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Knee Replacement Updated 4/2010

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BASICS

  • Description
  • Epidemiology
  • Risk Factors
  • Etiology
  • Associated Conditions

DIAGNOSIS

  • Signs and Symptoms
  • Tests
  • Differential Diagnosis

TREATMENT

  • General Measures
  • Special Therapy
  • Medication (Drugs)
  • Surgery

Ongoing Care

  • Disposition
  • Prognosis
  • Complications
  • Patient Monitoring
The following is an excerpt....
BASICS
Description
  • Total knee arthroplasty—resurfacing of the articular surfaces of the knee with metal and interposed plastic liner—is a highly effective treatment for patients with disabling knee arthritis.
  • The components are shaped to conform to the previous joint geometry.
  • Classification is by involved compartment.
    • Medial compartment (tibial femoral)
    • Lateral compartment (tibial femoral)
    • Patellofemoral
Epidemiology
Incidence
  • 61% of total knee replacements occur in females (1).
  • In 2003, 418,000 surgeries were performed in the United States (2).
    • The number of knee replacements performed per year continues to rise.
    • Patients had an average age of 67 years at the time of replacement.
Risk Factors
  • Trauma
  • Meniscectomy
  • Obesity
Etiology
  • Osteoarthritis: Often idiopathic
  • Posttraumatic: Athletic injuries, falls, motor vehicle accidents
  • Inflammatory arthritis ...

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See Also
Images >
CT scan showing pneumothorax in patient with COPDCredit: Richard H. Daffner, Clinical Radiology The Essentials, 3rd Edition. Philadelphia: Lippincott Williams & Wilkins, 2007