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The axes of rotation of the thumb carpometacarpal joint
Author(s) -
Hollister Anne,
Buford William L.,
Myers Loyd M.,
Giurintano David J.,
Novick Andrew
Publication year - 1992
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.1100100319
Subject(s) - carpometacarpal joint , thumb , rotation (mathematics) , joint (building) , perpendicular , anatomy , orientation (vector space) , cadaver , orthodontics , geometry , geology , mathematics , medicine , structural engineering , engineering , osteoarthritis , alternative medicine , pathology
Two axes of rotation of the carpometacarpal (CMC) joint of seven cadaver thumbs were located using an axis finder. The flexion‐extension axis is located in the trapezium and the abduction‐adduction axis is in the first metacarpal. These axes are fixed, are not perpendicular to each other or to the bones, and do not intersect. Motion of the first metacarpal on the trapezium can be defined by these two axes. Understanding of the movements of the basal joint of the thumb is essential to the study of its function and reconstruction.