Endocrinology Book

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Upper to Lower Segment Ratio

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  1. Indications
    1. Growth Assessment
    2. Assessment for collagen bone disease
  2. Measurement
    1. Upper segment: Top of head to top of pubic symphysis
    2. Lower segment: Top of pubic symphysis to floor
  3. Normal upper to lower ratio
    1. Birth upper to lower ratio: 1.70 (Greatest ratio)
    2. Postpuberty upper to lower ratio: 0.89 - 0.95

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