oa progression

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© OAISYS Incorporated 2013 Starts with damage of a highly loaded part Focal wear then painful symptoms Pain and inactivity -- diet changes Increasing weight -- increasing load Inactivity weakens cartilage, bone, ligaments and muscles with more loss of support Localized wear changes alignment and adds further to load and increasing damage. Vicious cycle: increase load -> decrease use = more Vicious cycle: increase load -> decrease use = more damage damage How Does Knee OA How Does Knee OA Progress? Progress?

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Page 1: Oa progression

© OAISYS Incorporated 2013

Starts with damage of a highly loaded part

Focal wear then painful symptoms

Pain and inactivity -- diet changes

Increasing weight -- increasing load

Inactivity weakens cartilage, bone, ligaments and muscles with more loss of support

Localized wear changes alignment and adds further to load and increasing damage.

Vicious cycle: increase load -> decrease use = more damage Vicious cycle: increase load -> decrease use = more damage

How Does Knee OA Progress?How Does Knee OA Progress?

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Can we porgressivley change the colour to the dark red
Page 2: Oa progression

© OAISYS Incorporated 2013

Speeds Up Inactivity

Excessive load

Weight gain

Delaying treatment

Slows Down Keeping mobile and strong

Modifying loading activity

Weight loss

Early treatment

Factors Affecting ProgressionFactors Affecting Progression

Page 3: Oa progression

© OAISYS Incorporated 2013

Mild varus Mild varus Grade 2 damageGrade 2 damageJoint Replacement Joint Replacement not indicatednot indicated

Marked varus Marked varus Grade 8 damageGrade 8 damageJoint Replacement Joint Replacement indicatedindicated

Page 4: Oa progression

© OAISYS Incorporated 2013

What the surgeon seesHealthy

ProgressionProgression