We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
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 ......
Case Reports |


Am J Dis Child. 1937;53(1_PART_I):128-131. doi:10.1001/archpedi.1937.04140070139010.
Text Size: A A A
Published online


Radio-ulnar synostosis (or synosteosis) is generally considered a rare, congenital abnormality, manifested by marked impairment in supination of the forearm due to fusion of the upper end of the radius with that of the ulna. Males are affected about twice as frequently as females, and in approximately 50 per cent of the cases the condition is bilateral.

In 1932 Fahlstrom1 collected reports of 185 cases from the literature (including that of his own case). The condition was apparently first described by Sandifort,2 in 1793. Salisachs3 in 1934 reviewed 195 published reports of cases. Since that time, 5 additional cases4 have been reported, making a grand total of 200. An analysis shows that 113 males and 64 females were affected; in 23 cases the sex was not mentioned. The condition was bilateral in 113 patients and unilateral in 83. The left forearm was involved in 43 and


Sign in

Purchase Options

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

First Page Preview

View Large
First page PDF preview





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.


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

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.