Biaxial joint

{{short description|Bodily joint which allows movement in two anatomical planes}}

{{notability|date=May 2023}}

In anatomy, a biaxial joint is a freely mobile joint that allows movement in two anatomical planes.{{cite journal |title=ANATOMY & PHYSIOLOGY: Classification of Joints |url=https://pressbooks-dev.oer.hawaii.edu/anatomyandphysiology/chapter/classification-of-joints/ |website=Pressbooks |publisher=OpenStaxCollege |access-date=3 June 2023 |date=March 6, 2013}} An example of a biaxial joint is a metacarpophalangeal joint of the hand.{{cite web |last1=Shaw |first1=Will |title=Biaxial Joints Explained |url=https://sportscienceinsider.com/biaxial-joints/ |website=sportscienceinsider.com |publisher=Sport Science Insider |access-date=3 June 2023 |date=January 18, 2023}} The joint allows for movement along one axis to produce bending or straightening of the finger, and movement along a second axis, which allows for spreading of the fingers away from each other and bringing them together.{{CC-notice|cc=by4|url=https://openstax.org/books/anatomy-and-physiology/pages/9-1-classification-of-joints}}{{cite book|last1=Betts|first1=J Gordon|last2=Desaix|first2=Peter|last3=Johnson|first3=Eddie|last4=Johnson|first4=Jody E|last5=Korol|first5=Oksana|last6=Kruse|first6=Dean|last7=Poe|first7=Brandon|last8=Wise|first8=James|last9=Womble|first9=Mark D|last10=Young|first10=Kelly A|url=https://openstax.org/books/anatomy-and-physiology/pages/9-1-classification-of-joints|title=Anatomy & Physiology|location=Houston|publisher=OpenStax CNX|isbn=978-1-947172-04-3|date=2013|access-date=May 14, 2023|at=9.1 Classification of Joints}}