17

-Inflammation without puss

-Commonly at the hip and knee

-Middle-aged

-Cartilage destruction and marginal erosion

Front 18

Phemister's triad (tubercular arthritis)

Back 18

1. Progressive and slow joint space narrowing

2.Juxta-articular osteopenia/osteoprosis

3.Peripheral erosive defects of the articular surface