PT Exam- Tissue injury and healing

8 signs indicative of serious pathology

Name
First Last
At what percent of stretch do collagen fibers begin to fail?*
- 3 to 5%
- 6 to 8%
- 9 to 11%
Where on the stress strain curve do collagen fibers fail ?*
- Ultimate stress
- Necking
- Failure point
How much force is required to tear collagen fiber?*
- 5 to 15 kg/mm2
- 15 to 25 kg/mm2
- 25 to 35 kg/mm2
Rate of tissue healing (%)
first 2 weeks 2 to 6 weeks 3 months
Clot formation begins*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline
Capillary budding begins*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline
Fibroblast formation begins*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline
Muscle to skin wound closure complete*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline
Tendon and ligaments wound closure complete*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline
Scar tissue remains stretchable*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline
Scar tissue shrinkage completed*
Minutes Hours days weeks months

Tissue Healing and Scar Formation Timeline

first 2 weeks	2 to 6 weeks	3 months

Minutes	Hours	days	weeks	months

Minutes	Hours	days	weeks	months

Minutes	Hours	days	weeks	months