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(Source: http://www.google.co.in/search?hl=en&q=Elbow+joints&bav=on.2,or.r_gc.r_pw.r_qf.&\biw=
1341&bih=581&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=m2Q8UNzGMIjNrQeMr4D
ICw ; Aug. 28, 2012
http://www.google.co.in/search?hl=en&q=Elbow+Joints&bav=on.2,or.r_gc.r_pw.r_qf.&biw=134
1&bih=581&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=9tI8UKftBcPZrQflv4CAB
g Aug. 28, 2012)
Elbow joint movement is one directional (plate 22). It has a locking system that allows locking at a point. It is part of bending paradigm. It has characteristics similar to hinges. The bending of arm allows to extend the length or closing towards the body. In most cases we can extend our hand to 180 degree. However, the shoulder joints help us to oscillate in various directions because of ‘ball and socket’ joint mechanism. The joints of elbows and other hinges function differently because of the nature of the joints (plate 23A&B).
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Plate 23A Universal Joint |
23B Pin Joint |
23C Elbow Joints |
23D Machine Part Joints |
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