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Postmortem changes

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Livor mortis
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Postmortem changes

  1. 1. Postmortem changes 1
  2. 2. Forensic Taphonomy (“taphos”=grave ; “nomos”=law) 2
  3. 3. Signs of death  INSENSIBILITY & LOSS OF VOLUNTARY P  CESSATION OF RESPIRATION  CESSATION OF CIRCULATION 3
  4. 4. 4
  5. 5. 5
  6. 6. Postmortem lividity (/staining/hypostasis) (LIVOR MORTIS/SUGGILATION/VIBICES) (D) 6
  7. 7. 7
  8. 8. TIME OF APPEARANCE: DISTRIBUTION: OCCURENCE TIME APPEARANCE in small patches(1-2 cm in diameter )  1-2 hrs in plethorics .  1-4 hrs in anemics . WELL-MARKED 4-6 hrs FIXATION 6-8 hrs POSTURE SITES SUPINE NECK ENTIRE BACK FLANKS & SIDES OF NECK . PRONE  LOOSE CONNECTIVE TISSUE IN FRONT(COLOR IS INTENSE) & TARDIEU SPOTS ARE COMMON .  CONGESTION NASAL BLEEDING LYING ON ONE SIDE BLOOD WILL SETTLE ON THAT SIDE . INVERTED(DRUNKEN)  HEAD & NECK .  CONJUNCTIVAL HEMORRHAGE . UPRIGHT(HANGING) LEGS,EXTERNAL GENITALIA , LOWER PART OF FOREARM , HAND. DROWNING FACE , UPPER CHEST , HANDS , LOWER ARMS , FEET & 8
  9. 9. 9
  10. 10. Cadaveric spasm 10
  11. 11. Rigor mortis 11
  12. 12. 12
  13. 13. 13
  14. 14. MOLECULAR MECHANISM OF CONTRACTION IN RIGOR MORTIS CONDITION 14
  15. 15. ALGOR MORTIS(COOLING OF BODY) 15
  16. 16. POST MORTEM CALORICITY 16
  17. 17. 17
  18. 18. DECOMPOSITION 18
  19. 19. STAGES OF PUTREFACTION 19
  20. 20. Adipocere formation 20
  21. 21. SKELETONISATION 21
  22. 22. Mummification 22
  23. 23. BIBLIOGRAPHY 23
  24. 24. 24
  25. 25. 25

Editor's Notes

  • A) Post-mortem hypostasis in a posterior distribution.
    Areas of pallor can be seen as a result of pressure of the body
    on a firm surface, whereas parts of the body not in direct contact
    with that surface are purple/ pink because of the ‘settling of blood
    under gravity’. This body has been lying on its back since death.
    B) Post-mortem hypostasis pattern on the front of a
    body found face down on a bed. The linear marks are formed
    by pressure from creases in a blanket. Pallor around the
    mouth and nose are caused by pressure against the bed and
    do not necessarily indicate marks of suffocation.
    C) Post-mortem hypostasis distribution following
    hanging. Note the skin discoloration is in the legs and hands
    because of the vertical body position after death and the
    green discoloration in the right iliac fossa region.
  • FIG : Cadaveric rigidity – a rare post-mortem finding
    that may be seen in bodies recovered from water, where
    vegetation is found tightly ‘gripped’ in the hand.
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