Introduction

  • OA is the most common form of arthritis and the most common joint disease
  • It can occur in any synovial joint; the common sites being the knees, hips & small hand joints.
  • Consequences of OA include pain, reduced function, & restriction in daily activities.
  • Management is made complex because structural changes can occur without the patient displaying any symptoms.

Definition

  • Carol David, 1999 – Definition of OA varies, but considered to be a chronic degenerative & progressive condition affecting synovial joint.
  • John Ebnezar, 2003 –  It is a degenerative, non-inflammatory joint disease characterized by destruction of articular cartilage & formation of new bone at the joint surface & margins.
  • Royal College of Physician, 2008 – OA refers to a clinical syndrome of joint pain accompanied by varying degrees of functional limitation & reduced quality of life.

Incidence

  • The most common reason of disability expect traumas.
  • First appears asymptomatically in the 2th and 3rd decades.
  • Incidence increases with age
    – population: 10%
    – 60 and above: 50%
    – 80 and above 90%
  • Usually onset in the 50s
  • Mostly occurs at the ends of the fingers, knees, and hips
  • Women are more commonly affected than men.

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