Carpometacarpal bossing

Visible growth caused by carpometacarpal bossing.

Carpal boss VR-3D-Reconstruction

Carpometacarpal bossing or Metacarpal is a small, immovable mass of bone on the back of the wrist. The mass occurs in one of the joints between the carpus and metacarpus of the hand, called the carpometacarpal joints, where a small immovable protuberance^[1] occurs when this joint becomes swollen or bossed.

Clinical significance

The carpometacarpal joint is usually found at the base of the second and third metacarpal bones at the point where they meet the small bones of the wrist.^[2] This condition can result in sensitivity in the immediate area and/or an unsightly bulge on the back of the hand. In most cases, the boss does not result in any injury or further problems, but in some cases, the patient may feel pain, aching, or even possibly a slight lack of mobility in the wrist joint.^[3] Often, this condition will be mistaken for a ganglion cyst due to its location and external appearance.

A carpometacarpal boss may exist from birth or may be the result of a trauma or injury in the affected area. There are also indications that those with careers involving repetitive movements in the hands and fingers may develop this condition. Typically, this condition will begin to show itself in the 3rd or 4th decade.^{[citation needed]}

Additional images

Second metacarpal bone   Third metacarpal bone   Carpal boss in in plain X-Ray.   Carpal boss in CT.

References

1. ^ Conway, William F. et al. (1984). "The Carpal Boss: An Overview of Radiographic Evaluation". Radiology 156 (156): 29–31. PMID 3923555. http://radiology.rsnajnls.org/cgi/reprint/156/1/29.pdf. Retrieved February 2010. 
2. ^ Walker, Lorenzo G.. "Carpometacarpal Boss". The Hand Center of Ventura County. http://www.handoc.net/carpoletacarpal%20boss.htm. Retrieved February 2010. 
3. ^ Kamath, B. Jagannath; Bhardwaj, Praveen. "Carpal Bossing With Trapezium-Trapezoid Fusion". The Internet Journal of Orthopedic Surgery 4 (2). http://www.ispub.com/ostia/index.php?xmlFilePath=journals/ijos/vol4n2/carpal.xml. Retrieved February 2010. 

External links

• Mennen, Ulrich (May 2004). "“Bossing” of the second and third Carpo-Meta-Carpal joint". Electronic Doctor. http://www.edoc.co.za/modules.php?name=News&file=article&sid=527. Retrieved February 2010. 
• Carpometacarpal Boss (includes diagrams)
• About.com: Orthopedics - Bossing
• Carpal Boss: An Overview of Radiographic Evaluation
• The Internet Journal of Orthopedic Surgery
• Electronic Doctor
• eMedicine from WebMD

This medical sign article is a stub. You can help Wikipedia by expanding it.v · Categories: Upper limb anatomy Medical sign stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем сделать НИР 2001 Pitch and putt European Championship 2003 Pitch and putt European Championship Look at other dictionaries: Carpometacarpal joint — Infobox Anatomy Name = Carpometacarpal joint Latin = articulationes carpometacarpeæ GraySubject = 88 GrayPage = 330 Caption = Ligaments of wrist. Posterior view. Caption2 = Width = 300 System = MeshName = MeshNumber = The carpometacarpal joint is …   Wikipedia Metacarpal boss — Metacarpal Bossing is a small, immovable mass of bone that is usually found at the base of the 2nd and 3rd metacarpal bones where they meet the small bones of the wrist. This condition can result in sensitivity in the immediate area and/or an… …   Wikipedia Metacarpus — Bone: Metacarpals The five metacarpal bones, numbered. (Left hand shown with thumb on right.) …   Wikipedia Ganglion cyst — Infobox Disease Name = PAGENAME Caption = Cyst on right wrist DiseasesDB = 31229 ICD10 = ICD10|M|67|4|m|65 ICD9 = ICD9|727.4 ICDO = OMIM = MedlinePlus = eMedicineSubj = orthoped eMedicineTopic = 493 A ganglion cyst (also known as a bible bump) is …   Wikipedia Swelling (medical) — SignSymptom infobox Name = Swelling ICD10 = R22 ICD9 = ICD9|782.2, ICD9|784.2, ICD9|786.6, ICD9|789.3 In medical parlance, swelling is the enlargement of organs caused by accumulation of excess fluid in tissues, called edema. It can occur… …   Wikipedia Hand surgery — The field of hand surgery deals with both surgical and non surgical treatment of conditions and problems that may take place in the hand or upper extremity (commonly from the tip of the hand to the shoulder). Hand surgery may be practiced by… …   Wikipedia Carpal boss — Klassifikation nach ICD 10 M19.8 Sonstige näher bezeichnete Arthrose …   Deutsch Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”