Scar

Question 1

What is scar

Answer 1

Aka cicatrix

Fibrous tissue covered by epithelium

Consequences of healing of a deep wound

Only of dermis or deeper layer involved

Question 2

Characteristics

Answer 2

Fibrous tissue

A of ET

A of SG

A of HF

Hypo hyper pigmented

Maybe flat or raised

Question 3

Causation

Answer 3

Correspond to the size and shape of injury
Extent of injury and weapon responsible can be known

In incised wound - Linear or elliptical scar.

Firearm circular depressed scar

Laceration wide irregular

Burns keloid scar

On soft part like scrotums and axilla irregular

Infection thick in middle

Question 4

Destruction

Answer 4

By injury burns surgery plastic surgery

Question 5

Examination of latent scar

Answer 5

Rubbing and massaging - inc vascularity and contrast

Heating

Tourniquette

In UV lights

Microscopy examination for ET and FT

Question 6

Age

Answer 6

With time scar becomes pale and white non tender hard and glistening

Reddish 5-6 days

Vascular pale white 2wk 2months

Tender to non tender 2-6 months

Soft to hard and glistering after 6 months

Question 7

Medicolegal aspect

Answer 7

Permanent imp for identification

Age

Weapon

Extent of injury can be known

Fibrous so resist decomposition

In drug addicts linear needle track scar

Also in syphills pregnancy BCG

On neck wrist due to incision attempted suicide