How To Guide by mikeholy

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									Bone Measurement

 “How To” Guide
      2 ways to measure bones
• Measure lengths and widths

• Measure angles
                              Inside Measurement
                                   Nasal Width
                            • Measure at widest spot




Measuring with calipers – inside measurements
• place calipers inside space
• spread out until touch both edges of object
• read bottom row labeled ‘inside’
Reading Calipers: Inside Measurement
                                  Second # is the first spot
                                  bottom and top lines
                                  match up. Read as a
                                  decimal. = .1

                                       Measurement
                                           40.1 mm


                                       First # is where
                                       0 lines up. = 40
You try…
What is the inside measurement reading?

                                   Answer:
                                   35.1mm
 Nasion                      Outside Measurement
                                 Nasal Height
Nasal spine                  • Nasion to Nasal Spine



  Measuring with calipers – outside measurements
  • place calipers on outside of area
  • bring in until touch both edges of object
  • read top row labeled ‘outside’
Reading Calipers: Outside measurement
                                          First # is where
                                          0 lines up. = 40




                                           Measurement
                                               40.1 mm



                                        Second # is the first
                                        spot bottom and top
                                        lines match up. Read
                                        as a decimal. = .1
You try…
What is the outside measurement reading?



                                  Answer:
                                  10.1mm
 Measurement with a protractor

                          2. 0 line along one side of angle

1. Dot directly under 90 at vertex
 of angle

3. Measurement value where
 angle’s other side crosses
 protractor


   Answer: 120 degrees
 You try….
What is the measurement of
this angle?


  Answer: 70 degrees
Pelvic measurement: sub-pubic angle
• dot of protractor on pubic
  symphysis where bones meet



                                       Pubic symphysis   ramus of
                                                         L. ischium


                                   • 0 line along ramus of
                                     left ischium



  • read measurement on ramus of       Answer: 77 degrees
    right ischium
Sources

Ward’s Natural Sciences. 2002. Sherlock Bones: Identification of skeletal remains.
p.10,11,12, 16, and pelvis, skull

								
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