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Board Certified Hand Surgery, Torrance, CA |
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Thumb motion occurs at the trapeziometacarpal joint. This joint is located where the thumb metacarpal articulates with one of the wrist or carpal bones called the trapezium. The trapezium is shaped like a saddle which accounts for the great mobility of the trapeziometacarpal or TM joint. In this manner, the thumb can reach all of the fingertips with ease. This range of motion comes with a price however, since cartilage wear commonly occurs at this joint. Arthritis at the base of the thumb or trapeziometacarpal osteoarthritis is the most common site of osteoarthritis in the hand. It typically starts on the medial or inside of the trapezium (Figure 1 A), and then progresses to involve the metacarpal base on the other side of the joint (Figure 1 B). >> READ
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Two new Books for 2012! Current Reconstructive Surgery
The Art of Microsurgical Hand Reconstruction
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Journal Issue Guest Editor |
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The following videos contain graphic anatomical material
hence viewer discretion is advised.
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Copyright © 2008 David J. Slutsky M.D.
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