Bone density

Jump to: navigation, search

WikiDoc Resources for Bone density

Articles

Most recent articles on Bone density

Most cited articles on Bone density

Review articles on Bone density

Articles on Bone density in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Bone density

Images of Bone density

Photos of Bone density

Podcasts & MP3s on Bone density

Videos on Bone density

Evidence Based Medicine

Cochrane Collaboration on Bone density

Bandolier on Bone density

TRIP on Bone density

Clinical Trials

Ongoing Trials on Bone density at Clinical Trials.gov

Trial results on Bone density

Clinical Trials on Bone density at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Bone density

NICE Guidance on Bone density

NHS PRODIGY Guidance

FDA on Bone density

CDC on Bone density

Books

Books on Bone density

News

Bone density in the news

Be alerted to news on Bone density

News trends on Bone density

Commentary

Blogs on Bone density

Definitions

Definitions of Bone density

Patient Resources / Community

Patient resources on Bone density

Discussion groups on Bone density

Patient Handouts on Bone density

Directions to Hospitals Treating Bone density

Risk calculators and risk factors for Bone density

Healthcare Provider Resources

Symptoms of Bone density

Causes & Risk Factors for Bone density

Diagnostic studies for Bone density

Treatment of Bone density

Continuing Medical Education (CME)

CME Programs on Bone density

International

Bone density en Espanol

Bone density en Francais

Business

Bone density in the Marketplace

Patents on Bone density

Experimental / Informatics

List of terms related to Bone density

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Bone density is a medical term referring to the amount of matter per cubic centimeter of bones. It is measured by a procedure called densitometry, often performed in the radiology or nuclear medicine departments of hospitals or clinics. The measurement is painless and non-invasive and involves minimal radiation exposure. Measurements are most commonly made over the lumbar spine and over the upper part of the hip. The forearm is scanned if either the hip or the lumbar spine can't be.

Indication

The most common reason for measuring bone density is to screen for, or diagnose, osteoporosis.

Interpretation

Results are often reported in 3 terms:

  1. Measured density in g/cm3
  2. Z-score, the number of standard deviations above or below the mean for the patient's age and sex
  3. T-score, the number of standard deviations above or below the mean for a healthy 30 year old adult of the same sex as the patient

Limitations

The technique has several limitations.

  1. Measurement can be affected by the size of the patient, the thickness of tissue overlying the bone, and other factors extraneous to the bones.
  2. Bone density is a proxy measurement for bone strength, which is the resistance to fracture and the truly significant characteristic. Although the two are usually related, there are some circumstances in which bone density is a poorer indicator of bone strength.
  3. Reference standards for some populations (e.g., children) are unavailable for many of the methods used.
  4. Crushed vertebrae can result in falsely high bone density so must be excluded from analysis.