KNEE ASPIRATION

KNEE INFECTIONS

Synovial fluid:

Normal: <200 WBC’s, <25% polys, gram stain -Noninflammatory : <2000 WBC’s, <25% polys, gram stain –Inflammatory: 5000-75000 WBC’s, 50-75% polys, gram stain –Septic: >50000 WBC’s, >75% polys, gram stain +/-Hemorrhagic: similar to normal blood levels, gram stain -

CHRONIC KNEE PAIN

What is Osteoarthritis?

• Cartilage deteriorates and friction is created between bone surfaces.

• Symptoms include:– Chronic knee pain– Knee stiffness– Difficulty with everyday

activities (walking, driving, stair climbing)

SYMPTOMS OF ARTHRITIS

Pain!InstabilityLockingSwelling

CLINICAL FINDINGS - ARTHRITIS

DIAGNOSIS OF ARTHRITIS

DIAGNOSIS OF ARTHRITIS