Thumb movements (Full Version)

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9999 -> Thumb movements (August 25, 2003 3:50:00 PM)

While all the movements of the body parts can be explained in different axis and planes effectively, there is somewhat confusion in explaining the movements of thumb, some people explain the movements of thumb are performed on an Oblique plane around an Oblique axis.

How this could be explained more efficiently or understandably? Any literature available in this matter?



Sam B -> Re: Thumb movements (September 4, 2003 5:33:00 PM)

Hi,

You'll find your answers in Kapandji: Physiology of the Joints ( your professors will know of this book; it is the biomechanics bible to some)It has great mechanical drawings that make the complex look simple.
The axis for flexion/ ext, abd/add etc is related to the anteromedial placement of the trapezium, to place the metacarpal joint in an optimal position for opposition.
This causes the oblique plane for the convex distal end of trapezius. The radial rotation of the metacarpal as an adjunct rotation is also important to note, as this is frequently a problem in patients with CMC problems and EPL tendonitis ( de Quervains)
Am happy to help with any questions you have.

Sam B



jma -> Re: Thumb movements (September 4, 2003 5:53:00 PM)

Hello,
You can also try and old classic, which has been updated. Look at:
Joint Structure and function: A comprehensive analysis, 3rd ed by Levangie and Norkin.

JMA



9999 -> Re: Thumb movements (September 18, 2003 6:49:00 AM)

Thank you jma and sam B

Yours
9999



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