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Understanding Tissue Healing and Repair Mechanisms: A Comprehensive Guide

Dive into the intricate world of tissue healing and repair mechanisms, exploring various injury classifications, soft tissue injuries, muscle bruises, sprains and strains grading, and the phases of soft tissue healing. Gain insights into skin tissue, tendons, ligaments, muscles, bones, fractures, nerve injuries, and their classifications.

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Understanding Tissue Healing and Repair Mechanisms: A Comprehensive Guide

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  1. Tissue Healing and Repair Chapter 5 or 6

  2. Injury Mechanisms • Force and Its Effects • Load • Deformation • Yield Point • Elastic Limit

  3. Forces • Axial Force • Compressive Force • Tensile Force • Shear Force • Stress

  4. Skin Tissue • Epidermis • Dermis • Subcutaneous Layer

  5. Skin Injury Classification • Abrasions • Blisters • Skin Bruises • Incisions • Lacerations • Avulsions • Punctures

  6. Tendons, Ligaments, and Aponeuroses • Tendons • Connect muscle to bone • Ligaments • Connect bone to bone • Made up primarily of collagen and elastin

  7. Muscles • Epimysium • Perimysium • Endomysium • Fasciculus • Muscle Fibers • Myofibrils

  8. Soft Tissue Injury Classification • Contusions (1st, 2nd, 3rd degree) • Ecchymosis (Superficial bleeding) • Hematoma (Hardening of the blood) • Strains (1st, 2nd, 3rd degree) • Sprains (1st, 2nd, 3rd degree) • Cramps and Spasms • Myositis and Faciitis

  9. Soft Tissue Injury Classification cont. • Tendinitis and Tenosynovitis • Myositis Ossificans • Calcific Tendinitis • Bursitis

  10. Muscle Bruises- Grading • 1st degree- Little or no range of motion loss. • 2nd degree- Noticeable loss or range of motion. • 3rd degree- Severe restriction of range of motion. Fascia may be ruptured causing muscle tissue to protrude.

  11. Sprains and Strains Grading • 1st degree- Limited pain, only microtearing of the collagen fibers, no loss of function. • 2nd degree- More intense pain, partial tearing of the tissue, joint instability and muscle weakness. • 3rd degree- Severe pain, complete tearing, loss of ROM, complete instability.

  12. Soft Tissue Healing • Inflammatory Phase (0-6 days) • Proliferation Phase (3-21 days) • Regeneration and Maturation Phase (up to 1+ year)

  13. Bones • Calcium Carbonate • Calcium Phosphate • Collagen • Water

  14. Fractures Closed Compounded Transverse Comminuted Oblique Epiphyseal Spiral Greenstick Avulsion Impacted Depressed Bone Injury Classification

  15. Nerves • Afferent Nerves (Affectors) • Efferent Nerves (Effectors)

  16. Nerve Injury Classification • Tensile forces cause stretching of the nerve fibers. • Grade I: Neurapraxia: temporary loss of sensation and/or motor function. • Grade II: Axonotmesis: significant motor and mild sensory losses. • Grade III: Neurotmesis: motor and sensory losses persisting for up to one year.

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