CHE 113 1 FORENSIC ANTHROPOLOGY A Very Brief Overview CHE 113.
-
Upload
osborn-ashley-holland -
Category
Documents
-
view
217 -
download
2
Transcript of CHE 113 1 FORENSIC ANTHROPOLOGY A Very Brief Overview CHE 113.
CHE 113 1
FORENSIC ANTHROPOLOGYA Very Brief Overview
CHE 113
CHE 113 2
Forensic AnthropologyBrief Overview
•Defined as “the field of study that deals with the analysis of human skeletal remains resulting from unexplained deaths.”•Often done in a legal context•An applied science•Five subdisciplines:
•1. Biological, or physical anthropology •2. Archaeology•3. Cultural anthropology•4. Linguistics•5. Applied anthropology
CHE 113 3
Forensic AnthropologyGoal: Biological Profile
Includes:1. General Description2. Sex of decedent3. Age of decedent4. Ancestry of decedent5. Stature of decedent6. Assessment of trauma
(ante-, peri-, post mortem)7. Pathologies noted
CHE 113 4
Osteology: study of skeletal remainsEach bone studied INDIVIDUALLY
206 Skeletal Bones (total)
CHE 113 5
Osteology: study of skeletal remainsEach bone studied INDIVIDUALLY
CHE 113 6
Osteology
Human bone –vs- Animal bone
Macroscopic differencesRadiology ObservationMeasurement
Microscopic differences
CHE 113 7
Osteology
CHE 113 8
Osteology
CHE 113 9
Macroscopic differences
Baboon femur Human femur
CHE 113 10
Microscopic differences
Spongy bone
human
mouse
CHE 113 11
Osteology
Radiographs
CHE 113 12
Information from skeletal remains Sex of decedent
Hip bone FemurSkull
CHE 113 13
Information from skeletal remains Sex of decedent
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
CHE 113 14
Information from skeletal
remains Sex of decedent
MALE OR FEMALE MALE OR FEMALE SKELETON?SKELETON?
(a) IS FEMALE and (a) IS FEMALE and (b) IS MALE(b) IS MALE
Handout
CHE 113 15
Information from skeletal
remains Sex of decedent
MALE OR FEMALE MALE OR FEMALE SKELETON?SKELETON?
(a) IS FEMALE and (a) IS FEMALE and (b) IS MALE(b) IS MALE
Male
Female
CHE 113 16
Information from skeletal remains Sex of decedent
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
CHE 113 17
What can we learn from skeletons? Age at Death
Hip bone most useful for adults
Teeth: Erupted or Not?
Estimate given as a range (30 – 35 yrs old)
Epiphyses: fused or unfused?
Pubic symphysis
Auricular surface
CHE 113 18
Age at DeathLong Bone Development
CHE 113 19
Age at Death
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
CHE 113 20
Age at Death
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
CHE 113 21
Odontology – Forensic Dentistry
Teeth also studied
Deciduous –vs- Permanent
Forensic Dentistry• At the scene of the crime, odontologists collect the skull or
remaining teeth, which are taken back to the forensic laboratory for the postmortem dental investigation. X-rays are taken and if the jaw is completely intact and the dental
records used to compare are recent, the job of proving a match is a relatively simple one. Dentists mark on a chart the position of missing teeth, crowns, bridges, fillings, caps, root canals and various other treatments during a patient's routine check-
up. The task of identifying a victim is made more difficult when the dentist records and x-rays are out of date or when the skull is severely damaged and has parts missing. CHE 113 22
CHE 113 23
CHE 113 24
Age at Death
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
Use of Forensic DentistryForensic odontologists or in other words, forensic dentists,
have the job of examining dental evidence that is left behind after a crime has been committed. Teeth are an excellent source of identification, as they hard wearing and durable. With the ability to survive fires that destroy evidence, burn human bones to ashes and melt copper and glass, teeth are able to withstand criminal's attempts to hide the crimes they've committed and the evidence held within the crime scene and dental analysis provides a cost efficient alternative to solving a crime.
CHE 113 25
Ted Bundy’s Teeth
CHE 113 26
CHE 113 27
CHE 113 28
Epiphyses - A part of bone separated from the main body of the bone by a layer of cartilage and
subsequently uniting with the bone through further ossification
Unfused = juvenile
Fused = adult
CHE 113 29
Spine
CHE 113 30
More info from skeletal remains
ANCESTRY of decedent
Difficult determination to make
Facial bones most important
Nasal aperture
TeethInterorbital space
Mandible
CHE 113 31
Stature estimate
Measure long bone(s) available
Plug in value to formula
Range established for stature of decedent
5’ 2” – 5’ 5”
CHE 113 32
Other information TRAUMA and PATHOLOGIES
Ante- mortem Post-mortem Peri-mortem
Gunshot
CHE 113 33
Trauma
CHE 113 34
Individual IdentificationPerson identified when it was found that the amalgam used in her dental restorations was of a type found only in specific areas on the Eastern Coast of the United States.
Habitual activity can wear away the protective, cartilagenous lining which reduces friction in joints. The humerus in this photograph were in contact for many years prior to this individual's death. The surfaces are smooth and shiny, indicating that the joint capsule and cartilage had worn away, allowing bone on bone contact in the cavity.
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
CHE 113 35
Individual IdentificationDental implants, braces, and other types of dental work are often recovered with a body and are extremely useful in identification because they are so unique to the individual and are well detailed in antemortem radiographs and medical records.
Healed fracture on the sternal end of a midthoracic rib. The area within the red brackets is the site of injury. Note the more porous appearance of the bone in this area - this is woven bone.
http://medlib.med.utah.edu/kw/osteo/forensics/sasta.html
CHE 113 36
Case Study
September 1999 Tourist Aircraft Crash on the Big Island of Hawaii
From Prof. Ann BunchSUNY Oswego
CHE 113 37
Big Island Aircraft Crash
Piper Aircraft with 9 passengers, 1 pilot
CHE 113 38
Big Island Aircraft Crash
Aircraft’s path prior to crash & location of crash
CHE 113 39
Big Island Aircraft Crash
NTSB determination of cause = pilot error
CHE 113 40
Big Island Aircraft Crash
CHE 113 41
Big Island Aircraft Crash
CHE 113 42
Big Island Aircraft Crash
Document remains present
CHE 113 43
Big Island Aircraft Crash
X-ray all remains/Possible remains
CHE 113 44
Big Island Aircraft Crash
CHE 113 45
Big Island Aircraft Crash
Personal effects and identification
CHE 113 46
Big Island Aircraft Crash
Identification “by exclusion”
Osteoarthritis
CHE 113 47
Big Island Aircraft Crash
CHE 113 48
Big Island Aircraft Crash
Sorting out commingling
CHE 113 49
Other Types of Evidence
Wreckage fragments
Wreckage in situ
Race Determination Activity
CHE 113 50
CHE 113 51
CHE 113 52
CHE 113 53
CHE 113 54
CHE 113 55