0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
ARTICLE |

THE ETIOLOGY OF OSTEOPOROSIS: GUEST EDITORIAL

Marshall R. Urist, M.D.
JAMA. 1959;169(7):710-712. doi:10.1001/jama.1959.03000240048011.
Text Size: A A A
Published online

OSTEOPOROSIS, the most common disorder of the skeletal system, occurring chiefly in elderly persons, means literally an increased porosity of bone. This is to say that it refers to a decrease in the hard portions of bone substance in favor of a relative increase in the soft portions. It is commonly recognized as the end-result of loss in mass of the bones, ordinarily without any change in their volume or external configuration until pressures from without bring about collapse of the structures weakened from within.

The diagnosis of osteoporosis is usually based on radiographic evidence of collapsed vertebrae, expanded intervertebral disks, and thinning of the cortex of the bones. Attention is frequently called to the condition by the pain and deformity incident to collapse of the vertebral bodies, or to pathological fractures in the spine; routine laboratory procedures give little information.

The pathogenesis of this disorder is a subject of

Topics

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview

Figures

Tables

References

CME
Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.

Multimedia

Some tools below are only available to our subscribers or users with an online account.

222 Views
0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
×
brightcove.createExperiences();