Tissue Healing Flashcards Preview

PHYT3001 > Tissue Healing > Flashcards

Flashcards in Tissue Healing Deck (11):
1

Bone healing

• Inflammatory stage- 3-7 days; haematoma formation (inflammation); osteocytes around fracture killed; osteoclasts & macrophages remove dead tissue; osteoblasts used for repair
• Reparative stage- callus formation (weeks 2-3= soft, 4-16= hard); bone ends united by woven bone; less rigid than normal bone
• Remodelling stage- months to years; bone callus replaced with mature bone; marrow cavity restored; bone contour smoothed; strength maintained with less material

2

Tissue healing- EPITHELIAL

• Haemostasis- immediately following injury; vasoconstriction; platelets cluster to begin clotting
• Inflammation- 0-3 days; antibodies, WBC, growth factors, enzymes and nutrients taken to site
• Proliferation-3-21 days; granulation occurs (red & bumpy layer); skin regrowth occurs; nearby epithelial cells migrate; bright red thick scar
• Maturation- weeks to months; remodelling continues; strength regained

3

Muscle healing

• Initial haemorrhage
• 1-2 days = inflammatory response
• ~7, inflammation replaced with fibrous tissue
• Scar tissue never >80% strength of original tissue
• Repair involves: regeneration & production of connective scar tissue

4

Nerve repair sequence

1. Schwann cell proliferation
2. Axonal swelling, sprouting and spreading
3. Sprout enters endoneurial tube and grows distally
4. Contact occurs with end organ
5. Schwann cell synthesises myelin sheath
6. Near-normal nerve conduction

5

Optimising inflammatory and repair stages:

Medications
• Cryotherapy
• Immobilisation
• Mobilisation
• Compression/elevation
• Electrotherapy

6

Management acute phase of soft tissue: 0-72 hrs

• Protect injured area
• Limit swelling
• Control pain
• Diagnosis/referral?

7

Management techniques in acute:

• RICER
• Brace/support
• Electrophysical agents
• Gait aids
• Isometric contractions
• Early active movements- especially with muscle
• Co-contraction exercises
• Analgesics/NSAID

8

Management aims of soft-tissue injuries during sub-acute (repair) phase: 48hrs to 6 weeks

• Protect healing tissue
• Facilitate remodelling
• Restore normal function
• Begin reconditioning
• Progress to normal function

9

Management strategies repair phase

• Brace and support
• Massage
• EPA’s
• Joint mobilisations
• Exercise- isometric >>isotonic>>resistance>>open & closed kinetic exercises>>proprioception + CV fitness

10

Management chronic phase: 3 weeks to 12 months

• Return to function with < chance reinjury
full strength/control/endurance
full Rom
nornal proprioception
correct muscle balance
s and s free

11

Management strategies chronic phase:

• Exercise program
• Functional activities
• Fitness