Boutonniere deformity
You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.
| Boutonniere deformity Classification and external resources | |
 | |
|---|---|
| Human hand bones (Joints visible but not labeled.) | |
| ICD-10 | M20.0 |
| ICD-9 | 736.21 |
| eMedicine | orthoped/24 |
Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [1] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2] Phone:617-525-6884
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [3] Phone:617-525-7431
Please Join in Editing This Page and Apply to be an Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [4] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.
Overview
Boutonniere deformity refers to a finger which is bent in a particular way: bent toward the palm at joint nearest the knuckles, and bent back away from the palm at the joint furthest from the knuckles (hyperflexion at the proximal interphalangeal joint with hyperextension at the distal interphalangeal joint.
Causes are injury, inflammatory conditions like rheumatoid arthritis.
Stages
- Mild extension lag, passively correctable
- Moderate extension lag, passively correctable
- Mild flexion contracture
- Advanced flexion contracture
Higher numbers indicate a more severe problem and greater likelihood of a poor final outcome
Pathophysiology
This is a flexion deformity of the proximal interphalangeal joint, due to interruption of the central slip of the extensor tendon. This makes it difficult or impossible to extend the proximal interphalangeal joint. The lateral slips separate and the head of the proximal phalanx pops through the gap like a finger through a button hole and the distal joint is drawn into hyperextension. It is often seen with trauma or rheumatoid arthritis.
External links
- Duke Orthopedics boutonniere_deformity_of_the_thumb_mp_joint
- http://medicine.ucsd.edu/clinicalimg/upper-hand-boutonniere.html
- http://www.merck.com/mmpe/sf/multimedia/Photo2sec04ch34/t/sec04-ch034-ch034b.html
References
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
